This document summarizes a CFD analysis of a centrifugal pump. The objectives were to analyze the pump at different flow conditions, plot characteristic curves, and analyze cavitation. The analysis used ANSYS Fluent and CFX to model the solid pump components with over 19 million mesh elements. Boundary conditions were applied to simulate flow rates from 22 to 34 kg/s. Results showed maximum efficiency of 89.24% occurring at the design flow rate, and lower efficiency under cavitation due to higher power needs to pump vapor. Pressure and velocity plots as well as performance curves matched published literature values.
fundamentals & basics of pneumatic systemNitin Chand
This presentation shows
1)The evolution of the industrial technology.
2)Types of media used in industrial processes.
3) Difference advantages between pneumatics , hydraulics & electrical as a media
4) Brief of basic principals of pneumatic system.
Compressors complete description and a well arranged slides for the topic. That's too the point and relevant slide share you are looking for! Hope you will find it easy to understand
Thank you!
fundamentals & basics of pneumatic systemNitin Chand
This presentation shows
1)The evolution of the industrial technology.
2)Types of media used in industrial processes.
3) Difference advantages between pneumatics , hydraulics & electrical as a media
4) Brief of basic principals of pneumatic system.
Compressors complete description and a well arranged slides for the topic. That's too the point and relevant slide share you are looking for! Hope you will find it easy to understand
Thank you!
The Powerpoint presentation discusses about the Introduction to CFD and its Applications in various fields as an Introductory topic for Mechanical Engg. Students in General.
This chapter contains:-.
Analytical Methods of two dimensional steady state heat conduction
Finite difference Method application on two dimensional steady state heat conduction.
Finite difference method on irregular shape of a system
It is power point presentation on belt and chain drive. you can find working and mechanism of chain and belt drive and their advantage and disadvantages.....enjoy.
This Presentation Describes the Base Study about different Mechanical Drives and their selection parameters to use in Industry. it will also clear the idea behind selecting the mechanical drives only instead of going for other types of drives.
The Powerpoint presentation discusses about the Introduction to CFD and its Applications in various fields as an Introductory topic for Mechanical Engg. Students in General.
This chapter contains:-.
Analytical Methods of two dimensional steady state heat conduction
Finite difference Method application on two dimensional steady state heat conduction.
Finite difference method on irregular shape of a system
It is power point presentation on belt and chain drive. you can find working and mechanism of chain and belt drive and their advantage and disadvantages.....enjoy.
This Presentation Describes the Base Study about different Mechanical Drives and their selection parameters to use in Industry. it will also clear the idea behind selecting the mechanical drives only instead of going for other types of drives.
Improving Energy Efficiency of Pumps and Fanseecfncci
Pumps and Fans are energy consuming equipment that can be found in almost all Industries. Therefore, it is important to check if they are running efficiently. This presentation give an overview about energy saving opportunities in pump and fan equipment. It was prepared in the context of energy auditor training in Nepal in the context of GIZ/NEEP programme. For further information go to EEC webpage: http://eec-fncci.org/
Overhauling of a machine is defined as a process of general maintenance performed on a machine or other industrial equipment. The goal of overhauling is to keep the system in serviceable condition. Regular checks can prevent all kinds of critical damage.
Overhauling is the effective maintenance program should be such that the basic objective is achieved with minimum possible expenditure. The availability of turbine, and mainly the operating reliability, depends on the satisfactory operation of its control, protection of ancillary equipment such as pumps etc. The study deals with the tests and maintenance necessary to ensure good operating reliability for the turbine. The Turbine Overhauling work is generally done during a planned shutdown. An overhauling is a detailed inspection and overhaul of the entire gas turbine set including the turbine casing, rotor, seals, and bearings; the generator; and auxiliaries such as the gear, couplings, lubrication system, and controls.
An effective reservoir management by streamline based simulation, history mat...Shusei Tanaka
The use of the streamline-based method for reservoir management is receiving increased interest in recent years because of its computational advantages and intuitive appeal for reservoir simulation, history matching and rate allocation optimization. Streamline-based method uses snapshots of flow path of convective flow. Previous studies proved its applicability for convection dominated process such as waterflooding and tracer transport. However, for a case with gas injection with strong capillarity and gravity effects, the streamline-based method tends to lose its advantages for reservoir simulation and may result in loss of accuracy and applicability for history-matching and optimization problems.
In this study, we first present the development of a 3D 3-phase black oil and compositional streamline simulator. Then, we introduce a novel approach to incorporate capillary and gravity effects via orthogonal projection method. The novel aspect of our approach is the ability to incorporate transverse effects into streamline simulation without adversely affecting its computational efficiency. We demonstrate our proposed method for various cases, including CO2 injection scenario. The streamline model is shown to be particularly effective to examine and visualize the interactions between heterogeneity which resulting impact on the vertical and areal sweep efficiencies.
Next, we apply the streamline simulator to history matching and rate optimization problems. In the conventional approach of streamline-based history matching, the objective is to match flow rate history, assuming that reservoir energy was matched already, such as pressure distribution. The proposed approach incorporates pressure information as well as production flow rates, aiming that reservoir energy are also reproduced during production rate matching.
Finally, we develop an NPV-based optimization method using streamline-based rate reallocation algorithm. The NPV is calculated along streamline and used to generate diagnostic plots of the effectiveness of wells. The rate is updated to maximize the field NPV. The proposed approach avoids the use of complex optimization tools. Instead, we emphasize the visual and the intuitive appeal of streamline methods and utilize flow diagnostic plots for optimal rate allocation.
We concluded that our proposed approach of streamline-based simulation, inversion and optimization algorithm improves computational efficiency and accuracy of the solution, which leads to a highly effective reservoir management tool that satisfies industry demands.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
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.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
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.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
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.
2. OOuuttlliinnee ooff PPrreesseennttaattiioonn
• Introduction
• Objectives of Present Studies
• Solid and Fluid Model
• Meshing
• Result and Discussion
• Grid In-dependency
• Cavitation Analysis
3. OObbjjeeccttiivvee
• CFD analysis of Centrifugal Pump in pump mode for
different flow conditions in Fluent and Ansys CFX.
• To plot the characteristics curves and compare it with the
model testing results.
• CFD analysis of Centrifugal Pump in pump mode with
cavitation.
4. IInnttrroodduuccttiioonn
Centrifugal Pump
• Due to centrifugal action pressure is developed and it will lift
the fluid to certain height
• It is widely used in industry as well as domestic level
5. CCaavviittaattiioonn iinn ppuummpp
• Cavitation can be define as the breakdown of a liquid
medium under very low pressures into vapour
Phase diagram of water
Pressure plot for impeller section
6. SSppeecciiffiiccaattiioonn ooff PPuummpp
Parameter Value
Rated Head 15 m
Discharge 1500 LPM
Speed 1500 RPM
Power 4.5 kW
Suction flange
dia. 75 mm
Delivery flange
dia. 100 mm
Impeller dia. 250 mm
Type Medium speed, Centrifugal, Volute
casing Pump taken for CFD Analysis
10. MMeesshhiinngg Type Tetrahedral Grid
Spacing 2mm
No. of Elements in Casing 11,55,478
No. of elements in Impeller 8,10,301
Total No. of Elements 19,65,779
Data for mesh of interval 2 mm
Spacing Elements
10 34588
5 178366
3 689111
2.7 942615
2.5 1111607
2 1965779
Mesh of interval 2 mm in Gambit
11. BBoouunnddaarryy CCoonnddiittiioonnss
Boundary Condition
Mass flow (kg/s) Po given (Pa)
22 170000
25 164000
26 162000
28 158000
29 152000
32 130000
34 103000
Performance curves for Pump
20. CCoonncclluussiioonnss
• For backward curved vanes centrifugal pump increase in mass flow rate Head
decreases, Input and Output power increases
• Efficiency first increases with discharge, reach maximum efficiency at rated
discharge and then decreases
• Input power required in CFD is less than model testing because leakage and
friction loss are not considered.
• Maximum efficiency is found at 0.029 m3/s which is 89.24%.
• In cavitation mode efficiency is 66.95%
• Due to cavitation efficiency of pump reduces because for pumping of vapour
more power is required
• Also due to cavitation head developed by pump is less because vapour has less
density than water
