Week 6 - CHT Analysis on a Graphics card

  Aim:  To understand the flow throug a channel by conducting simulation in Converge. Introduction: A channel is like a pipe throug which fluid (air) flows. As the fluid flows it creates a velocity profile that has a perticular shape due to the existnce of no-slip condition - zero velocity of flow near the…

AIM: To conduct a study on expansion fan caused due to supersonic flow.  Introduction: This simulation is conducted to understand the sudden increase in the cross-section area that lead to creation of an expansion fan (Prandlt-Meyere shock) in a supersonic flow.  An expansion fan is a peturbation that…

Introduction: A throttle is used to control the mass flow rate of the fow at the outlet. By adjustment of the valve one can have precise control over mass flow rate and velocity of the flow. In this problem a transient (Time-Based) approach is taken to understand how the flow will wvolvw in time.  The simulation is…

Introduction The Elbow contains a throttle which allows flow through it and helps in controlling the mass flow rate at the outlet. The purpose of this simulation is to understand the effects of introducing a thrtle and assessing its effects on the Velocity, Pressure and mass flow rate at the outlet. The Simulation is a…

Aim: Flow over backwards facing step.  Introduction: backwards facing step is a crucila problem to test the code for CFD as it has lot of experimental data to check. In this simulation an attemp is made to understand the effects of finer grid and also to understand Flow separation. The geometry used is displayed as…

Title: Combustion of Natural Gas Simulation   This study is conducted to study combustion and understand the effects of adding water to the fuel. This will give insight into the NOX and soot formation after coombustion which are pollution causing agents.   There are 2 studies that are conducted: 1) To conduct…

AIM: Parametric study of a gate valve.   Introduction: This study is to understand the mass flow rate and the pressure drop to calculate the Flow coeffcient and flow factor to understand the efficiency of the Gate valve. The study includes parametrization in ANSYS Fluent.    Defining properties 1) Flow coefficient:…

Aim: Simulating a Discrete phase modeling for cyclone separator. Introduction to Cyclone separator A cyclone separator is a device which is used to separate particles contained a fluid (air or gas). This devices are mostly used in separating the particles from flue gasses and separating the air from the particles so as…

Aim: To conduct a Conjugate Heat Transfer analysis on a Graphics Card.   Introduction:  This study involves the analysis of situations where we observe the Maximum temperature and Maximum Heat Transfer Coefficient attained by the relevent components of a graphics card. This involves creating shared topology in…

Aim: To evaluate heat transfer coefficient on the inner wall of an exhaust port.   Conjugate Heat Transfer Analysis: Conjugate heat transfer analysis is a method of simulting flow where we are intrested in how Energy/Temperature is carried from fluid to the surface or surface to surface and the body of the object…

Content Sr No Topic 1 Introduction 2 Problem setup in Ansys 3 Results 4 Why Transient solver 5 Atwood Number 6 Conclusion   Aim: To understand Rayleigh-Taylor instability and to simulate it using software(Ansys Fluent). 1) Introduction: Rayleigh Taylor instability is caused when 2 fluids of differing densities are…

  Content 1 Introduction 2 Snippets of the problem setup in Ansys 3 Simulation and its result 4 Significance of Wake 5 Grid Independence 6 Significance of point of seperation 7 Conclusion   1) Intoduction: What is an Ahmed body and what is its significance?  Ahmed body is an experiment steup which help in…

Content 1 Introduction 2 Snippets of setup 3 Steady v/s Transient (Re100) 4 Steady state simulation for (Re=10, 1000, 10000, 100000) 5 Concluding remarks 6 Refrence (Research paper)   Aim: To simulate and analyze flow around a cylinder in Ansys Fluent.   1) Introduction: Von Karman vertex street theory…

Content Sr No Topic 1 Introduction 2 Mesh Configuration 3 Short T Mesh   3.1.a K-Epsilon vs K-Omega (Mr: 2)   3.1.b Reason to choose solver 3.2 Short T Momentum Ratio: 4 4 Long T Mesh   4.1 Momentum Ratio: 2   4.2 Momentum Ratio: 4 5 Mesh Independence test 6 Comment on the result (Length and Momentum…

  Content Sr No Topic 1 Introduction 2 Given data   MATLAB code 3 Setting up simulation   3.1 Creating geometry   3.2 Creating files   OpenFoam Result 4 Simulation results   4.1 `10^o`   4.2  `25^o`   4.3 `45^o` 5 Comment on the result 6 Conclusion       1) Introduction:…

  Content Sr No. Topic 1 Introduction   Analytical Solution 2 Assumed values 3 Steps to solve for Analytical Solution 4 Analytical Solution   Simulation 5 Automation  5.1 Code for creating co-ordinate  5.2 Code for creating blockMeshDict 6 Simulation Files  6.1 blockMeshDict  6.2 pressure…

    Content Sr no Topic 1 Finite Volume Method  1.1 Non-Conservative form  1.2 Conservative form   A-Non-Conservative form 2 Case setup for 1D Nozzle  2.1 Predictor method  2.2 Corrected values of Primitive variables  2.3 Points to consider   B-Conservative form 3 Points to…

Content Sr no Topic 1 Theory  1.1 Problem Statement 2 Case setup   Code  2.1 Initial Conditions  2.2 Time Setup   Case 1(ungraded) 3 blockMesh  3.1 Result  3.2 Plot over line   Case2(Graded) 4 blockMesh  4.1 Result  4.2 Plot over line 5 Why Grading factoe is necessary?…

  Content   Sr No Topic 1 Finite Voume Method  1.1 Comparision  1.2 Steps to solve FVM 2 Interpolation 3  Flux Limiter   1) Finite Volume Method Finite Volume Method is a Discretisation method that accounts for 3D arbitary shapes. Unlike FDM which is used to create an approximate algebric…

Theory: In a problem involving change that takes plcae as time goes by it is necessary to see its effects as time passes. As the solution approaches to a state it won't change any further this is what we call a Steady state. Many a time it is important to understand the effects to time passing on a process. This process…

Theory:  Taylor series approximation gives a pretty good approximation of a continuous function into an algebric form. It can give approximation of PDE of all forms and all orders. here we have an equation which is a second order derivative, `(del^2f)/(delx^2)`. According to Taylor series we can use 3 types of…