Week 3 - External flow simulation over an Ahmed body.

AIM * To explore tutorial 9 which in details explains how to convert a existing model into a fast running model (FRM). * To build a FRM using FRM builder approach with     bore = 102 mm     Stroke = 115 mm     Compression ratio (CR) = 17     CI engine, Twin Scroll Turbine, GT controller…

What is meant by Turbocharger?? A turbocharger, (or turbo), is a turbine-driven forced induction device that increases an internal combustion engine’s efficiency and power output by forcing extra air into the combustion chamber. This improvement over a naturally aspirated engine’s power output is due to…

Basic Calibration of Single Cylinder CI Engine   Aim: To compare the differences in developing a single-cylinder SI and CI engine model in GT-Suite and determine the influence of the MFB parameter on the CI engine performance. Objective: 1.Compare SI vs CI and list down differences (assignment no 2-SI) 2.Comments…

A spark-ignition engine (SI engine) is an internal Combustion engine, generally a petrol engine, where the combustion process of the air-fuel mixture is ignited by a spark from a spark plug. This is in contrast to compression-ignition engines, typically diesel engines, where the heat generated…

1. Explore the GUI of GT SUITE and list down modules available with brief description: GT-SUITE is the industry-leading simulation tool with capabilities and libraries aimed at a wide variety of applications and industries. It offers engineers functionalities ranging from fast concept design to detailed system or sub-system/component…

\documentclass{article} % Language setting% Replace `english' with e.g. `spanish' to change the document language\usepackage[english]{babel} % Set page size and margins% Replace `letterpaper' with`a4paper' for UK/EU standard size\usepackage[letterpaper,top=2cm,bottom=2cm,left=3cm,right=3cm,marginparwidth=1.75cm]{geometry}…

Aim :- Creating a custom IOObject in Visual Studio Code created file using latex \documentclass{article}\usepackage[utf8]{inputenc} \usepackage{graphicx} \begin{document} \title{Creating a custom IOObject using Visual studio code}\author{prajwal PR}\date{30 november 2022}\maketitle \section{Introduction}In this study,…

Adding temperature equation to icoFoam solver: Solver setup: 1. IcoFoam solver is copied from $FOAM_SOLVERS/incompressible folder to $FOAM_RUN. The folder is renamed to icoTempFoam. icoFoam.C file is renamed to icoTempFoam.cpp and Make/files is updated for this change as shown below to create the executable named icoTempFoam…

Aim: To write a code in Matlab to parse the NASA Thermodynamic data file and then calculate the Thermodynamic properties of various gas species. Objective : a.To write a function that extract the 14 coefficient and calculate the enthalpy,entropy and specific heat in the Nasa thermodynamic datafile "Thermo.dat". b.To…

Aim :  To create  a Basic program that state for the Ranking cylce simulator using the Matlab. Objective :  To develop basic program that calculate state point  to adddthe thermodynamic relation to get the point in between state variables  To plot ranking cycle on Ts  and Hs curve Theory…

Aim :To calculate the global maixma of a stalagmite function using matlab Theroy : The global maxima of a "stalagmite function" can be obtained using "genetic algorith" in matlab Introduction The genetic algorithm (GA), developed by John Holland and his collaborators in the 1960s and 1970s (Holland,…

 Solving second order ODEs. Aim: To slove second order ordinary order Ordinary Differential Equation that describes the position of the "ball" w.r.t time.  (simple pendulam). Objective: ODE represents the equation of motion of a simple pendulum with damping. Theory:  The period of a pendulum…

%program for 2d Robotic Arm Challenge clear all close all clc %lenght of arms are intilized L1=1; L2=0.5; %angle of movement of each aram with repect to x-axis theta1 = linspace(1,90,20); theta2 = linspace(1,90,20); %co-ordinates for the start point ct=1; for i=1:length(theta1) THETA1 = theta1(i); for j = 1:length(theta2)…

Objective : To Identifying & cleanup all the topological errors in the given Tesla Cyber Truck Car model. To create a surface mesh. To Create a wind tunnel around Tesla Cyber Truck Car . To create a volumetric mesh to perform an external flow CFD analysis simulation.   step no-1 :- importing the…

Aim:  To understand the concept of SURFACE WRAP. Take away:  Cleaning up the geometry. Using tool - MERGE. Using tool - SURFACE WRAP. STEP NO1:- CLEANING UP THE GEOMETRIES (REMOVEING UNWANTED ITEMS ) 1) ENGINE  imported to work beanch to geometry clean up. unwanted surface are removed and single cons are…

AIM:- To Perform CFD Meshing for BMW car. OBJECTIVE:-           For the given model, check and solve all geometrical errors on half portion and Assign appropriate PIDs. Perform meshing with the given Target length and element Quality criteria. After meshing the half model, Do symmetry…

Aim: The goal here is to refine the geometry and perform surface and volume mesh. initial model with errors  from below images we can se that sum surface are missing  here we can observe that so many single cons are present this means some surface are missing, we need to create a mssing surface. to create this…

Aim: Surface meshing of pressure valve with different target length. Target length = 1mm, 3 mm and 5 mm (i.e. 3 cases) Element type = Tria Procedure Topo-Cleanup: The first thing need to be done is to check for single cons and triple cons in the model. Sinle cons are cons that are shared with one surface only which…

Aim: To perform state-state heat transfer analysis on a graphics card (GPU) Theory: The Graphic card is responsible for rendering an image to your monitor, and it does this by converting data into a signal your monitor can understand. The better your Graphic card the better and smoother an image can be produced.…

l. OBJECTIVES 1. Simulate the process of combustion on a model using a mixture of fuel and air. 2. Plot the variation of the mass fraction of different species in the simulation using line probes at different location of the model.   ll. INTRODUCTION 1. COMBUSTION Combustion is defined as achemical reaction…

Objectives: To define the Ahmed body and its importance. To Simulate flow over the Ahmed body. To perform the grid dependency test and post process the results  Describe Ahmed's body and its importance. The Ahmed body is a simplified car body used in the automotive field to study the impact of the flow pattern on…

Aim: To perform a parametric study on Gate Valve using steady-state simulation by raising the disc of the valve from 20,30,40,50,60mm. Objective:  Obtain the mass flow rates at the outlet for each design point. Calculate the flow coefficient and flow factor for each opening and plot the graph. Discuss the results…

Aim: To perform analysis on cyclone separator and calculate the separation efficiency and pressure drop.   Theory:- Cyclones are devices that employ a centrifugal force generated by a spinning gas stream to separate particles from the gas. Their simple design, low cost capital and maintenance-free operation…

Aim : To Perform the Rayleigh Taylor instability simulation for 2 different mesh sizes with the base mesh being 0.5 mm.  Rayleigh-Taylor Instability : In Multiphase flow, the dynamic variables like the velocity, viscosity, pressure and density are generally used to explain the movement of fluids under the…

Aim : To perform conjucate heat transfer analysis on exhaust port.   Introduction :Conjugate Heat Transfer (CHT) : Thermal interaction between the fluid and the solid region it can be either natural convection or forced convection. In solid region we are simulating the heat conduction. The heat conduction…

1. Flow over cylinder: In spite of extensive experimental and numerical studies almost over a century, flow around a circular cylinder still remains a challenging problem in fluid mechanics, where intensive investigations are continued even today to understand the complex unsteady dynamics of the cylinder wake flow. Cross-flow…

Description:  Mixing tee is a flow control devices.It mixes the two different fluid stream into a combined fluid stream.In has two inlets and one outlet.In this two inlets, one is located along the X axis and the other is located along the Y axis.The outlet is located along the X axis. Formula: momentum ratio = velocity…

step1:- at first we have copied a icoFoam solver from the appication folder to run folder by running thye command  cp -r incompressible/icoFoam/  step2:- we have renamed the solver as scalarFoam. in that we have files called createFields.H/make/and we have renamed the icofoam.c file as scalarFoam.c  step3:-…

theory: :- in non ideal fluid dynamics, hagen-poiseullie equation is a physical law that gives pressure drop in an incompressible and newtonian fluid in a laminar flow through a long cylinder pipe of constent cross section  the below blockMeshDict.file is obtained by cpoying and editing the blockmeshdict file from…

popular discretization approaches in CFD finite difference method  finite volume method  finite element method    finite volume method :- finite it is the numerical tool that is borrowed from calculus of variation. there are lot of types of FEM like point collocation method etc. here they assume some…

1)program for solveing the 1-D super sonic nozzel flow using mackormac method (non-conservative form) close all clear all clc n=30; L=3; x=linspace(0,L,n); dx=x(2)-x(1); gamma=1.4; rho=1-0.3146*x; T=1-0.2314*x; a=1+2.2*(x-1.5).^2; v=(0.1+1.09*x).*T.^0.5; m=v./(T.^0.5); mfr=rho.*a.*v; p=rho.*T; %area %time step nt=1400;…

1)study state solver  clear all close all clc %initials l=1;%length of domin nx=100; ny=nx; x=linspace(0,l,nx); dx=x(2)-x(1); y=linspace(0,l,ny); dy=y(2)-y(1); %temperature values \ temperature matrix t = 300*ones(ny,nx); t(:,1)=400;% temperature to left t(1,:)=600;% temperature at top t(:,end)=800;% temperature to…

The values of co-eff a,b,c,d,e,g for central 4th order approximation,right skewed and left skewed is obtained by taylers table close all clear all clc %function for 4th order approx useing second order derivative %given function f(x) = exp(x)*cos(x) x=pi/3; %analytical_derivative analytical_derivative = -2*exp(x)*sin(x);…