Week 3 - External flow simulation over an Ahmed body.

Aim: For the provided Tesla Cybertruck model, conduct a thorough examination to identify and address any geometric errors. Assign appropriate Property IDs (PIDs) as needed. Execute meshing with a target length that suits the model and adhere to element quality criteria. Additionally, create a wind tunnel and proceed with…

AIM: To understand the process of surface wrapping around an assembly, involving surface meshing throughout the entire volume, perform the following steps for the provided model: conduct topological cleanup by merging all three components and then proceed with meshing. Target length = 3mm INTRODUCTION: Surface wrap is…

Aim: Examine and rectify all geometric errors in the provided model's half section, and assign suitable PIDs. Execute meshing with the specified target length and adhere to element quality criteria. Once the half model is meshed, apply symmetry to replicate the results on the other side. Objective: Target lengths for the…

  CFD meshing on Turbocharger AIM: For the provided turbocharger model, first, identify and rectify any geometric errors to ensure proper volumes. Next, establish and assign PIDs as needed. Then, generate a surface mesh and utilize it as the basis for constructing a volumetric mesh. Execute surface meshing using the…

  Surface meshing on a Pressure valve Objective: ·         Assess and rectify any geometrical errors for the specified model, and subsequently, execute Topology clean-up procedures. ·         Create three separate cases by setting three distinct target lengths and generating meshes accordingly. The target lengths for these…

Conjugate heat transfer analysis on a graphics card. Objectives: Run the simulation by varying the velocity from 1m/sec to 5m/sec for at least 3 velocities and discuss the results. Find out the maximum temperature and heat transfer coefficient attained by the processor. Prove that the simulation has achieved convergence…

1. Practical CFD models that are based on mathematical analysis of rayleigh Taylor waves:a) Kelvin–Helmholtz instability.b) Richtmyer–Meshkov instability.c) Plateau–Rayleigh instability. a) Kelvin–Helmholtz instability: The Kelvin–Helmholtz instability can occur when there is velocity shear in a single continuous fluid,…

CHT Analysis on Exhaust port Conjugate Heat Transfer (CHT) The Conjugate Heat Transfer (CHT) analysis type allows for the simulation of heat transfer between solid and fluid domains by exchanging thermal energy at the interfaces between them. Typical applications of this analysis type exist as, but are not limited to,…

Ahmed's body and its importance. in 1984, S.R. Ahmed introduced a car lie geometry in his research called “Some Salient Features of the Time-Averaged Ground Vehicle Wake”.  Later its known as Ahmed body. It has become a benchmark for aerodynamic simulation tools. The simple geometrical shape has a…

Introduction: Frequently, a walker who observes the water running behind bridge pillars can see vortices with opposite signs shed alternatively from either side of the obstacle. These vortices are called " Von Karman Street ". This regular pattern of vortices in the wake is called a Karman vortex street.  It creates…

  Analysis of a Mixing Tee using Ansys Fluent. Introduction: The Mixing Tee is a device used to mix the same fluids of two different temperature fluids. Generally in a mixing Tee, There will be Two inlets which may be perpendicular to each other and an outlet. Through the outlet, we will be getting an intermediate…

 Symmetry and Wedge boundary conditions in HP equation All units are in SI system unless specified. Working fluid Water Wedge angle 4 degrees Reynolds number 2100 Diameter D 0.02  Radius R 0.01 Dynamic viscosity of water at 25-degree Celcius - mu 0.0008900 Water density at 25 deg. C - rho 997 Temperature of water…

Simulation of Flow through a pipe in OpenFoam All units are in SI system unless specified. Working fluid Water Wedge angle 4 degrees Reynolds number 1500 Diameter D 0.02  Radius R 0.01 Dynamic viscosity of water at 25-degree Celcius - mu 0.0008900 Water density at 25 deg. C - rho 997 Temperature of water 25-degree…

Finite Volume Method (FVM) One important feature of finite volume schemes is their conservation properties. Since they are based on applying conservation principles over each small control volume, global conservation is also ensured. The method starts by dividing the flow domain into a number of small control volumes as…

Fluid flow through a backward faced step Introduction Here we will be analyisng the fluid flow through a 2 Dimensional backward faced stepped channel and will study the effect of grading factor on the solution. The above given diagram is our fluid domain and we have to model that in openFoam. Since near all the walls we…

Analysis of quasi-one-dimensional flow through C-D nozzle using MacCormack method Here we are going to simulate the isentropic flow through a quasi 1D subsonic-supersonic nozzle. We will be deriving both the conservation and non-conservation forms of the governing equations and solving them using the MacCormack's technique.…

Steady state & Transient 2D Heat Conduction Analysis using MATLAB   Here We have to do analysis of transient as well as steady state heat conduction equation. The boundary conditions are given as Temperature at Top Boundary = 600 K, Temperature at Bottom Boundary = 900 K, Temperature at Left Boundary = 400 K and…

Central and Skewed stencil-based derivation of second derivative having order of truncation error of the order of four by using Taylors table method.   Central Difference method To obtain a fourth order truncation error we have to take 4 points other than the point of interest. Two of them are at right and two of…