Week 5 - Rayleigh Taylor Instability

AIM: Solving steady state and unsteady state 2D heat convection equation The 2D heat conduction equation is given by: `(delT)/(delt) = alpha*((del^2T)/(delx^2) + (del^2T)/(dely^2))` Boundary conditions:  The following information has been given about the domain:  Top Boundary = 600 K Bottom Boundary = 900 K Left…

Aim: To derive 4th order approximation of the second order derivative using central, skewed right and skewed left sided difference method using taylor table method.  Procedure:  1. Central scheme method:  Number of nodes(n) = p + q - 1 where, q = order of approximation = 4 p = order of derviative = 2 Therefore,…

AIM: Simulating combustion of natural gas.  OBJECTIVES:  Part 1: Perform a combustion simulation on the combustor model and plot the variation of the mass fraction of the different species’ in the simulation using line probes at different locations of the combustor as shown in Fig. You need to plot…

AIM: To perform the parametric study on the gate valve simulation by setting the opening from 10% to 80%.  THEORY:  What is a gate valve?  A gate valve is a valve that opens by lifting a barrier out of the path of the fluid. By lifting, the gate disc user is able to increase the mass flow rate of the fluid…

Aim: To perform analysis on cyclone seperator and calculate the seperation efficiency and pressure drop.  Objective:  To write a few words about any four empirical models used to calculate the cyclone separator efficiency.  To perform an analysis on a given cyclone separator model by varying the particle…

AIM: Conjugate heat transfer on a graphic card THEORY:  What is conjugate heat transfer? Conjugate heat transfer corresponds to the heat transfer in solids and fluids simulatenously. In solids conduction is more dominant whereas in fluids convection is more dominant.  What is a graphic card?  Graphics card is a hardware…

AIM: Conjugate heat transfer on a graphic card THEORY:  What is conjugate heat transfer? Conjugate heat transfer corresponds to the heat transfer in solids and fluids simulatenously. In solids conduction is more dominant whereas in fluids convection is more dominant.  What is a graphic card?  Graphics card is…

AIM: To understand the Rayleigh Taylor Instability  INTRODUCTION: What is Rayleigh taylor instability?  The RT-instability is an instability that occurs at the intersection of two or more fluids with different densities. Whenever a heavier fluid (a fluid with greater density) is kept over a lighter fluid (lower…

AIM: To perform conjugate heat transfer analysis on Exhaust ports.  INTRODUCTION AND THEORY:  What is Conjugate heat transfer (CHT) CHT stands for Conjugate heat transfer.  Conjugate heat transfer corresponds to the heat transfer in solids and fluids simulatenously. In solids conduction is more dominant…

AIM: To study the external flow over an ahmed body.  INTRODUCTION:  What is an Ahmed body?  It is a 3D model that is a representative of a normal passenger car which was created to validate CFD code. We can use Ahmed body to find out different modelling stratergies because many engineers have performed a…

AIM: To study the flow over a cylinder and understand karmen vortex street.  THEORY: What is a vortex?  A vortex is a mass of fluid moving in a circular motion that tends to form a cavity or vaccum at the centre. Whenever a body is nearby a vortex, the general behaviour is to be attracted to the vaccum present…

Aim: Simulation of a Mixing Tee using ANSYS Fluent.  Introduction and theory:  What is a Mixing Tee?  A mixing tee is a pipe like geometry which has two inlets provided within it and an outlet where the flowing entity is measured.  Where is it used?  A mixing tee is used when you want to mix two…

Aim: Surface wrap on Automotive Assembly Procudure:  1. The first thing we do is to import the geometry within ANSA. We have to do surface wrap for three components i.e., Engine, Gearbox and the transmission. We will individually open these models and after their necessary cleanup for surface wrap and then we will…

Aim: CFD meshing for Tesla cyber truck.  Procedure: 1. The first thing to be done is to import the geometry to ANSA.  2. As we can see that the entire model is filled with single cons. This indicates that maybe the single cons have not been refreshed. We will use the TOPO feature and select the entire geometry and refresh…

A google drive link containing the files for week 4 challenge has been given below which contain  1. Week 4 - CFD mesh for BMW car.docx 2. Week 4 - CFD mesh for BMW car M6.ansa   Google drive link: https://drive.google.com/drive/folders/1bkMA2N-WaKABYjfDL4SBQS3McyPcgi6r?usp=sharing 

Google drive link: https://drive.google.com/drive/folders/1M1ebVrvmTKXAvbhWz5m_4f2dmy1c0Ibx?usp=sharing I have attatched the following google drive link which contains two files:  1. Week - 3: CFD meshing on a turbocharger.ansa 2. Week - 3: CFD meshing on a turbocharger.docx

The file for this challenge has been provided as .zip folder as required by the challenge.  The following files have been provided :      1. Week 2 - Surface mesh on a pressure valve (1mm mesh).ansa     2. Week 2 - Surface mesh on a pressure valve (3mm mesh).ansa     3. Week 2 - Surface mesh on a pressure valve (5mm mesh).ansa…