Week 3 - External flow simulation over an Ahmed body.

AIM To perform the steady-state conjugate heat transfer analysis on the given model of a graphics card. OBJECTIVES: Conduct the simulation, adjusting the velocity within the range of 1 m/s to 5 m/s for a minimum of three different velocities, and analyze the outcomes. Determine the peak temperature and heat transfer coefficient…

AIM:  To perform external flow simulation over an Ahmed body. OBJECTIVE: Outline Ahmed's physique and its significance. Elaborate on the cause of negative pressure in the wake region, accompanied by a clear vector plot delineating the wake region. Discuss the importance of the separation point. Present velocity and…

AIM: To conduct a simulation of the flow over a cylinder to elucidate the Karman vortex street phenomenon. PART-I: To simulate the flow in both steady and unsteady cases, and compute the Strouhal Number for Re=100. PART-II: To calculate the coefficients of drag and lift for a cylinder at Reynolds numbers of 10, 100, 1000,…

AIM: To perform steady-state simulations to evaluate mixing efficiency when Hot inlet temperature: 36°C, Cold inlet: 19°C. To compare k-epsilon and k-omega SST models initially and select the most suitable model for subsequent simulations. To run simulations for specified velocity and momentum ratios. To compare…

AIM: Conducting a Rayleigh Taylor Computational Fluid Dynamics (CFD) simulation. OBJECTIVES: Delve into various CFD models employed to address Rayleigh Taylor Instability problems, elucidating their theoretical underpinnings and practical applications. Conduct a Rayleigh Taylor instability analysis utilizing the Volume…

AIM: The primary focus of the objectives lies in conducting a steady-state Conjugate Heat Transfer (CHT) analysis on the exhaust port, considering an inlet velocity of 5 m/s.   OBJECTIVE: Provide a succinct explanation of the applications and significance of Conjugate Heat Transfer (CHT) analysis. Ensure the alignment…

AIM: The objective of this study is to investigate the influence of the wedge angle and boundary conditions on the simulation of axisymmetric laminar flow within a cylindrical pipe. THEORETICAL INTRODUCTION: The image depicts two regions in a pipe: the hydrodynamic entrance region, where flow develops a velocity profile…

The Finite Volume Method (FVM): It is a popular numerical technique used primarily for the simulation of fluid flow and heat transfer. It is widely used in the field of computational fluid dynamics (CFD). Here's a simplified explanation of how it works: Domain Discretization: The physical domain of the problem is divided…

AIM: The aim of this study is to simulate an axi-symmetric flow within a constant cross-section pipe by implementing a wedge boundary condition.   OBJECTIVES: The primary objectives of this project are as follows: Simulate an axi-symmetric flow within a constant cross-section pipe at an inlet Reynolds number of 2100…

Courant-Friedrichs-Lewy (CFL): It is an essential requirement when solving Partial Differential Equations (PDEs) through numerical methods. This condition emerges during the numerical analysis of explicit time integration schemes. The Courant-Friedrichs-Lewy (CFL) number serves as a critical indicator of instability within…

1. AIM: To perform steady-state analysis and transient state analysis by solving the 2D heat conduction equation using point iterative techniques, with the following boundary conditions: Top Boundary = 600 K Bottom Boundary = 900 K Left Boundary = 400 K Right Boundary = 800 K The implementation will include the following…

General Taylor Series: The Taylor series for a function f(x) centered at a point a is typically represented as: `f(x)=f(a)+f′(a)(x−a)+f′′(a)​(x−a)^2/(2!)+f′′′(a)​(x−a)^3/(3!)+…` The terms in the series are generated using the derivatives of f(x) evaluated at…

 About ANSA :  ANSA is a CAE tool for Finite Element Analysis and CFD Analysis used in the automotive industry.  ANSA maintains the association between CAD geometry and the FE mesh. It use has different tools that are present in different modules.Some are listed below.   1. TOPO…

TOOLS USED: 1. TOPO toolbar: Helps in fixing the topology of the model. Insert:It creates hot points on cons or 3d curves. Topo: This function automatically creates topological conditions between selected adjacent CONS. Project: It defines a new hot points or new cons as the projection of existing hotpoints…

Collapsed CONS: Those cons that has its start and end points coincident. To fix such cons, release the hot points where the cons are coincident and apply topo. Unchecked Surfaces: These are the surfaces that fail to show in shadow mode.Such, Faces usually are thin needle shaped Faces or Faces that have bad Surface…

TOOLS USED: 1. TOPO toolbar: Helps in fixing the topology of the model. Insert:It creates hot points on cons or 3d curves. Topo: This function automatically creates topological conditions between selected adjacent CONS. Project: It defines a new hot points or new cons as the projection of existing hotpoints or cons. Parametrical:…

Loop: Helps to select multiple cons connected to each other at a time. New Face Option: Can create new surfaces. Existing Surf, Plannar, Fitted, Coons are used to rectify topology as per requirements. Check manager>Geometry check: Helps to check the errors in the model and can help to fix some of the errors in the model.…

Mass spring damper system:  A spring-mass-damper system is a mechanical system that consists of a mass connected to a spring and a damper. It is commonly used in engineering to model various physical systems, such as the suspension in vehicles, buildings subjected to earthquakes, or vibrating structures. General equation:…

OBJECTIVE: To generate the interactive plot for the interpolated data and store them in a text filefor the given VI.xlsx file.  File name: Project.m Output txt file: Proj.txt % V vs I A=xlsread('VI.xlsx'); %read the excel file %A(row,col) V=A(:,1); % COLUMN for VOLTAGE I=A(:,2); % COLUMN for CURRENT V1=-17.3:0.1:0.9;…