1. Descriiption and importance of ahmed body. The ahmed body was first created by S.R. Ahmed in his research \"some salient features of the time averaged ground vehicle wake\" in 1984. Since then it has become a benchmark for aerodynamic simulation tools. The simple geometrical shape has a length of 1.044 meters, height…

Code for solving 2D heat conduction equation of transient state using jacobi method implicit scheme: clc clear all close all % defining grids space nx = 10; ny = 10; %define Temperature(T) T = ones(nx,ny); %Boundary condition T(:,1)=400 T(1,:)=600 T(:,end)=800 T(end,:)=900 x = linspace(0,1,nx); dx = x(2)-x(1); y = linspace(0,1,ny);…

1. Conjugate heat transfer analysis :- The term conjugate heat transfer is used to describe processes which invlove variations of temperature within solids and fluids, due to thermal interaction between the solids and fluids. The exchange of the thermal energy between the two physical bodies is called study of heat transfer,…

1. Rayleigh  taylor instability  The rayleigh taylor instability is an instability between the interface of two fluids of different densities which occurs when the lighter fluid is pushing the heavier fluid and  both subjected to earths gravity. If a parcel of havier fluid displaced downwards with an equal…

Aim: To perform a simulation of flow in bacward facing step using openFoam software. Objective: 1) To generate mesh using BlockMeshdict file for three grading factors.  Case 1, grading factor = 0.2 Case 2, grading factor = 0.5 Case 3, grading factor = 0.8 2) To solve the case using icoFoam solver. 3) To plot the velocity…

Aim: To perform parametric study on gate valve model using ANSYS fluent. Objective: 1) To set gate disc lift distance as input parameter and to set mass flow rate as output parameter. 2) To calculate the flow coefficient and flow factor by increasing the lift of gate disc from 10% to 80%. Geometric model of gate valve…

Finite volume method : The FVM is a method of representing partial differential equations in the form of algebraic equation. In fvm, the formulation is based on the integral equations by applying conservation laws over a control volume. In finite difference method, the generation of mesh for complex geometry is very difficult…

Derivation of fourth order approximation of the second order:                                                                        …

Matlab code for solving 1D supersonic nozzle flow using macormack method: clear all close all clc % grid space n=31; x=linspace(0,3,n); dx=x(2)-x(1); gamma = 1.4; %function for non conserved form tic [rho,T,v,A,M,P,m,rho_th,T_th,P_th,M_th,rho_res,T_res,v_res,k_n] = supersonic_non_conserved(n,x,dx,gamma); time_for_non_conservative_solver…

Conjugate heat transfer analysis on graphics card :- The term conjugate heat transfer is used to describe processes which invlove variations of temperature within solids and fluids, due to thermal interaction between the solids and fluids. Efficiently combining heat transfer in fluids and solids is the key to designing…

Aim: To perform analysis of cyclone separator and calculate the separation efficiency and pressure drop. Objective:  1) To write few words about any four empirical models used to calculate cyclone separator efficiency. 2) To perform analysis on a given cyclone separator model by varying particle diameter from 1e-6…

Aim: To do steady state simulation for fluid flow over throttle body and discuss the results obtained. Introduction: The throttle valves are the devices that control the fluid flow by obstruction or constriction. The throttle valve is mainly used to monitor the  fuel or air supply into the IC engine. Thus with…

Aim: To setup case for transient state simulation for flow over throttle body in converge and to observe the fluid flow during the throttle valve rotation and discuss the results obtained. Introduction: The throttle valves are the devices that control the fluid flow by obstruction or constriction. The throttle valve is…

Aim: To perform a steady state simulation on given Prandtl-Mayer expansion fan model and discuss the results. Objective: 1) To discuss about the boundary conditions used for shock flow problems. 2) To discuss the physics behind the shock waves. 3) To observe and discuss the effects of SGS temperature value on cell count…

Aim: To perform a combustion simulation on given combustor model and to observe the variation of mass fraction of different species in the simulation. Objective: Part 1 1) Perform a combustion simulation and plot the variation of mass fraction of different species in the simulation using line probe at different location.…

Aim: To setup the case and perform conjugate heat transfer simulation for flow through the pipe with the help Converge CFD software. Objective: 1. To setup case for flow through the pipe whose inlet reynolds number is equal to 7000                  2. To perform a…

Aim: To do transient state simulation for flow in shock tube with the help of converge cfd software. Objective: 1.To setup a transient shock tube simulation using converge CFD software.                  2. To plot the pressure and temperature history in the entire…

Aim: To apply reynolds decomposition to Navier-stokes equations and come up with the expression for reynolds stress. Objective: 1. To derive an expression for reynold's stress by applying reynold's decompisition to NS equation.                   2. To explain the term…

Aim: To setup and perform full hydrodynamic simulation of port fuel injection engine using the converge CFD software. Objective:  To setup the full hydrodynamic case with the given inputs and boundary conditions. To find out the compression ratio of the given engine. To explain the need for wall heat transfer …

  Aim: To setup and perform a simulation of combustion process with open-w-piston and omega piston using converge cfd software. Objective: To create sector mesh of the open-w-piston and omega piston using their bowl profile. To characterize the emissions of open-w-piston engine and omega piston engine obtained…

Aim: To explore the GUI of GT suite and note down the settings of the intercooler tutorial. Objective: 1) To list down modules available with brief descroption. 2) To list down the following settings. Time control flag, Time step and control solution, Integrator/Solver type. 3) To explore the intercooler tutorial and note…

Aim: To run the tutorial '1cylSI-final.gtm' and discuss the results. Objective:  1) Case 1: To run the tutorial at 1800 rpm and list down important parameters such as Air flow rate, BMEP, BSFC, In-cylinder pressure. 2) Case 2: To run the tutorial at 3600 rpm and then increase the power by 10%. Project map…