International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Computational Analysis of Natural Convection in Spherical Annulus Using FEVIJMER
HEAT transfer by natural convection from a body to its finite enclosure is of importance
in nuclear reactor technology, electronic instrumentation packaging, aircraft cabin design, the
analysis of fluid suspension gyrocompasses, and numerous other practical situations. The steady
natural convection heat transfer of fluids between two concentric isothermal spheres is investigated
computationally with the help of FEV in ANSYS 14.5. The inner wall is subjected to a higher
temperature and outer is at room temperature. The steady behavior of the flow field and its
subsequent effect on the temperature distribution for different Rayleigh numbers and radius ratios
are analyzed.
Bossious boundary condition is taken for natural convection and which is solved in fluent
module. Steady solutions of the entire flow field is obtained for Rayleigh number (5x101<ra><105),><rr><3). The result shows that the Rayleigh number and
radius ratio have a profound influence on the temperature and flow fields and Prandlt number has
very negligible effect. The results of average Nusselt numbers are also compared with those of
previous numerical investigations. Excellent agreement is obtained.
HEAT TRANSFER ENHANCEMENT BY USING NANOFLUID JET IMPINGEMENTijiert bestjournal
An experimental investigation was carried out for s tudying the heat transfer performance of the water-Al2O3 (28nm average particle size) nanofluid inside a liquid evacuated impinging jet system dest ined to the cooling of circular target surface. Results have shown that th e surface heat transfer coefficient increases consi derably when the mass flow rate is increased,but is relatively insensitive to the nozzle-to heated-surface distance. It was foun d that the use of a nanofluid can provide a heat transfer enhancement when compared t o water. Thus most practical applications of jet im pingement occur in industries where the heat transfer requirements hav e exceeded capacity of ordinary heating and cooling techniques. This work presents and discusses the results of an experiment al investigation of heat transfer between the horiz ontal smooth plate of impinged jets.
NUMERICAL INVESTIGATION OF NATURAL CONVECTION HEAT TRANSFER FROM CIRCULAR CYL...IAEME Publication
In the present work, the enhancement of natural convection heat transfer utilizing nano fluids as working fluid from horizontal circular cylinder situated in a square enclosure is investigated numerically. Different types of nano particles were tested. The types of the nano fluids are Cu, Al2O3 and TiO3 with water as base fluid. A model is developed to analyze heat transfer performance of nano fluids inside an enclosure taking into account the solid particle dispersionrs on the flow and heat
transfer characteristics.
Computational Analysis of Natural Convection in Spherical Annulus Using FEVIJMER
HEAT transfer by natural convection from a body to its finite enclosure is of importance
in nuclear reactor technology, electronic instrumentation packaging, aircraft cabin design, the
analysis of fluid suspension gyrocompasses, and numerous other practical situations. The steady
natural convection heat transfer of fluids between two concentric isothermal spheres is investigated
computationally with the help of FEV in ANSYS 14.5. The inner wall is subjected to a higher
temperature and outer is at room temperature. The steady behavior of the flow field and its
subsequent effect on the temperature distribution for different Rayleigh numbers and radius ratios
are analyzed.
Bossious boundary condition is taken for natural convection and which is solved in fluent
module. Steady solutions of the entire flow field is obtained for Rayleigh number (5x101<ra><105),><rr><3). The result shows that the Rayleigh number and
radius ratio have a profound influence on the temperature and flow fields and Prandlt number has
very negligible effect. The results of average Nusselt numbers are also compared with those of
previous numerical investigations. Excellent agreement is obtained.
HEAT TRANSFER ENHANCEMENT BY USING NANOFLUID JET IMPINGEMENTijiert bestjournal
An experimental investigation was carried out for s tudying the heat transfer performance of the water-Al2O3 (28nm average particle size) nanofluid inside a liquid evacuated impinging jet system dest ined to the cooling of circular target surface. Results have shown that th e surface heat transfer coefficient increases consi derably when the mass flow rate is increased,but is relatively insensitive to the nozzle-to heated-surface distance. It was foun d that the use of a nanofluid can provide a heat transfer enhancement when compared t o water. Thus most practical applications of jet im pingement occur in industries where the heat transfer requirements hav e exceeded capacity of ordinary heating and cooling techniques. This work presents and discusses the results of an experiment al investigation of heat transfer between the horiz ontal smooth plate of impinged jets.
NUMERICAL INVESTIGATION OF NATURAL CONVECTION HEAT TRANSFER FROM CIRCULAR CYL...IAEME Publication
In the present work, the enhancement of natural convection heat transfer utilizing nano fluids as working fluid from horizontal circular cylinder situated in a square enclosure is investigated numerically. Different types of nano particles were tested. The types of the nano fluids are Cu, Al2O3 and TiO3 with water as base fluid. A model is developed to analyze heat transfer performance of nano fluids inside an enclosure taking into account the solid particle dispersionrs on the flow and heat
transfer characteristics.
NUMERICAL INVESTIGATION OF AN UNSTEADY MIXED CONVECTIVE MASS AND HEAT TRANSFE...IAEME Publication
In the present paper an analysis of mixed convection of an unsteady magneto hydrodynamic (MHD) flow of an incompressible viscous fluid through porous media due to a vertical porous stretching sheet in the presence of viscous dissipation, thermal radiation and heat source /sink has been carried out. The fluid considered is viscous and incompressible. The governing partial differential equations of the flow, mass and heat transfer are highly non linear hence are converted into a system of ordinary differential equations using suitable similarity transformations. These ordinary differential equations are further converted into 7 first order ordinary differential equations and are solved numerically by Matlab ode-45 solver via shooting method.
Energy crisis is one of the most important problems
the world is facing now-a-days. With the increase of cost of
electrical energy operating cost of cold storage storing is
increasing which forces the increased cost price of the
commodities that are kept. In this situation if the maximum
heat energy(Q) is absorbed by the evaporator inside the cold
room through convective heat transfer process in terms of –
heat transfer due to convection and heat transfer due to
condensation, more energy has to be wasted to maintain the
evaporator space at the desired temperature range of 2- 8
degree centigrade. In this paper we have proposed a theoretical
heat transfer model of convective heat transfer in cold storage
using Taguchi L9 orthogonal array. Velocity of air (V),
Temperature difference (dT), Relative Humidity (RH) are the
basic variable and three ranges are taken each of them in the
model development. Graphical interpretations from the model
justify the reality through anova and s/n ratio calculation.
Climatology Applied To Architecture: An Experimental Investigation about Inte...IJERA Editor
Data were analyzed en relative spatial distribution of the internal surface temperature (IST) and internal air
temperature or dry bulb (TBS), in two different test cells, for a typical experimental day under the influence of
tropical mass. The main goal of this research is to provide guidelines to collect temperature data experimentally
since there is not an appropriate standard to guide this methodological procedure in buildings. The data series of
dry bulb temperature and internal surface temperatures were measured in a test cell with a green roof and the
other with conventional ceramic roof by thermocouples installed at predetermined locations. The data of solar
radiation and the main climatic variables were recorded by the automatic weather station at the Center of Science
Engineering Applied to the Environment (CCEAMA), School of Engineering of São Carlos (EESC-USP). The
results led to the conclusion that the distribution of the internal surface temperature is almost uniform in the two
test cells, but in relation to the dry bulb temperature there is a small vertical temperature gradient in the
conventional cell. This work will contribute significantly to future studies in the area of human comfort and
environmental suitability of buildings
NUMERICAL INVESTIGATION OF NATURAL CONVECTION HEAT TRANSFERFROM SQUARE CYLIND...ijmech
The enhancement of natural convection heat transfer using nanofluids from horizontal square cylinder
placed in a square enclosure is investigated numerically. Water-based Cu is used as the working nanofluid.
The investigation covered a range of Rayleigh numbers of 104
- 106
, nanoparticles volume fraction of
(0<ϕ≤0.2), enclosure width to cylinder height ratio, W/H of 2.5. The investigation includes the solution of
the governing equations in the Vorticity-Stream function space with the aid of a body fitted coordinate
system. Algebraic grid generation is used in the initial transformations, followed by an elliptic
transformation to complete the grid generation to computational domain. The resulting discretized system
of equations is solved using an ADI method. The built code is validated and the results showed an increase
in average Nusselt number with increasing the volume fraction of the nanoparticles for the whole range of
Rayleigh number. The isotherms are nearly similar when the volume fraction of nanoparticles is increased
from 0 to 0.2 for each Rayleigh number but a change in the streamlines is observed.
20 Ideas for your Website Homepage ContentBarry Feldman
Perplexed about what to put on your website home? Every company deals with this tough challenge. The 20 ideas in this presentation should give you a strong starting point.
10 Insightful Quotes On Designing A Better Customer ExperienceYuan Wang
In an ever-changing landscape of one digital disruption after another, companies and organisations are looking for new ways to understand their target markets and engage them better. Increasingly they invest in user experience (UX) and customer experience design (CX) capabilities by working with a specialist UX agency or developing their own UX lab. Some UX practitioners are touting leaner and faster ways of developing customer-centric products and services, via methodologies such as guerilla research, rapid prototyping and Agile UX. Others seek innovation and fulfilment by spending more time in research, being more inclusive, and designing for social goods.
Experience is more than just an interface. It is a relationship, as well as a series of touch points between your brand and your customer. Here are our top 10 highlights and takeaways from the recent UX Australia conference to help you transform your customer experience design.
For full article, continue reading at https://yump.com.au/10-ways-supercharge-customer-experience-design/
How to Build a Dynamic Social Media PlanPost Planner
Stop guessing and wasting your time on networks and strategies that don’t work!
Join Rebekah Radice and Katie Lance to learn how to optimize your social networks, the best kept secrets for hot content, top time management tools, and much more!
Watch the replay here: bit.ly/socialmedia-plan
http://inarocket.com
Learn BEM fundamentals as fast as possible. What is BEM (Block, element, modifier), BEM syntax, how it works with a real example, etc.
Content personalisation is becoming more prevalent. A site, it's content and/or it's products, change dynamically according to the specific needs of the user. SEO needs to ensure we do not fall behind of this trend.
NUMERICAL INVESTIGATION OF AN UNSTEADY MIXED CONVECTIVE MASS AND HEAT TRANSFE...IAEME Publication
In the present paper an analysis of mixed convection of an unsteady magneto hydrodynamic (MHD) flow of an incompressible viscous fluid through porous media due to a vertical porous stretching sheet in the presence of viscous dissipation, thermal radiation and heat source /sink has been carried out. The fluid considered is viscous and incompressible. The governing partial differential equations of the flow, mass and heat transfer are highly non linear hence are converted into a system of ordinary differential equations using suitable similarity transformations. These ordinary differential equations are further converted into 7 first order ordinary differential equations and are solved numerically by Matlab ode-45 solver via shooting method.
Energy crisis is one of the most important problems
the world is facing now-a-days. With the increase of cost of
electrical energy operating cost of cold storage storing is
increasing which forces the increased cost price of the
commodities that are kept. In this situation if the maximum
heat energy(Q) is absorbed by the evaporator inside the cold
room through convective heat transfer process in terms of –
heat transfer due to convection and heat transfer due to
condensation, more energy has to be wasted to maintain the
evaporator space at the desired temperature range of 2- 8
degree centigrade. In this paper we have proposed a theoretical
heat transfer model of convective heat transfer in cold storage
using Taguchi L9 orthogonal array. Velocity of air (V),
Temperature difference (dT), Relative Humidity (RH) are the
basic variable and three ranges are taken each of them in the
model development. Graphical interpretations from the model
justify the reality through anova and s/n ratio calculation.
Climatology Applied To Architecture: An Experimental Investigation about Inte...IJERA Editor
Data were analyzed en relative spatial distribution of the internal surface temperature (IST) and internal air
temperature or dry bulb (TBS), in two different test cells, for a typical experimental day under the influence of
tropical mass. The main goal of this research is to provide guidelines to collect temperature data experimentally
since there is not an appropriate standard to guide this methodological procedure in buildings. The data series of
dry bulb temperature and internal surface temperatures were measured in a test cell with a green roof and the
other with conventional ceramic roof by thermocouples installed at predetermined locations. The data of solar
radiation and the main climatic variables were recorded by the automatic weather station at the Center of Science
Engineering Applied to the Environment (CCEAMA), School of Engineering of São Carlos (EESC-USP). The
results led to the conclusion that the distribution of the internal surface temperature is almost uniform in the two
test cells, but in relation to the dry bulb temperature there is a small vertical temperature gradient in the
conventional cell. This work will contribute significantly to future studies in the area of human comfort and
environmental suitability of buildings
NUMERICAL INVESTIGATION OF NATURAL CONVECTION HEAT TRANSFERFROM SQUARE CYLIND...ijmech
The enhancement of natural convection heat transfer using nanofluids from horizontal square cylinder
placed in a square enclosure is investigated numerically. Water-based Cu is used as the working nanofluid.
The investigation covered a range of Rayleigh numbers of 104
- 106
, nanoparticles volume fraction of
(0<ϕ≤0.2), enclosure width to cylinder height ratio, W/H of 2.5. The investigation includes the solution of
the governing equations in the Vorticity-Stream function space with the aid of a body fitted coordinate
system. Algebraic grid generation is used in the initial transformations, followed by an elliptic
transformation to complete the grid generation to computational domain. The resulting discretized system
of equations is solved using an ADI method. The built code is validated and the results showed an increase
in average Nusselt number with increasing the volume fraction of the nanoparticles for the whole range of
Rayleigh number. The isotherms are nearly similar when the volume fraction of nanoparticles is increased
from 0 to 0.2 for each Rayleigh number but a change in the streamlines is observed.
20 Ideas for your Website Homepage ContentBarry Feldman
Perplexed about what to put on your website home? Every company deals with this tough challenge. The 20 ideas in this presentation should give you a strong starting point.
10 Insightful Quotes On Designing A Better Customer ExperienceYuan Wang
In an ever-changing landscape of one digital disruption after another, companies and organisations are looking for new ways to understand their target markets and engage them better. Increasingly they invest in user experience (UX) and customer experience design (CX) capabilities by working with a specialist UX agency or developing their own UX lab. Some UX practitioners are touting leaner and faster ways of developing customer-centric products and services, via methodologies such as guerilla research, rapid prototyping and Agile UX. Others seek innovation and fulfilment by spending more time in research, being more inclusive, and designing for social goods.
Experience is more than just an interface. It is a relationship, as well as a series of touch points between your brand and your customer. Here are our top 10 highlights and takeaways from the recent UX Australia conference to help you transform your customer experience design.
For full article, continue reading at https://yump.com.au/10-ways-supercharge-customer-experience-design/
How to Build a Dynamic Social Media PlanPost Planner
Stop guessing and wasting your time on networks and strategies that don’t work!
Join Rebekah Radice and Katie Lance to learn how to optimize your social networks, the best kept secrets for hot content, top time management tools, and much more!
Watch the replay here: bit.ly/socialmedia-plan
http://inarocket.com
Learn BEM fundamentals as fast as possible. What is BEM (Block, element, modifier), BEM syntax, how it works with a real example, etc.
Content personalisation is becoming more prevalent. A site, it's content and/or it's products, change dynamically according to the specific needs of the user. SEO needs to ensure we do not fall behind of this trend.
EFFECT OF LOWERING CONDENSING SURFACE TEMPERATURE ON THE PERFORMANCE OF SOLAR...IAEME Publication
In the present work an attempt has been made to study the effect of increasing temperature difference between evaporating surface and condensing surface on the performance of solar distillation system. An indoor simulation study has been performed on a constant temperature bath.
In order to increase the temperature difference between evaporating water surface and the condensing surface, the condensing surface temperature has been reduced by putting ice on the glass cover. It is observed that a maximum of 205 % rise in distillate is obtained by 54 % reduction in the
condensing surface temperature for constant temperature of the evaporating water at 50 0C.
EXPERIMENTAL STUDY ON SOLAR HEATING BY NATURAL HEAT CONVECTION AND RADIATIONADEIJ Journal
Heat storage is a good energy saving option these days. Heat storage makes it possible to use thermal
energy at the required time. Solar water heaters for construction purposes and industrial purposes are the
best source to maintain traditional energy sources and thus can maintain high quality energy and liquid or
steel fuel due to the highest rise in their prices. In recent years, using solar energy has become remarkably
cheap and especially noteworthy. The efficiency of natural solar water heater system depends on collector
and reservoir setting, design and environmental factors such as solar intensity, ambient temperature and
wind conditions. Also, the relative height of the tank and collector separation mainly affects the volume of
the Siphon thermal flow rates, including both forward and reverse flow at night. In this pilot investigation,
two parallel rectangular glass plates were connected to the hot water storage tank. The effect of the
separation space between the plates (collectors) (D) was investigated and reported. The results reported
that outlet temperature in case D= 15 cm for two plates decreased approximately 24% and 23% for two
plates. Also, the heat radiated to the room decreased as the inner space between the two plates increased,
and decreased to approximately 25% as compared to stack plates.
NUMERICAL INVESTIGATION OF NATURAL CONVECTION HEAT TRANSFER FROM CIRCULAR CYL...IAEME Publication
In the present work, the enhancement of natural convection heat transfer utilizing nanofluids as working fluid from horizontal circular cylinder situated in a square enclosure is investigated numerically. The type of the nanofluid is the water-based copper Cu. A model is developed to analyze heat transfer performance of nanofluids inside an enclosure taking into account the solid particle dispersionrs on the flow and heat transfer characteristics. The study uses different Raylieh
numbers (104 , 105 , and 106 ), different enclosure width to cylinder diameter ratios W/D (1.667, 2.5 and 5) and volume fraction of nanoparticles between 0 to 0.2. The work included the solution of the governing equations in the vorticity-stream function formulation which were transformed into body fitted coordinate system
HEAT TRANSFER AND FLOW FRICTION CHARACTERISTICS OF SOLAR WATER HEATER WITH IN...IAEME Publication
Experimental investigation of friction factor and heat transfer characteristics of thermosyphone solar water heater with flat plate solar collector fitted with full length baffle of 10cm
pitch have been presented. The flow regime is laminar for this study with the Reynolds number range 124 to 258. The experimental data obtained were compared with those obtained from plain tube data. The effects of full length baffle inside the tube on heat transfer and friction factor were presented.
The objective of the study is to find a relation for the predicting convective and evaporative
heat transfer coefficient and distillate output for 200 mm and 160 mm water depth. In this present
work an attempt is to be made to use inner glass cover temperature instead of outer glass temperature
as done by other researchers. The sides of the wall of the condensing cover are made up of FRP sheet
to avoid heat losses from sides and to provide the desired inclination to the cover to the bath. It is
exposed to room condition to increase the difference between water temperature and the condensing
cover temperature to increase the heat transfer rate and thus the condensate output.
The operating temperature range for the experiment is to be maintained at steady state from
50oC to 90oC by using a constant temperature bath. The yield obtained for a 1/2 hour intervals were
used to determine the values of constant C and n and consequently convective and evaporative heat
transfer coefficient. It is therefore expected that higher yield is to be obtained at higher temperature
and at minimum depth of water
THEORETICAL AND EXPERIMENTAL STUDIES ON STEPPED SOLAR STILLIAEME Publication
In the present work, an attempt has been made to study the performance of a solar still. Many thermal models were developed by researchers to predict the performance of solar still. Thermal models developed by Dunkle and by Tsilingiris to predict the performance of the still is considered for the present study. A stepped solar still is fabricated for experimental study in the premises of SHIATS Allahabad (U.P.) India. It is observed that the daily productivity of more than 5 kg is obtained by still area of 1 m2. It is further observed that the daily productivity predicted by Tsilingiris model is closer than the Dunkle model.
THEORETICAL AND EXPERIMENTAL STUDIES ON STEPPED SOLAR STILLIAEME Publication
In the present work, an attempt has been made to study the performance of a solar still. Many thermal models were developed by researchers to predict the performance of solar still. Thermal models developed by Dunkle and by Tsilingiris to predict the performance of the still is considered for the present study. A stepped solar still is fabricated for experimental study in the premises of SHIATS Allahabad (U.P.) India. It is observed that the daily productivity of more than 5 kg is obtained by still area of 1 m2. It is further observed that the daily productivity predicted by Tsilingiris model is closer than the Dunkle model.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
EFFECT OF WATER DEPTH AT 30˚ INCLINED CONDENSING COVER IN THE PERFORMANCE OF ...IAEME Publication
The objective of the study is to find a relation for the predicting convective and evaporative heat transfer coefficient and distillate output for 200 mm and 160 mm water depth. In this present work an attempt is to be made to use inner glass cover temperature instead of outer glass temperature
as done by other researchers. The sides of the wall of the condensing cover are made up of FRP sheet to avoid heat losses from sides and to provide the desired inclination to the cover to the bath. It is exposed to room condition to increase the difference between water temperature and the condensing
cover temperature to increase the heat transfer rate and thus the condensate output.
The use of solar energy for water desalination becomes vital for sustainable water supply.
This paper aims to analyze the experimental behavior of double slope solar theoretically still
(DSSS). In this work, we proposed a theoretical model that can predict the DSSS performance. The
theoretical results of temperatures and the impact of wind speed on water production are in good
agreement with experimental findings. It is found that the temperature augments with augmenting the wind speed until a critical value, where the temperature starts to drop. In addition, water
production increases with increasing speed. In this way, we determined the optimum wind speed
to have maximum water production with minimum energy consumption simultaneously. The validation of the theoretical model allows us to predict the DSSS production under different climatic
conditions and to scale DSSS dimensions according to the need of water. The salinity of the water
is not a determining factor in its production. The production at 4.2 kWh/m2 daily insolation was
0.58 L/d. The volume of distilled water reaches a maximum value (62.3% efficiency) when glass
and environment temperatures are similar. This phenomenon occurs at 5.5 m/s wind speed
Research Inventy : International Journal of Engineering and Scienceinventy
Research Inventy : International Journal of Engineering and Science
Research Inventy : International Journal of Engineering and Science is published by the group of young academic and industrial researchers with 12 Issues per year. It is an online as well as print version open access journal that provides rapid publication (monthly) of articles in all areas of the subject such as: civil, mechanical, chemical, electronic and computer engineering as well as production and information technology. The Journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. Papers will be published by rapid process within 20 days after acceptance and peer review process takes only 7 days. All articles published in Research Inventy will be peer-reviewed
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
"Impact of front-end architecture on development cost", Viktor TurskyiFwdays
I have heard many times that architecture is not important for the front-end. Also, many times I have seen how developers implement features on the front-end just following the standard rules for a framework and think that this is enough to successfully launch the project, and then the project fails. How to prevent this and what approach to choose? I have launched dozens of complex projects and during the talk we will analyze which approaches have worked for me and which have not.
Empowering NextGen Mobility via Large Action Model Infrastructure (LAMI): pav...
Bn34404407
1. Nikhil Singh, Vishal Francis / International Journal of Engineering Research and Applications
(IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 3, Issue 4, Jul-Aug 2013, pp. 404-407
404 | P a g e
Investigating the Effect of Water Temperature and Inclination
Angle on the Performance of Single Slope Solar Still: A Taguchi
Approach
Nikhil Singh1
, Vishal Francis2
1, 2
(Department of Mechanical Engineering, SHIATS-DU, Allahabad-211007)
ABSTRACT
The present work focuses on the
application of Taguchi technique to investigate
the effect of temperature and inclination angle on
the performance of the single slope solar stills
inclined at 15O
, 30O
and 45O
.
An indoor simulation model was
developed using constant temperature water bath
to maintain water temperatures at steady state
for the purpose of experiment. The condensing
covers inclined at 15O
, 30O
and 45O
were
fabricated of commonly used glass sheet to form
top inclined cover and GRP sheets to make the
side walls of the cover.
Orthogonal arrays of taguchi, the
Signal–to-Noise (S/N) ratio, the analysis of
variance (ANOVA), and regression analysis have
been employed to analyze the effect of the factors
on the response. Linear regression equation has
been developed with an objective to establish a
correlation between the selected parameters and
the Productivity. The predicted values have been
compared with experimental data and are found
to be in good agreement. Temperature is found to
be the most significant factor contributing
towards the productivity.
Keywords: Taguchi method, ANOVA, Regression,
Solar Distillation, Inclination angle, Condensing
Cover
I. INTRODUCTION
Clean potable water is a basic necessity for
man along with food and air. Fresh water is also
required for agricultural and industrials purposes.
Direct use of water from sources like rivers, lakes,
sea and underground water reservoirs is not
advisable, because of the presence of higher amount
of salt and harmful organism. Also the higher
growth rate in world population and industries is
escalating the demand for fresh water. The natural
sources can meet a limited demand and this leads to
acute shortage of potable water. Water desalination
is an affective technique to meet the demand of
portable water for many countries.
Distillation is a well-known thermal
process for water purification and water
desalination. Most of the conventional water
distillation processes consumes high quantity of
energy and require fossil fuels as well as electric
power for their operation. A solar still, however,
makes use of solar energy for desalination and
distillation process. It is a greenhouse like structure
having a shallow water basin. Water vapor generated
inside the still condenses at the inner side of its
transparent cover, which is convectively cooled from
the outside by natural airflow. The condensed water
is than drained out through outlet passage.
The current work focuses on the application
of Taguchi technique to investigate the effect of
inclination angle and water temperature on the
productivity of single slope solar stills inclines at
15O
, 30O
and 45O
.
II. LITERATURE SURVEY
While Hay presented solar still design
concepts as far back in 1960s [1], including the use
of plastic transparent covers [2], it was Dunkle [3]
who derived a widely used as well as analyzed,
semi-empirical relation for evaluating the internal
heat and mass transfer within solar distillation units.
This empirical relation is popularly known as
Dunkle’s relation. Malik et al. [4] then summarized a
historical review on solar distillation systems. Later
on, Tiwari and Lawrence [5] attempted to
incorporate the effect of inclination of the
condensing surface using the same values of C and n
as proposed by Dunkle. Furthermore, Kumar and
Tiwari [6] developed a thermal correlation for
outdoor conditions based on linear regression
analysis to determine convective mass transfer for a
varying range of Grashof numbers. They felt a need
to develop an empirical relation to calculate
convective mass transfer without any limitations.
Thus, these values were free from the shortcomings
of Dunkle’s relation. Tripathi and Tiwari [7]
thereafter applied the correlation of Kumar and
Tiwari [6] to evaluate the internal heat and mass
transfer correlations for active solar distillation for a
very small inclination of condensing cover in winter
climatic conditions. Though a lot of work has been
done on solar desalination in general (Delyannis
[8]), and on single-slope passive solar distillation, in
particular, the optimization of cover inclination and
water depth for maximum daily yield remains
outstanding. This technical brief describes an
attempt to carry out such an optimization.
2. Nikhil Singh, Vishal Francis / International Journal of Engineering Research and Applications
(IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 3, Issue 4, Jul-Aug 2013, pp. 404-407
405 | P a g e
III. EXPERIMENTAL SETUP
The experimental set-up includes a constant
temperature water bath, condensing covers inclined
at 15°, 30° & 45°, digital temperature indicators,
well calibrated thermocouples (by Zeal
Thermometer), two transparent pipes of small
diameter and a measuring flask. The output from the
still is collected through a channel. Two plastic pipes
are connected to this channel to drain the distilled
water to an external measuring jar. The total
capacity of the constant temperature bath is 40 L,
and its effective evaporative surface area is 0.3 m ×
0.4 m. The water is heated by bath heating coils.
Table 1, shows the detailed dimensions of
condensing covers.
TABLE 1: DETAILED DEMENSIONS OF
CONDENSING COVERS
3.1 PROCEDURE OF EXPERIMENT
The experiments were conducted in Heat
and Mass Transfer Lab of Department of
Mechanical Engineering, SHIATS-DU on different
days in the month of June, 2012. The inclination
angles of fabricated condensing covers are 15°, 30°
& 45° and the operational temperature range is from
600
to 700
at intervals of 5°C. Constant temperature
bath was started at 8:30 am an hour before
commencing the experimental work to make sure
that steady state has been reached. Continuous
readings for every half an hour were then observed
and recorded under no fan conditions (natural
mode). The same process was applied to all three
working temperatures 60°C, 65°C & 70°C at three
inclination angles.
3.2 TAGUCHI METHOD
Taguchi method is being widely used by
researchers and industrialists in engineering design,
as it reduces the number of experiments to be
conducted by using orthogonal arrays and at the
same time studies the complete parametric space
(Yang WH et al, 1998).
The effect of all the factors on the response can be
investigated by doing minimum number of
experiments, which are arranged suitably in the
orthogonal array.
Analysis of Variance, a statistical
technique, it is used for calculation of F value, to
find out the significance of each factor on the
desired response.
The process parameters varied in the experiments
were Inclination angle (Degree) and temperature
(o
C). Table 2 shows the parameters with their levels.
TABLE 2: PROCESS PARAMETERS AND
THEIR LEVELS
IV. RESULTS AND ANALYSIS
Table 3 shows the values of the response
obtained from the experimental runs, designed by
Taguchi method, the corresponding values of S/N
Ratio is mentioned for each run. L9 orthogonal array
was employed for the experiment.
TABLE 3: RESULTS FOR EXPERIMENTAL
TRIAL RUNS
4.1 ANALYSIS OF S/N RATIO
The S/N ratio is calculated using larger the
better characteristics for Productivity. Taguchi
method studies the response variation using S/N
ratio, greater the value of S/N ratio better will be the
result.
S/N ratio is calculated by using equation (1)
(1)
Where n is the number of measurement in a trail/row
and Yi is the measured value in the run/row.
S.
No
Parameter Dimension
of 15°
(mm)
Dimensions
of 30°
(mm)
Dimensions
of 45°
(mm)
1 Length 430 430 430
2 Width 330 330 330
3 Higher
height
300 440 625
4 Lower
height
64 69 75
Process Parameters Level 1 Level 2 Level 3
Inclination angle (o
) 15 30 45
Temperature (o
C) 60 65 70
Exp.
No.
Inclination
angle (°)
Temp.
(°C)
Productivity
(ml)
SNR
(Signal to
Noise
Ratio)
1 15 60 40.4 32.1276
2 15 65 54.4 34.712
3 15 70 67.2 36.5474
4 30 60 44.4 32.9477
5 30 65 65 36.2583
6 30 70 81.8 38.2551
7 45 60 53.6 34.5833
8 45 65 66.8 36.4955
9 45 70 97 39.7354
3. Nikhil Singh, Vishal Francis / International Journal of Engineering Research and Applications
(IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 3, Issue 4, Jul-Aug 2013, pp. 404-407
406 | P a g e
TABLE 4: RESPONSE TABLE FOR SIGNAL
TO NOISE RATIOS LARGER IS BETTER
Table 4 shows the Responses table for Signal to
Noise ratios of larger the better characteristics for
each level of the parameters. The difference of S/N
Ratio between level 1 and level 3 indicates the effect
of the process parameters on the response, greater
the difference, greater will be the effect.
The above table indicates that for
Productivity, the parameter that had the most
influence is Temperature with a delta value of
(4.96). Figure1 shows the main effect plot for S/N
ratio for productivity.
FIGURE 1: MAIN EFFECT PLOT FOR S/N
RATIO
453015
38
37
36
35
34
33
706560
Inclination angle (°)
MeanofSNratios
Temp.(°C)
Main Effects Plot for SN ratios
Data Means
Signal-to-noise: Larger is better
4.2 ANALYSIS OF VARIANCE (ANOVA)
The response data obtained via
experimental runs for Tool life were subjected to
ANOVA for finding out the significant parameters,
at above 95% confidence level and the results of
ANOVA thus obtained for the response parameters
are illustrated in table 5.
TABLE 2: ANALYSIS OF VARIANCE FOR S/N
RATIO FOR PRODUCTIVITY (ML)
On observing the P values of table 4 it is
clear that Temperature is the most significant factor.
The calculated F value for both the parameters are
more than the table F value; (F0.05, 2, 8 = 4.46) at 95%
confidence level.
4.3 REGRESSION ANALYSIS
The Inclination angle and Temperature are
considered in the development of mathematical
model for Productivity. The correlation between the
process parameters and Productivity is obtained by
linear regression; equation 2 shows the developed
model.
Productivity (ml) = - 188 + 0.616 Inclination angle
(°) + 3.59 Temp(°C (2)
The predicted and the experimental values
of Productivity are shown in figure 2. It is clear from
the figure that most of the predicted values are in
close agreement with the experimental values for
Productivity.
Figure 2 shows the comparison between the
experimental values and the predicted values.
FIGURE 2: EXPERIMENTAL RESULTS VS
PREDICTED VALUES OF PRODUCTIVITY
(ML)
987654321
100
90
80
70
60
50
40
30
Experimental runs
Productivity(ml)
Experimental Values
Predicted Values
Variable
Experimental results Vs Predicted values for Productivity (ml)
V. CONCLUSION
The study discusses about the application of
Taguchi method and ANOVA to investigate the
effect of process parameters on Productivity. From
the analysis of the results obtained following
conclusion can be drawn: -
Statistically designed experiments based on
Taguchi method are performed using L9
orthogonal array to analyze Productivity. The
results obtained from analysis of S/N Ratio and
ANOVA were in close agreement.
Optimal parameters for Productivity are
Inclination angle with 450
and 70o
C
Temperature
Linear regression equation is developed to
predict the values of Productivity, and the
predicted values are compared with the
measured value.
Level Inclination
angle (o
)
Temperature (o
C)
1 33.46 33.22
2 35.82 35.82
3 36.94 38.18
Delta 2.48 4.96
Rank 2 1
Source D
F
SS MS F P
Inclination
angle (o
)
2 9.223 4.611 21.2
1
0.007
Temperatu
re (o
C)
2 36.92
9
18.46
4
84.9
3
0.001
Error 4 0.870 0.217
Total 8 47.02
2
4. Nikhil Singh, Vishal Francis / International Journal of Engineering Research and Applications
(IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 3, Issue 4, Jul-Aug 2013, pp. 404-407
407 | P a g e
Both Inclination Angle and Water Temperature
are found to be significant factors but Water
Temperature is found to be most significant
factor.
REFERENCES
[1] Hay, H. R., 1965, “New Concepts in Solar
Still Design,” Proceedings of the First
International Symposium on Water
Desalination, Washington, DC, Vol. 1, pp.
511–527.
[2] Hay, H. R., 1973, “Plastic Solar Stills: Past,
Present, and Future,” Sol. Energy, 14 (4),
pp. 393–404.
[3] Dunkle, R. V., 1961, “Solar Water
Distillation: The Roof Type Still and a
Multiple Effect Diffusion Still,”
Proceedings of the International
Development in Heat Transfer, ASME,
University of Colorado, Pt. V, p. 895.
[4] Malik, M. A. S., Tiwari, G. N., Kumar, A.,
and Sodha, M. S., 1982, Solar Distillation,
Pergamon, London.
[5] Tiwari, G. N., and Lawrence, S. A., 1999,
“New Heat and Mass Transfer Relations for
a Still,” Energy Convers. Manage., 31, pp.
201–203.
[6] Kumar, S., and Tiwari, G. N., 1996,
“Estimation of Convective Mass Transfer
in Solar Distillation System,” Sol. Energy,
57, pp. 459–464.
[7] Tripathi, R., and Tiwari, G. N., 2005,
“Effect of Water Depth on Internal Heat
and Mass Transfer for Active Solar
Distillation,” Desalination, 173, pp. 73–88.
[8] Delyannis, E., 2003, “Historic Background
of Desalination and Renewable Energies,”
Sol. Energy, 75_5_, pp. 357–366.
[9] Tiwari, A. Kr., and Tiwari, G. N., 2006,
“Effect of Water Depth on Heat and Mass
Transfer in a Passive Solar Still: In
Summer,” Desalination, 195, pp. 78–94.
[10] Tiwari, G. N., 2002, Solar Energy, 1st ed.,
Narosa, New Delhi/CRC, New York, p.
506.
[11] Taguchi G, Hocheng, Taguchi methods
orthogonal arrays and linear graphs, tools
for quality engineering, (Dearborn, MI:
American Supplier Institute, 1987, pp. 35–
38
[12] 1Yang WH, Tarng YS, Design optimization
of cutting parameters for turning operations
based on the Taguchi method, Journal of
Material Processing Technology, 84, 1998,
pp. 122–129.