Week 3 - External flow simulation over an Ahmed body.

Aim: To run a simulation to analyze Conjugate Heat transfer in the Exhaust port. Objective: 1. To understand why and where a CHT analysis is used. 2. Run the CHT simulation using different turbulence models and justify the results.   Introduction: Conjugate Heat Transfer (CHT): The Conjugate Heat Transfer (CHT) analysis…

Aim: To perform the external flow simulation over Ahmed's body. Objective: To determine the aerodynamic forces on the Ahmed body such as drag and lift coefficient.  To perform the grid dependency test. Introduction:  Ahmed body:   The Ahmed body is a generic car body (a simplified vehicle model). The…

Aim: To perform the external flow simulation over Ahmed's body. Objective: To determine the aerodynamic forces on the Ahmed body such as drag and lift coefficient.  To perform the grid dependency test. Introduction:  Ahmed body:   The Ahmed body is a generic car body (a simplified vehicle model). The airflow around the…

Aim: To write a code that reads the Engine Output parameter file and perform the following objectives. Objective: To read the data from a given data file. To take the file name as input from the user and check whether the file is present or not. To plot a graph between 2 parameters given by the user as input. To do basic…

Aim: To Simulate the flow over a cylinder and explain the phenomenon of Karman vortex street.   Objective: PART-I Simulate the flow with the steady and unsteady case and calculate the Strouhal Number for Re= 100.  PART-II Calculate the coefficient of drag and lift over a cylinder by setting the Reynolds number…

Aim: To write code in Python to perform curve fitting for the given data and to determine the best fit. Objectives: To fit a linear and cubic polynomial for a given data and to get the best fit out of the two fits To get a perfect curve fit Theory: Curve fitting is the way we model or represent a data spread…

Objective:   Write a program to simulate the transient behavior of a simple pendulum and create an animation of it\'s motion. Theory: A function was defined for calculating the angular displacement and velocity of the simple pendulum at different time intervals. The second-order differential equation defining…

AIM:  To write a program in Python to solve an Otto cycle and make plots for it. OBJECTIVE : To solve and find out different state variables in the Otto cycle and plot its p-V diagram. To calculate the thermal efficiency of the given Otto cycle. Theory: Thermodynamic cycles are the most fundamental part…

Mixing Tee Simulation AIM:  To set up steady-state simulations to compare the mixing effectiveness when the hot inlet temperature is 36 degree Celsius & the Cold inlet is at 19 degree celsius creating two versions of the mixing tee. OBJECTIVE:  To set up steady-state simulations to compare the mixing…

Aim:  The aim of this project is to surface wrap an automotive powertrain. The CAD models to which can be found here are Engine, Gearbox and Transmission. Procedure: Upload the engine ANSA file onto ANSA, first we perform topo-clean up on the engine. The engine file has a lot of excess parts which are not necessary…

Aim: To write a code in MATLAB to optimise the stalagmite function and find the global maxima of the function. Theory: GENETIC ALGORITHM: The genetic algorithm is a method for solving both constrained and unconstrained optimization problems that are based on natural selection, the process that drives biological…

Aim: To check and solve all the geometrical errors on and assign appropriate PIDs and also to deploy the surface mesh on the car surface. Procedure: Import the CAD model. To import the CAD model we follow the below steps... Go to file -> open -> browse the location of the CAD model -> select it and click on open.…

Aim: To solve an ordinary differential equation (ODE)  and use the calculated information to animate the motion of the pendulum. Code: %program to simulate the transient behaviour of a simple pendulum clear all close all clc %inputs b = 0.05; % damping coefficient g = 9.81; % gravity (m/s^2) l = 1; % length…

Aim: To write a program to stimulate the forward kinematics of a 2R Robotic Arm in Matlab. Matlab Code: % Program for 2R Robotic Arm Challenge clear all close all clc %Inputs l1 = 1; l2 = 0.5; theta1 = linspace(0,90,12); theta2 = linspace(0,90,12); ct = 1; for i = 1:length(theta1) THETA1 = theta1(i); for j = 1:length(theta2)…

Aim: To eliminate the topological errors that are acquired in the given Turbo Charger CAD model and perform surface and volumetric meshes with different mesh lengths for different components and do the required actions for those meshes.   Procedure: 1) Eliminating Topological Errors Clear the errors which are acquired…

Aim: To perform the topology cleanup and to check the geometrical errors. Tools: 1) Topo>Faces>New / Topo>Cons>Fill Holes            This tool is used for the topological cleanup of the geometry            2) PID Tool      …