This document summarizes a study that uses computational fluid dynamics (CFD) simulation to analyze the heat transfer coefficient of a brake rotor disc under different groove patterns. The study first outlines the analytical calculations for determining key brake design parameters like braking force, minimum disc size, required actuating force, and material selection. It then describes the CFD methodology used, including assumptions, modeling of the quarter disc, initial and boundary conditions applied. The results show that providing grooves improves the heat transfer coefficient near the grooves, and increasing the number of grooves enhances heat dissipation. The 24-groove pattern yielded the highest coefficient of 234 W/m2K. In conclusion, CFD insight helps understand the effect of
Design, Analysis and Manufacturing of Braking system for an Universal Terrain...EditorIJAERD
The paper represents the designing, analyzing and fabrication of braking system as well as suspension
system for a Universal terrain vehicle that too being inside the constraints in the Rulebook provided by Rally Car Design
Challenge.
The main idea behind braking system is to design, analyze as well as to simulate the Hydraulic disc type of brakes
installed on a Universal Terrain Vehicle. An UTV as the name suggests is designed to handle a vast variety of terrain
than that of other conventional vehicles. The Braking system which is the most important constraint for handling has
undergone a substantial amount of development in the past. Thus, the topic is focused on designing a form of mentioned
braking system incorporating dynamics of the vehicle with providing optimum performance of the vehicle while
minimizing driver’s efforts.
Parameters like Dynamic weight transfer, Static weight distribution ratio, Pedal force, and etcetera were evaluated to
attain the desired performance. As an UTV has to be stopped or slowed down more often in rough terrains, ability of the
vehicle to stop efficiently and in adequate time becomes imperative. The calipers were selected by using required
calculations and chosen from the systems available in market, the calculations were then validated using CATIA. The
design of Brake Discs were decided using the required calculations and also the caliper mountings on SOLIDWORKS
and will be manufactured later. The component designs are analyzed in ANSYS and checked whether they are compatible
for our vehicle.
Engine Block/Cylinder Block is the structure which contains the cylinders, and other parts, of an internal combustion engine. In an early automotive engine, the engine block consisted of just the cylinder block, to which a separate crankcase was attached. Engine block is affected by pressure and the thermal conditions happen inside the engine. So we come up with static structural and transient thermal analysis on the engine block. This report provides Stress, Strain and Total Deformation of Engine due to Pressure, Temperature and Heat Flux. We come up with the fatigue life of the Engine Block due to different loading conditions.
A cylinder block is an integrated structure comprising the cylinder(s) of a reciprocating engine and often some or all of their associated surrounding structures. The term engine block is often used synonymously with "cylinder block" The analysis of the combustion chamber is done by using different materials. By conducting the above analysis on the combustion chamber combustion rate, pressure and temperature gradient conditions are found and the best material for the combustion chamber is suggested.
Thermal analysis is conducted to find heat dissipation rate in engine block with the variation of materials Structural and fatigue analysis (dynamic) is conduct on engine block at working load conditions to evaluate and compare stress, strain, deformation and fatigue life with the variation of materials.
Frequency analysis is conducted on engine block with the variation of materials to evaluate frequency, Using these values material selection will be done, the value should be nearby previous one (cast iron) maximum accepted variation value 65HZ.
In this paper three different cut patterns of brake disc are studied for heat transfer rate. Heat transfer rate increases with number of cuts in the disc. This is because large area is exposed to air which makes more heat transfer through conduction and convection. But increase in number and size of cuts decreases the strength of disc. And analysed thermally in ANSYS for different material and design created in CREO 3.0.
Design, Analysis and Manufacturing of Braking system for an Universal Terrain...EditorIJAERD
The paper represents the designing, analyzing and fabrication of braking system as well as suspension
system for a Universal terrain vehicle that too being inside the constraints in the Rulebook provided by Rally Car Design
Challenge.
The main idea behind braking system is to design, analyze as well as to simulate the Hydraulic disc type of brakes
installed on a Universal Terrain Vehicle. An UTV as the name suggests is designed to handle a vast variety of terrain
than that of other conventional vehicles. The Braking system which is the most important constraint for handling has
undergone a substantial amount of development in the past. Thus, the topic is focused on designing a form of mentioned
braking system incorporating dynamics of the vehicle with providing optimum performance of the vehicle while
minimizing driver’s efforts.
Parameters like Dynamic weight transfer, Static weight distribution ratio, Pedal force, and etcetera were evaluated to
attain the desired performance. As an UTV has to be stopped or slowed down more often in rough terrains, ability of the
vehicle to stop efficiently and in adequate time becomes imperative. The calipers were selected by using required
calculations and chosen from the systems available in market, the calculations were then validated using CATIA. The
design of Brake Discs were decided using the required calculations and also the caliper mountings on SOLIDWORKS
and will be manufactured later. The component designs are analyzed in ANSYS and checked whether they are compatible
for our vehicle.
Engine Block/Cylinder Block is the structure which contains the cylinders, and other parts, of an internal combustion engine. In an early automotive engine, the engine block consisted of just the cylinder block, to which a separate crankcase was attached. Engine block is affected by pressure and the thermal conditions happen inside the engine. So we come up with static structural and transient thermal analysis on the engine block. This report provides Stress, Strain and Total Deformation of Engine due to Pressure, Temperature and Heat Flux. We come up with the fatigue life of the Engine Block due to different loading conditions.
A cylinder block is an integrated structure comprising the cylinder(s) of a reciprocating engine and often some or all of their associated surrounding structures. The term engine block is often used synonymously with "cylinder block" The analysis of the combustion chamber is done by using different materials. By conducting the above analysis on the combustion chamber combustion rate, pressure and temperature gradient conditions are found and the best material for the combustion chamber is suggested.
Thermal analysis is conducted to find heat dissipation rate in engine block with the variation of materials Structural and fatigue analysis (dynamic) is conduct on engine block at working load conditions to evaluate and compare stress, strain, deformation and fatigue life with the variation of materials.
Frequency analysis is conducted on engine block with the variation of materials to evaluate frequency, Using these values material selection will be done, the value should be nearby previous one (cast iron) maximum accepted variation value 65HZ.
In this paper three different cut patterns of brake disc are studied for heat transfer rate. Heat transfer rate increases with number of cuts in the disc. This is because large area is exposed to air which makes more heat transfer through conduction and convection. But increase in number and size of cuts decreases the strength of disc. And analysed thermally in ANSYS for different material and design created in CREO 3.0.
WHY WE NEED TO DESIGN SEATS
FACTOR FOR SEAT DESIGN
GEOMETRIC FEATURES OF SEAT DESIGN
ERGONOMICS,SIMULATION AND MODELING
VIBRATION APPROACH
PRESSURE APPROACH
Analysis of Brake Biasing (Balance Bar) on Baja VehicleAditya Deshpande
Here, I have done analysis of braking system for All Terrain Vehicle for BAJA competition.
This was PPT Presentation for Seminar. The report of this is also uploaded on my SlideShre profile.
(https://www.slideshare.net/AdityaDeshpande50/analysis-of-brake-biasing-balance-bar-on-baja-atv-vehicle)
Contents:
Concept of brake biasing, need, various methods
Actual balance bar method: construction and working
Analysis using a case study: Determination of
Balance Bar Diameter, Pitch
Optimum Braking Force through Adhesion Graph
Maximum possible achievable deceleration at static condition for all wheels lockup
System Efficiency
Deceleration achieved vs speed
Conclusion and Comments
Thanks
Aditya Deshpande
deshadi805@gmail.com
Introduction : Basic Feature of an Automobile
Car Body Details
Types of Vehicle
Body Engineering Terminology
Morphology of Vehicle Body ( Structural ) Design
Design Considerations
Chassis is the main support structure of the vehicle which is also known as ‘Carrying Unit’. It bears all the stresses on the vehicle in both static and dynamic conditions.”
DESIGN AND ANALYSIS OF I.C. ENGINE PISTON AND PISTON-RING USING CATIA AND ANS...IAEME Publication
In this present work a piston and piston ring are designed for a single cylinder four stroke petrol engine using CATIA V5R20 software. Complete design is imported to ANSYS 14.5 software then analysis is performed. Three different materials have been selected for structural and thermal analysis of piston. For piston ring two different materials are selected and structural and thermal analysis is performed using ANSYS 14.5 software. Results are shown and a comparison is made to
find the most suited design.
Презентация "Листая страницы истории"
Автор - Меньшикова Дарья Александровна, ученица 11 класса Центральной сош №25 Перевальского района
Робота представлена на обласну генеалогічну експедицію "Слідами минулих поколінь", присвячену 75-ій річниці утворення Луганської області
Лауреат у номінації "Душі відроджені джерела"
WHY WE NEED TO DESIGN SEATS
FACTOR FOR SEAT DESIGN
GEOMETRIC FEATURES OF SEAT DESIGN
ERGONOMICS,SIMULATION AND MODELING
VIBRATION APPROACH
PRESSURE APPROACH
Analysis of Brake Biasing (Balance Bar) on Baja VehicleAditya Deshpande
Here, I have done analysis of braking system for All Terrain Vehicle for BAJA competition.
This was PPT Presentation for Seminar. The report of this is also uploaded on my SlideShre profile.
(https://www.slideshare.net/AdityaDeshpande50/analysis-of-brake-biasing-balance-bar-on-baja-atv-vehicle)
Contents:
Concept of brake biasing, need, various methods
Actual balance bar method: construction and working
Analysis using a case study: Determination of
Balance Bar Diameter, Pitch
Optimum Braking Force through Adhesion Graph
Maximum possible achievable deceleration at static condition for all wheels lockup
System Efficiency
Deceleration achieved vs speed
Conclusion and Comments
Thanks
Aditya Deshpande
deshadi805@gmail.com
Introduction : Basic Feature of an Automobile
Car Body Details
Types of Vehicle
Body Engineering Terminology
Morphology of Vehicle Body ( Structural ) Design
Design Considerations
Chassis is the main support structure of the vehicle which is also known as ‘Carrying Unit’. It bears all the stresses on the vehicle in both static and dynamic conditions.”
DESIGN AND ANALYSIS OF I.C. ENGINE PISTON AND PISTON-RING USING CATIA AND ANS...IAEME Publication
In this present work a piston and piston ring are designed for a single cylinder four stroke petrol engine using CATIA V5R20 software. Complete design is imported to ANSYS 14.5 software then analysis is performed. Three different materials have been selected for structural and thermal analysis of piston. For piston ring two different materials are selected and structural and thermal analysis is performed using ANSYS 14.5 software. Results are shown and a comparison is made to
find the most suited design.
Презентация "Листая страницы истории"
Автор - Меньшикова Дарья Александровна, ученица 11 класса Центральной сош №25 Перевальского района
Робота представлена на обласну генеалогічну експедицію "Слідами минулих поколінь", присвячену 75-ій річниці утворення Луганської області
Лауреат у номінації "Душі відроджені джерела"
STRUCTURAL AND THERMAL ANALYSIS OF DISC BRAKE USING SOLIDWORKS AND ANSYSIAEME Publication
Braking system represents one of the most fundamental safety critical components in modern vehicles. Brake absorbs kinetic energy of the rotating parts (Wheels) and the energy is dissipated in the form of heat energy to the surrounding atmosphere. It decelerates or stops the vehicle. When brake is applied to the disc brake it is subjected to high stress, thus it may suffer structural and wear issues. Hence for the better performance, structural, stress and the thermal analysis is preferred to choose low stress material.
Development of Software Using Matlab for Design Optimization of Brake for Min...iosrjce
Mini bikes are normally preferred by for their light weight. Hence attention needs to be focused on
weight while configuring each and every key element like brake, gear box,engine, clutchs etc. Design
optimization of brake for one such mini brake has been taken up in this work. To start with, mathematical model
of the brake has been established so as to bring out the relation between key parameters of the design and the
same has been used in the later stage so as to formulate the optimization strategy. Configuring the brake by
choosing restraining value of width of brake lining in place of choosing restraining value of size of brake drum
yielded to reduction of volume and hence weight. Optimized design lead to increased area of lining which in
turn will reduce dissipation of energy per unit area. Accordingly it has bagged additional merits like reduction
in operating temperature and wear. Further a general purpose software has been developed using MATLAB for
design optimization of brake. For accomplishing this, formulation has been transformed in form of a code in
MATLAB. Programme has been written with interactive mode of operation which means upon executing the
programme it prompts the user to enter the value of inputs and subsequently it generates the outputs.
Design, Analysis & Balancing of 5 Cylinder Engine CrankshaftIJMER
The crankshaft is a backbone of internal combustion engine. So the design & analysis is major
aspects to get high power transmission & efficiency. The selection of material is an important parameter
while designing any mechanical component. The material should be high strength & capacity to absorb
the shocks as well as fatigue. The material also have less wear tendency. The crankshaft should be high
torque transmitting capacity. So to achieve these objectives high carbon steel are used for design &
analysis purpose. This paper gives the idea about analysis as well as proper balancing of weights by using
these three materials. The modelling is done by using solid work software & then analysis by using ANSYS
software with Finite Element Analysis (FEA) method. The 5 cylinder engine gives the power stroke at 144
degree angle. By addition of counterweights & modified design these odd cylinders are balanced properly.
The Finite Element Analysis Method is used to determine stress, strains & deflection at most stressed point
which results into failure of shaft. Results obtained from analysis are used during weight optimization. The
Shaft is analyzed using static analysis. For absorbing vibrations proper damping material is used to
achieve the requirement of safe design. The optimization results into reduction of weight as well as cost
A Review Design of Effective Braking and Efficient Transmission Systemijtsrd
This paper focuses on the designing, simulation and fabrication of brake disc and a constant speed two stage reduction gearbox for an All Terrain Vehicle ATV . In our paper, we have presented an efficient gearbox and brake disc which is lightweight and long lasting. The drive train consists of Continuous Variable Transmission CVT and a constant mesh two stage reduction gearbox. The gearbox and disc brake were modeled on SOLIDWORKS version 2018 and analyzed on ANSYS mechanical workbench version 2016 and the result were found to be satisfactory. Shashwat Kulshreshtha | Shantanu Tiwari | Naman Varshney | Shikhar Verma | Mayank Kushwaha "A Review: Design of Effective Braking and Efficient Transmission System" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-4 , June 2020, URL: https://www.ijtsrd.com/papers/ijtsrd30969.pdf Paper Url :https://www.ijtsrd.com/engineering/mechanical-engineering/30969/a-review-design-of-effective-braking-and-efficient-transmission-system/shashwat-kulshreshtha
Structural and Thermal Analysis of a Single Plate Dry Friction Clutch Using F...dbpublications
B,
India
Abstract:
A clutch is a critical component of a
vehicle to transfer torque and speed from a driving
shaft to a driven shaft with the use of friction. The
efficiency of the clutch depends enormously on
friction that result in heat generation during
engagement and disengagement. Rapid heat
dissipation is primordial to prevent the friction
plate from reaching the fade temperature where
friction coefficient decreases. The present study is
an attempt to model and analyze structural
deformation, stress concentration, elastic strain,
thermal gradient and heat flux distribution of a
copper alloy friction lining and structural steel
friction lining of a clutch plate with the help of
finite elements methods software. It is observed
that copper alloy frictional lining of clutch plate
dissipates frictional heat at a faster rate than
structural steel frictional lining of clutch plate. The
design is done in Solidworks 2016 and the FEM
analysis is carried out using ANSYS 16.0 Transient
Structural and Steady State Thermal workb
In the modern day and age where automobiles are an essential part of our day to day life, the requirements of each are different. Some demand for a high-performance machine whereas others require a comfortable ride. The modern engineering helps in achieving all the aspects of a safe, reliable and fast vehicle. With the change in time, the need for an all-terrain vehicle has gradually increased. The research paper includes the optimisation of braking system for minimum stopping distance and locking all four tyres simultaneously. The SolidWorks struct-static analysis and simulation are done to obtain a better braking system which can provide the best in class arrangements for the customer. The research focused on disc, master cylinder position. The designs provide the sturdiness and durability which is the primary requirement for an all-terrain vehicle. The study comprises of braking for BAJA-ATV. The all-terrain conditions require active braking and all wheels locking at the instant time. The research paper includes the parameters for the efficient disc, callipers, master cylinder position for effective braking.
Similar to DETERMINATION OF HEAT TRANSFER COEFFICIENT OF BRAKE ROTOR DISC USING CFD SIMULATION (20)
Submission Deadline: 30th September 2022
Acceptance Notification: Within Three Days’ time period
Online Publication: Within 24 Hrs. time Period
Expected Date of Dispatch of Printed Journal: 5th October 2022
MODELING AND ANALYSIS OF SURFACE ROUGHNESS AND WHITE LATER THICKNESS IN WIRE-...IAEME Publication
White layer thickness (WLT) formed and surface roughness in wire electric discharge turning (WEDT) of tungsten carbide composite has been made to model through response surface methodology (RSM). A Taguchi’s standard Design of experiments involving five input variables with three levels has been employed to establish a mathematical model between input parameters and responses. Percentage of cobalt content, spindle speed, Pulse on-time, wire feed and pulse off-time were changed during the experimental tests based on the Taguchi’s orthogonal array L27 (3^13). Analysis of variance (ANOVA) revealed that the mathematical models obtained can adequately describe performance within the parameters of the factors considered. There was a good agreement between the experimental and predicted values in this study.
A STUDY ON THE REASONS FOR TRANSGENDER TO BECOME ENTREPRENEURSIAEME Publication
The study explores the reasons for a transgender to become entrepreneurs. In this study transgender entrepreneur was taken as independent variable and reasons to become as dependent variable. Data were collected through a structured questionnaire containing a five point Likert Scale. The study examined the data of 30 transgender entrepreneurs in Salem Municipal Corporation of Tamil Nadu State, India. Simple Random sampling technique was used. Garrett Ranking Technique (Percentile Position, Mean Scores) was used as the analysis for the present study to identify the top 13 stimulus factors for establishment of trans entrepreneurial venture. Economic advancement of a nation is governed upon the upshot of a resolute entrepreneurial doings. The conception of entrepreneurship has stretched and materialized to the socially deflated uncharted sections of transgender community. Presently transgenders have smashed their stereotypes and are making recent headlines of achievements in various fields of our Indian society. The trans-community is gradually being observed in a new light and has been trying to achieve prospective growth in entrepreneurship. The findings of the research revealed that the optimistic changes are taking place to change affirmative societal outlook of the transgender for entrepreneurial ventureship. It also laid emphasis on other transgenders to renovate their traditional living. The paper also highlights that legislators, supervisory body should endorse an impartial canons and reforms in Tamil Nadu Transgender Welfare Board Association.
BROAD UNEXPOSED SKILLS OF TRANSGENDER ENTREPRENEURSIAEME Publication
Since ages gender difference is always a debatable theme whether caused by nature, evolution or environment. The birth of a transgender is dreadful not only for the child but also for their parents. The pain of living in the wrong physique and treated as second class victimized citizen is outrageous and fully harboured with vicious baseless negative scruples. For so long, social exclusion had perpetuated inequality and deprivation experiencing ingrained malign stigma and besieged victims of crime or violence across their life spans. They are pushed into the murky way of life with a source of eternal disgust, bereft sexual potency and perennial fear. Although they are highly visible but very little is known about them. The common public needs to comprehend the ravaged arrogance on these insensitive souls and assist in integrating them into the mainstream by offering equal opportunity, treat with humanity and respect their dignity. Entrepreneurship in the current age is endorsing the gender fairness movement. Unstable careers and economic inadequacy had inclined one of the gender variant people called Transgender to become entrepreneurs. These tiny budding entrepreneurs resulted in economic transition by means of employment, free from the clutches of stereotype jobs, raised standard of living and handful of financial empowerment. Besides all these inhibitions, they were able to witness a platform for skill set development that ignited them to enter into entrepreneurial domain. This paper epitomizes skill sets involved in trans-entrepreneurs of Thoothukudi Municipal Corporation of Tamil Nadu State and is a groundbreaking determination to sightsee various skills incorporated and the impact on entrepreneurship.
DETERMINANTS AFFECTING THE USER'S INTENTION TO USE MOBILE BANKING APPLICATIONSIAEME Publication
The banking and financial services industries are experiencing increased technology penetration. Among them, the banking industry has made technological advancements to better serve the general populace. The economy focused on transforming the banking sector's system into a cashless, paperless, and faceless one. The researcher wants to evaluate the user's intention for utilising a mobile banking application. The study also examines the variables affecting the user's behaviour intention when selecting specific applications for financial transactions. The researcher employed a well-structured questionnaire and a descriptive study methodology to gather the respondents' primary data utilising the snowball sampling technique. The study includes variables like performance expectations, effort expectations, social impact, enabling circumstances, and perceived risk. Each of the aforementioned variables has a major impact on how users utilise mobile banking applications. The outcome will assist the service provider in comprehending the user's history with mobile banking applications.
ANALYSE THE USER PREDILECTION ON GPAY AND PHONEPE FOR DIGITAL TRANSACTIONSIAEME Publication
Technology upgradation in banking sector took the economy to view that payment mode towards online transactions using mobile applications. This system enabled connectivity between banks, Merchant and user in a convenient mode. there are various applications used for online transactions such as Google pay, Paytm, freecharge, mobikiwi, oxygen, phonepe and so on and it also includes mobile banking applications. The study aimed at evaluating the predilection of the user in adopting digital transaction. The study is descriptive in nature. The researcher used random sample techniques to collect the data. The findings reveal that mobile applications differ with the quality of service rendered by Gpay and Phonepe. The researcher suggest the Phonepe application should focus on implementing the application should be user friendly interface and Gpay on motivating the users to feel the importance of request for money and modes of payments in the application.
VOICE BASED ATM FOR VISUALLY IMPAIRED USING ARDUINOIAEME Publication
The prototype of a voice-based ATM for visually impaired using Arduino is to help people who are blind. This uses RFID cards which contain users fingerprint encrypted on it and interacts with the users through voice commands. ATM operates when sensor detects the presence of one person in the cabin. After scanning the RFID card, it will ask to select the mode like –normal or blind. User can select the respective mode through voice input, if blind mode is selected the balance check or cash withdraw can be done through voice input. Normal mode procedure is same as the existing ATM.
IMPACT OF EMOTIONAL INTELLIGENCE ON HUMAN RESOURCE MANAGEMENT PRACTICES AMONG...IAEME Publication
There is increasing acceptability of emotional intelligence as a major factor in personality assessment and effective human resource management. Emotional intelligence as the ability to build capacity, empathize, co-operate, motivate and develop others cannot be divorced from both effective performance and human resource management systems. The human person is crucial in defining organizational leadership and fortunes in terms of challenges and opportunities and walking across both multinational and bilateral relationships. The growing complexity of the business world requires a great deal of self-confidence, integrity, communication, conflict and diversity management to keep the global enterprise within the paths of productivity and sustainability. Using the exploratory research design and 255 participants the result of this original study indicates strong positive correlation between emotional intelligence and effective human resource management. The paper offers suggestions on further studies between emotional intelligence and human capital development and recommends for conflict management as an integral part of effective human resource management.
VISUALISING AGING PARENTS & THEIR CLOSE CARERS LIFE JOURNEY IN AGING ECONOMYIAEME Publication
Our life journey, in general, is closely defined by the way we understand the meaning of why we coexist and deal with its challenges. As we develop the "inspiration economy", we could say that nearly all of the challenges we have faced are opportunities that help us to discover the rest of our journey. In this note paper, we explore how being faced with the opportunity of being a close carer for an aging parent with dementia brought intangible discoveries that changed our insight of the meaning of the rest of our life journey.
A STUDY ON THE IMPACT OF ORGANIZATIONAL CULTURE ON THE EFFECTIVENESS OF PERFO...IAEME Publication
The main objective of this study is to analyze the impact of aspects of Organizational Culture on the Effectiveness of the Performance Management System (PMS) in the Health Care Organization at Thanjavur. Organizational Culture and PMS play a crucial role in present-day organizations in achieving their objectives. PMS needs employees’ cooperation to achieve its intended objectives. Employees' cooperation depends upon the organization’s culture. The present study uses exploratory research to examine the relationship between the Organization's culture and the Effectiveness of the Performance Management System. The study uses a Structured Questionnaire to collect the primary data. For this study, Thirty-six non-clinical employees were selected from twelve randomly selected Health Care organizations at Thanjavur. Thirty-two fully completed questionnaires were received.
Living in 21st century in itself reminds all of us the necessity of police and its administration. As more and more we are entering into the modern society and culture, the more we require the services of the so called ‘Khaki Worthy’ men i.e., the police personnel. Whether we talk of Indian police or the other nation’s police, they all have the same recognition as they have in India. But as already mentioned, their services and requirements are different after the like 26th November, 2008 incidents, where they without saving their own lives has sacrificed themselves without any hitch and without caring about their respective family members and wards. In other words, they are like our heroes and mentors who can guide us from the darkness of fear, militancy, corruption and other dark sides of life and so on. Now the question arises, if Gandhi would have been alive today, what would have been his reaction/opinion to the police and its functioning? Would he have some thing different in his mind now what he had been in his mind before the partition or would he be going to start some Satyagraha in the form of some improvement in the functioning of the police administration? Really these questions or rather night mares can come to any one’s mind, when there is too much confusion is prevailing in our minds, when there is too much corruption in the society and when the polices working is also in the questioning because of one or the other case throughout the India. It is matter of great concern that we have to thing over our administration and our practical approach because the police personals are also like us, they are part and parcel of our society and among one of us, so why we all are pin pointing towards them.
A STUDY ON TALENT MANAGEMENT AND ITS IMPACT ON EMPLOYEE RETENTION IN SELECTED...IAEME Publication
The goal of this study was to see how talent management affected employee retention in the selected IT organizations in Chennai. The fundamental issue was the difficulty to attract, hire, and retain talented personnel who perform well and the gap between supply and demand of talent acquisition and retaining them within the firms. The study's main goals were to determine the impact of talent management on employee retention in IT companies in Chennai, investigate talent management strategies that IT companies could use to improve talent acquisition, performance management, career planning and formulate retention strategies that the IT firms could use. The respondents were given a structured close-ended questionnaire with the 5 Point Likert Scale as part of the study's quantitative research design. The target population consisted of 289 IT professionals. The questionnaires were distributed and collected by the researcher directly. The Statistical Package for Social Sciences (SPSS) was used to collect and analyse the questionnaire responses. Hypotheses that were formulated for the various areas of the study were tested using a variety of statistical tests. The key findings of the study suggested that talent management had an impact on employee retention. The studies also found that there is a clear link between the implementation of talent management and retention measures. Management should provide enough training and development for employees, clarify job responsibilities, provide adequate remuneration packages, and recognise employees for exceptional performance.
ATTRITION IN THE IT INDUSTRY DURING COVID-19 PANDEMIC: LINKING EMOTIONAL INTE...IAEME Publication
Globally, Millions of dollars were spent by the organizations for employing skilled Information Technology (IT) professionals. It is costly to replace unskilled employees with IT professionals possessing technical skills and competencies that aid in interconnecting the business processes. The organization’s employment tactics were forced to alter by globalization along with technological innovations as they consistently diminish to remain lean, outsource to concentrate on core competencies along with restructuring/reallocate personnel to gather efficiency. As other jobs, organizations or professions have become reasonably more appropriate in a shifting employment landscape, the above alterations trigger both involuntary as well as voluntary turnover. The employee view on jobs is also afflicted by the COVID-19 pandemic along with the employee-driven labour market. So, having effective strategies is necessary to tackle the withdrawal rate of employees. By associating Emotional Intelligence (EI) along with Talent Management (TM) in the IT industry, the rise in attrition rate was analyzed in this study. Only 303 respondents were collected out of 350 participants to whom questionnaires were distributed. From the employees of IT organizations located in Bangalore (India), the data were congregated. A simple random sampling methodology was employed to congregate data as of the respondents. Generating the hypothesis along with testing is eventuated. The effect of EI and TM along with regression analysis between TM and EI was analyzed. The outcomes indicated that employee and Organizational Performance (OP) were elevated by effective EI along with TM.
INFLUENCE OF TALENT MANAGEMENT PRACTICES ON ORGANIZATIONAL PERFORMANCE A STUD...IAEME Publication
By implementing talent management strategy, organizations would have the option to retain their skilled professionals while additionally working on their overall performance. It is the course of appropriately utilizing the ideal individuals, setting them up for future top positions, exploring and dealing with their performance, and holding them back from leaving the organization. It is employee performance that determines the success of every organization. The firm quickly obtains an upper hand over its rivals in the event that its employees having particular skills that cannot be duplicated by the competitors. Thus, firms are centred on creating successful talent management practices and processes to deal with the unique human resources. Firms are additionally endeavouring to keep their top/key staff since on the off chance that they leave; the whole store of information leaves the firm's hands. The study's objective was to determine the impact of talent management on organizational performance among the selected IT organizations in Chennai. The study recommends that talent management limitedly affects performance. On the off chance that this talent is appropriately management and implemented properly, organizations might benefit as much as possible from their maintained assets to support development and productivity, both monetarily and non-monetarily.
A STUDY OF VARIOUS TYPES OF LOANS OF SELECTED PUBLIC AND PRIVATE SECTOR BANKS...IAEME Publication
Banking regulations act of India, 1949 defines banking as “acceptance of deposits for the purpose of lending or investment from the public, repayment on demand or otherwise and withdrawable through cheques, drafts order or otherwise”, the major participants of the Indian financial system are commercial banks, the financial institution encompassing term lending institutions. Investments institutions, specialized financial institution and the state level development banks, non banking financial companies (NBFC) and other market intermediaries such has the stock brokers and money lenders are among the oldest of the certain variants of NBFC and the oldest market participants. The asset quality of banks is one of the most important indicators of their financial health. The Indian banking sector has been facing severe problems of increasing Non- Performing Assets (NPAs). The NPAs growth directly and indirectly affects the quality of assets and profitability of banks. It also shows the efficiency of banks credit risk management and the recovery effectiveness. NPA do not generate any income, whereas, the bank is required to make provisions for such as assets that why is a double edge weapon. This paper outlines the concept of quality of bank loans of different types like Housing, Agriculture and MSME loans in state Haryana of selected public and private sector banks. This study is highlighting problems associated with the role of commercial bank in financing Small and Medium Scale Enterprises (SME). The overall objective of the research was to assess the effect of the financing provisions existing for the setting up and operations of MSMEs in the country and to generate recommendations for more robust financing mechanisms for successful operation of the MSMEs, in turn understanding the impact of MSME loans on financial institutions due to NPA. There are many research conducted on the topic of Non- Performing Assets (NPA) Management, concerning particular bank, comparative study of public and private banks etc. In this paper the researcher is considering the aggregate data of selected public sector and private sector banks and attempts to compare the NPA of Housing, Agriculture and MSME loans in state Haryana of public and private sector banks. The tools used in the study are average and Anova test and variance. The findings reveal that NPA is common problem for both public and private sector banks and is associated with all types of loans either that is housing loans, agriculture loans and loans to SMES. NPAs of both public and private sector banks show the increasing trend. In 2010-11 GNPA of public and private sector were at same level it was 2% but after 2010-11 it increased in many fold and at present there is GNPA in some more than 15%. It shows the dark area of Indian banking sector.
EXPERIMENTAL STUDY OF MECHANICAL AND TRIBOLOGICAL RELATION OF NYLON/BaSO4 POL...IAEME Publication
An experiment conducted in this study found that BaSO4 changed Nylon 6's mechanical properties. By changing the weight ratios, BaSO4 was used to make Nylon 6. This Researcher looked into how hard Nylon-6/BaSO4 composites are and how well they wear. Experiments were done based on Taguchi design L9. Nylon-6/BaSO4 composites can be tested for their hardness number using a Rockwell hardness testing apparatus. On Nylon/BaSO4, the wear behavior was measured by a wear monitor, pinon-disc friction by varying reinforcement, sliding speed, and sliding distance, and the microstructure of the crack surfaces was observed by SEM. This study provides significant contributions to ultimate strength by increasing BaSO4 content up to 16% in the composites, and sliding speed contributes 72.45% to the wear rate
ROLE OF SOCIAL ENTREPRENEURSHIP IN RURAL DEVELOPMENT OF INDIA - PROBLEMS AND ...IAEME Publication
The majority of the population in India lives in villages. The village is the back bone of the country. Village or rural industries play an important role in the national economy, particularly in the rural development. Developing the rural economy is one of the key indicators towards a country’s success. Whether it be the need to look after the welfare of the farmers or invest in rural infrastructure, Governments have to ensure that rural development isn’t compromised. The economic development of our country largely depends on the progress of rural areas and the standard of living of rural masses. Village or rural industries play an important role in the national economy, particularly in the rural development. Rural entrepreneurship is based on stimulating local entrepreneurial talent and the subsequent growth of indigenous enterprises. It recognizes opportunity in the rural areas and accelerates a unique blend of resources either inside or outside of agriculture. Rural entrepreneurship brings an economic value to the rural sector by creating new methods of production, new markets, new products and generate employment opportunities thereby ensuring continuous rural development. Social Entrepreneurship has the direct and primary objective of serving the society along with the earning profits. So, social entrepreneurship is different from the economic entrepreneurship as its basic objective is not to earn profits but for providing innovative solutions to meet the society needs which are not taken care by majority of the entrepreneurs as they are in the business for profit making as a sole objective. So, the Social Entrepreneurs have the huge growth potential particularly in the developing countries like India where we have huge societal disparities in terms of the financial positions of the population. Still 22 percent of the Indian population is below the poverty line and also there is disparity among the rural & urban population in terms of families living under BPL. 25.7 percent of the rural population & 13.7 percent of the urban population is under BPL which clearly shows the disparity of the poor people in the rural and urban areas. The need to develop social entrepreneurship in agriculture is dictated by a large number of social problems. Such problems include low living standards, unemployment, and social tension. The reasons that led to the emergence of the practice of social entrepreneurship are the above factors. The research problem lays upon disclosing the importance of role of social entrepreneurship in rural development of India. The paper the tendencies of social entrepreneurship in India, to present successful examples of such business for providing recommendations how to improve situation in rural areas in terms of social entrepreneurship development. Indian government has made some steps towards development of social enterprises, social entrepreneurship, and social in- novation, but a lot remains to be improved.
OPTIMAL RECONFIGURATION OF POWER DISTRIBUTION RADIAL NETWORK USING HYBRID MET...IAEME Publication
Distribution system is a critical link between the electric power distributor and the consumers. Most of the distribution networks commonly used by the electric utility is the radial distribution network. However in this type of network, it has technical issues such as enormous power losses which affect the quality of the supply. Nowadays, the introduction of Distributed Generation (DG) units in the system help improve and support the voltage profile of the network as well as the performance of the system components through power loss mitigation. In this study network reconfiguration was done using two meta-heuristic algorithms Particle Swarm Optimization and Gravitational Search Algorithm (PSO-GSA) to enhance power quality and voltage profile in the system when simultaneously applied with the DG units. Backward/Forward Sweep Method was used in the load flow analysis and simulated using the MATLAB program. Five cases were considered in the Reconfiguration based on the contribution of DG units. The proposed method was tested using IEEE 33 bus system. Based on the results, there was a voltage profile improvement in the system from 0.9038 p.u. to 0.9594 p.u.. The integration of DG in the network also reduced power losses from 210.98 kW to 69.3963 kW. Simulated results are drawn to show the performance of each case.
APPLICATION OF FRUGAL APPROACH FOR PRODUCTIVITY IMPROVEMENT - A CASE STUDY OF...IAEME Publication
Manufacturing industries have witnessed an outburst in productivity. For productivity improvement manufacturing industries are taking various initiatives by using lean tools and techniques. However, in different manufacturing industries, frugal approach is applied in product design and services as a tool for improvement. Frugal approach contributed to prove less is more and seems indirectly contributing to improve productivity. Hence, there is need to understand status of frugal approach application in manufacturing industries. All manufacturing industries are trying hard and putting continuous efforts for competitive existence. For productivity improvements, manufacturing industries are coming up with different effective and efficient solutions in manufacturing processes and operations. To overcome current challenges, manufacturing industries have started using frugal approach in product design and services. For this study, methodology adopted with both primary and secondary sources of data. For primary source interview and observation technique is used and for secondary source review has done based on available literatures in website, printed magazines, manual etc. An attempt has made for understanding application of frugal approach with the study of manufacturing industry project. Manufacturing industry selected for this project study is Mahindra and Mahindra Ltd. This paper will help researcher to find the connections between the two concepts productivity improvement and frugal approach. This paper will help to understand significance of frugal approach for productivity improvement in manufacturing industry. This will also help to understand current scenario of frugal approach in manufacturing industry. In manufacturing industries various process are involved to deliver the final product. In the process of converting input in to output through manufacturing process productivity plays very critical role. Hence this study will help to evolve status of frugal approach in productivity improvement programme. The notion of frugal can be viewed as an approach towards productivity improvement in manufacturing industries.
A MULTIPLE – CHANNEL QUEUING MODELS ON FUZZY ENVIRONMENTIAEME Publication
In this paper, we investigated a queuing model of fuzzy environment-based a multiple channel queuing model (M/M/C) ( /FCFS) and study its performance under realistic conditions. It applies a nonagonal fuzzy number to analyse the relevant performance of a multiple channel queuing model (M/M/C) ( /FCFS). Based on the sub interval average ranking method for nonagonal fuzzy number, we convert fuzzy number to crisp one. Numerical results reveal that the efficiency of this method. Intuitively, the fuzzy environment adapts well to a multiple channel queuing models (M/M/C) ( /FCFS) are very well.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
Contact with Dawood Bhai Just call on +92322-6382012 and we'll help you. We'll solve all your problems within 12 to 24 hours and with 101% guarantee and with astrology systematic. If you want to take any personal or professional advice then also you can call us on +92322-6382012 , ONLINE LOVE PROBLEM & Other all types of Daily Life Problem's.Then CALL or WHATSAPP us on +92322-6382012 and Get all these problems solutions here by Amil Baba DAWOOD BANGALI
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COLLEGE BUS MANAGEMENT SYSTEM PROJECT REPORT.pdfKamal Acharya
The College Bus Management system is completely developed by Visual Basic .NET Version. The application is connect with most secured database language MS SQL Server. The application is develop by using best combination of front-end and back-end languages. The application is totally design like flat user interface. This flat user interface is more attractive user interface in 2017. The application is gives more important to the system functionality. The application is to manage the student’s details, driver’s details, bus details, bus route details, bus fees details and more. The application has only one unit for admin. The admin can manage the entire application. The admin can login into the application by using username and password of the admin. The application is develop for big and small colleges. It is more user friendly for non-computer person. Even they can easily learn how to manage the application within hours. The application is more secure by the admin. The system will give an effective output for the VB.Net and SQL Server given as input to the system. The compiled java program given as input to the system, after scanning the program will generate different reports. The application generates the report for users. The admin can view and download the report of the data. The application deliver the excel format reports. Because, excel formatted reports is very easy to understand the income and expense of the college bus. This application is mainly develop for windows operating system users. In 2017, 73% of people enterprises are using windows operating system. So the application will easily install for all the windows operating system users. The application-developed size is very low. The application consumes very low space in disk. Therefore, the user can allocate very minimum local disk space for this application.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
This keynote talks about the democratization of fuzzing at scale, highlighting the collaboration between open source communities, academia, and industry to advance the field of fuzzing. It delves into the history of fuzzing, the development of scalable fuzzing platforms, and the empowerment of community-driven research. The talk will further discuss recent advancements leveraging AI/ML and offer insights into the future evolution of the fuzzing landscape.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
TECHNICAL TRAINING MANUAL GENERAL FAMILIARIZATION COURSEDuvanRamosGarzon1
AIRCRAFT GENERAL
The Single Aisle is the most advanced family aircraft in service today, with fly-by-wire flight controls.
The A318, A319, A320 and A321 are twin-engine subsonic medium range aircraft.
The family offers a choice of engines
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the pressure applied between the two objects, the type of materials in contact & the
smoothness of their rubbing surfaces. Friction converts the kinetic energy into heat.
The greater the pressure applied to the objects, the more friction & heat produced, &
the sooner the vehicle is brought to a stop [1].
Belhocine Ali and Bouchetara Mostefa (2013) [3], analyzed the thermo
mechanical behavior of the dry contact between the brake disc and pads during the
braking phase. The thermal-structural analyze is then used to determine the
deformation and the Von Mises stress established in the disc, the contact pressure
distribution in pads.
D. Murali Mohan Rao, Dr. C. L. V. R. S. V. Prasad, T. Ramakrishna (2013) [4],
studied that the frictional heat generated during braking application can cause
numerous negative effects on the brake assembly such as brake fade, premature wear,
thermal cracks and Disc Thickness Variation (DTV). He stated that numerical
simulation for the coupled transient thermal field and stress field is carried out
sequentially by thermal-structural coupled method based on ANSYS to evaluate the
stress fields and of deformations which are established in the disc which is another
significant. He compared the results obtained by the simulation with those of the
specialized literature.
Behnam Ghadimi, Fars Kowsary and M.Khorami (2012) [5], investigated the
thermal analysis of the wheel-mounted brake disc R920K for the ER24PC
locomotive. The brake disc and fluid zone were simulated as a 3D model with a
thermal coupling boundary condition. The braking process was simulated in
laboratory and the experimental data was used to verify the simulation results. During
the braking, he observed that the maximum temperature is in the middle of braking
process instead of the braking end point. Moreover, a large lagging was observed for
fins temperature which renders no cooling at the beginning of the braking
2. DESIGN PARAMETERS AND CALCULATIONS
The calculation and verification of braking force is a crucial step in the design process
of an automobile as the braking system directly factors as a good control and safety
feature in the product. While designing, the main objective is to generate more
braking force than ideally required to account for inefficiencies in mechanical
linkages and hydraulic systems.
Considering an off-road vehicle, the maximum coefficient of friction between tire
and road is 0.7 [1]. The maximum possible deceleration without wheel lockup is thus
limited to the 0.7G. Stopping distance for a vehicle should be as minimum as possible
without affecting the driver control. The stopping distance depends on the velocity at
which vehicle is moving and the maximum possible deceleration.
2.1. Braking Force (Fb)
The braking force is directly proportional to the maximum possible deceleration and
the gross weight of the vehicle. The braking force equation can be given as [1]:
2.2. Braking Force on Single Wheel (Fb1)
Dynamic weight transfer in wheeled vehicles is the measurable change of load borne
by different wheels during acceleration (both longitudinal and lateral). This includes
braking, and deceleration. No motion of the center of mass relative to the wheels is
3. Sanket Kothawade, Aditya Patankar, Rohit Kulkarni and Sameer Ingale
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necessary. Hence, the braking force on single wheel is directly proportional to the
dynamic weight transfer and the total braking force divided by two since in a four
wheel vehicle there are two discs each at the front wheels [1].
2.3. Minimum Size of Disc:
The minimum size of disc is calculated by using the following relation [1]:
)
Where Am and Aw are area of master cylinder and caliper cylinders respectively,
Table 1 Initial Design Parameters
NO Parameter Value
1 Gross weight of Vehicle 220 kg
2 Dynamic weight transfer on front 0.65
3 Diameter of master cylinder (dm) 19 mm
4 Diameter of caliper cylinder (dw) 28 mm
5 Mechanical leverage (Rp) 4
6 Force exerted on pedal (f) 300N
Substituting the initial design parameters in the above relations, we get
Table 2 Calculated Design Parameters
NO Parameter Value
1 Braking force (Fb) 1510.74 N
2 Braking force on front wheel (Fb1) 491 N
3 Area of master cylinder (Am) 283.5 mm2
4 Area of caliper cylinder (Aw) 981.7 mm2
5 Minimum outer radius of disc (r) 41.88mm
Further, it is necessary to determine and decide the inner and outer diameter of the
rotor disc. The inner and outer diameter of the rotor disc depends on the minimum
swept area required for applying brakes and the dimensions of the brake pad. It also
depends on the assembly constraints of the wheel assembly.
Considering the case of a vehicle having following assembly specifications:
Diameter of the wheel = 22”
4. Determination of Heat Transfer Coefficient of Brake Rotor Disc using CFD Simulation
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For the above specifications and calculated values the rotor dimensions selected
are as follows.
Outer diameter of disc (Do) = 160 mm
Inner diameter of disc (Di) = 110 mm
2.4. Required Actuating Force:
Actuating force required to be generated by the brake caliper is the brake force on the
single assembly divide by the coefficient of friction between brake pad and disc [1].
Wbraked = 491/0.4
Wbraked = 1227.5 N
As the force is exerted by both the brake pads,
Wbraked = 2455 N
2.5. Rotor Material
Stainless steel although a little more expensive has a lot more positives. It doesn’t
rust, or at least not to any great extent. It is very robust; it is tolerant to almost all
brake pads and particularly to sintered brake pads. It is highly resistant to wear, it
doesn’t shatter and it resists heat very well. Hence the material selected for disc is
SS410.
Table 3 Properties of SS410
NO Parameter Value
1 Density 7.845 g/cc
2 Tensile Strength 1475 MPa
3 Yield Strength 1005 MPa
4 Thermal Conductivity 24.9 W/ m-K
5 Coefficient of Thermal Expansion 9.9 μm/m/°C
6 Specific Heat Capacity 460 J/ Kg-k
3. HEAT TRANSFER COEFFICIENTS
It is used in calculating the heat transfer, typically by convection or phase transition
between a fluid and a solid. The heat transfer coefficient has SI units in watts per
square meter Kelvin: W/ (m2K).
3.1. Analytical Calculations
Since the forced convection takes place on the contact surface during every rotation of
a disc (out of pad area on the rubbing path) as well as on the cylindrical external and
internal surface. The convective heat transfer coefficient h is of the form [1]:
Where Reynolds number is given by Re
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ρ = Density of Material.
v = velocity of air
When Re > 2.4 * 105 the convective heat transfer coefficient h is of the form,
Ka = Thermal conductivity of air
Do = Outer diameter of disc
3.2. Numerical Analysis
The finite volume commercial CFD software fluent version 15 is used for analysis.
This commercial CFD tool is widely used in the numerical simulation of different
flow conditions with various complexities. It is chosen in this study because of its
proven capability in flows similar to those investigated here. In present simulation the
flow fields are calculated by solving the Realizable k-" turbulence model. This
involves splitting the geometry into many sub volumes and then integrating the
differential equations over these volumes to produce a set of coupled algebraic
equations for the velocity components, and pressure at the centroid of each volume.
The solver guesses the pressure field and then solves the discretized form of
momentum equations to find new values of the pressure and velocity components.
This process carries on, in an iterative manner, until the convergence criterion is
satisfied. Following methodology is used for CFD analysis
Figure 1 Methodology for CFD Simulation
3.2.1. Assumptions made for CFD analysis
The assumptions made for CFD analysis are as follows.
1. The flow medium is air.
2. Flow is steady and turbulent.
3. Properties of air are taken at standard temperature pressure conditions.
4. 90% of frictional heat transferred to disc.
5. Heat Flux is uniform over pad area.
6. Radiation effects are neglected.
7. Constant properties (density, Conductivity, specific heat, and viscosity)
• Geometric modeling
• Grid Generation
Preprocessing
• Initial Condition and Boundary
Condition
• Selection of Flow models
Solver
• Contour PlotsPost-Processing
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3.2.3. Modeling of brake disc for CFD simulation
A quarter disc models are created for CFD simulation. As the disc is symmetric
about both the axis the quarter disc model provides reasonably correct solution with
decrease in the solver time. The enclosure was made around the quarter model taking
into consideration that it may not affect the solution. Hence, the grid was sufficient
large. The disc cross section does not change along its thickness. Hence, disc was
modeled with half thickness. Symmetry boundary condition was used across the
thickness so the grid size was reduced to half. At the interface of the disc and
surrounding air boundary layer is generated by means of Prisms. Fine mesh is
obtained by use of proximity and curvature.
Figure 2 Grid Generation
Figure 3 Boundary Layer Generations at Interface
3.2.4. Initial conditions
Considering the standard ambient conditions for temperature as
T (x, y, z) = 27°C at time t = 0
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3.2.5. Boundary conditions
In a braking system, the mechanical energy is transformed into a calorific energy.
This energy is characterized by a total heating of the disc and pads during the braking
phase. The heat quantity in the contact area is the result of plastic micro deformations
generated by the friction forces. Generally, the thermal conductivity of material of the
brake pads is smaller than of the disc. We consider that the heat quantity produced
will be completely absorbed by the brake disc. The heat flux evacuated of this surface
is equal to the power friction. The initial heat flux entering the disc is calculated by
the following formula [2]:
q = 36504 W/m2
Inlet velocity (v) = 8.33 m/s
Heat flux into disc surface = 36504 W/m2
4. RESULTS AND DISCUSSIONS
Figure 4 Contour Plots for Disc with 4 Grooves
Figure 5 Contour Plots for Disc with 8 Grooves
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Figure 6 Contour Plots for Disc with 16 Grooves
Figure 7 Contour Plots for Disc with 24 Grooves
Table 4 Variation of Heat Transfer Coefficient
Disc with 4 grooves 182 W/m2
K
Disc with 8 grooves 187 W/m2
K
Disc with 16 grooves 187 W/m2
K
Disc with 24 grooves 234 W/m2
K
The above results show that with the provision of grooves improves the heat
transfer coefficient at the vicinity of the grooves. Hence, further increasing the
number of the grooves enhances the heat dissipation rate. Further, provision of petals
over the outer edge of the disc increase the surface area as well improves the heat
transfer coefficient.
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5. CONCLUSION
The following comments could be concluded:-
1. CFD simulation provides an insight to flow physics at vicinity at effect of the grooves
on the heat transfer coefficient
2. Due to provision of grooves there is considerable increase in heat transfer coefficient
at vicinity of grooves, increased heat transfer coefficient increases the heat dissipation
rate.
3. The analytical solution of heat transfer coefficient and Numerical Solution are Close,
the difference in the values is due to provision of grooves which is not taken into
consideration while analytical calculation.
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