Simulation Of Fluid Flow Over Ahmed Body

 Reynolds-averaged Navier–Stokes equations are time-averaged equations of motion for fluid flow used to describe turbulent flows. They are obtained by Reynolds decomposition whereby instantaneous quantities are split into time averaged terms and fluctuating terms. Reynolds stresses are nonlinear stresses imposed…

Aim: To study stabilty of ordinary differential equations and its effect on engineering simulations.   An ordinary differential equation(ODE) is an equation that involves ordinary derivatives of one or more functions of an independent variable. To solve an ODE implies to determine what function or functions…

  Objectives: To perform a combustion simulation on the combustor model and observe the mass fraction of different species across the volume. To add water into the fuel and observe its effect on the soot and NOx formation.   Here we are conducting a non-premixed combustion simulation in fluid phase. As we are…

Objectives:   To derive the 4th order approximations of second order derivatives using;  Central difference  Skewed right sided difference  Skewed left sided difference   1)  Fourth order approximation of second order derivative using central differencing :    Consider the numerical…

Objective: To simulate the flow air through a throttle body using CONVERGE Studio.   A throttle body is a device used as a valve to restrict or permit the flow of a desired amount of fluid through it. It is located between the air intake filter and the intake manifold in an engine. It regulates the amount of…

Aim:   To Simulate flow over a throttle body using Converge CFD.   A throttle body is a butterfly valve usually located between the air intake filter and the intake manifold in an engine. It regulates the amount of air going into the engine.  The amount of airflow into the engine cylinder depends…

Aim:  To setup conjugate heat transfer simulation of flow through a pipe using Converge CFD. Objectives:  To setup CHT simulation and confirm convergence through grid dependence test.  To observe effect of change in supercycle stage interval.   A conjugate heat transfer simulation is a simulation where…

 Aim: To run a Prandtl-Meyer shock problem using Converge CFD and post process the results using paraview. Objectives: To define Shock waves. To explain typical boundary conditions used for shock flow problems. To run a prandtl Meyer shock problem with CONVEGRE and study the effect of SGS criterion of CONERGE on shock…

Aim: To calculate Adiabatic flame temperature for a given fuel using python programming. Adiabatic Flame Temperature is a benchmark temperature for any combustion system. AFT is the highest temperature acheived when a fuel reacts with an oxidizer and approaches equilibrium by means of an adiabatic and isobaric process.…

Aim:  To run a transient shocktube simulation using CONVERGE CFD.  Shock tubes are devices used to replicate exposions and their effects on an object in small scales by subjecting the test object to direct blast waves. The blast waves are usually generated by the buildup of high pressures which cause diaphragm(s)…

Aim:  To study the effect of preheated air on combustion efficiency using python and cantera.    In a typical furnace, less than 50% of the heat generated is converted to useful heat. The rest of the heat is lost in many forms in which flue gas loss being the major loss and accounts for about 30% of the…

Aim:   To perform full-hydro simulation on a port fuel injection engine using CONVERGE and to post process the results using Paraview.  The full-hydro simulation was carried out on a PFI engine geometry for which errors on the surface had been already rectified and no-hydro simulation without any physical models…

       A gate valve is a valve that opens by lifting a barrier out of the path of the fluid. The gate valve operates when the disc inside the valve is lifted from the patch of flow and obstructs the flow of fluid when the disc returnsto its position. Gate valves are available in many options including…

AIM:- To perform analysis on cyclone separator and calculate the separation efficiency and pressure drop.   OBJECTIVE:- To perform an analysis on a given cyclone separator model by varying the particle diameter and to calculate the separation efficiency in each case. To perform an analysis on a …

Conjugate Heat Transfer Analysis on a graphics card: The objective of this project is to study and analyze the use of fins to maintain the temperature of a graphics processor within it's limits. A graphics card is a computor hardware responsible for rendering images to the monitor. It is required when smooth and high…

                                   Rayleigh-Taylor Instability:         The objective of this project is to get a clarity on the phenomenon of Rayleigh-Taylor instability by running simulations where two immiscible…

Conjugate Heat Transfer Analysis     Conjugate heat transfer or simply CHT is used to describe the combination of  heat transfer between solids and fluids. The exchange of thermal energy between solids and fluids are utilized in countless applications that involve heat-exchangers and hence making CHT analysis…

Fluid Flow Over Ahmed Body:   In this project, we examine the flow of air over the Ahmed body and check the velocity, pressure and force distribution over the body which will help us understand its significance in automobile industry. We also closely examine the wake region of the Ahmed body and its significance.…

Simulation of a 1D Super-sonic nozzle flow simulation using Macormack Method: The objective of this project is to write codes to solve the 1D supersonic nozzle flow equations using the Macormack Method. Supersonic flow of a fluid is the movement of the fluid at speeds greater than the speed of sound in the same fluid.…

Objective :  performe steady-state simulations on the mixing tee geometry with different inlet temperatures. Analyze the mixing efficiency for shorter and longer length pipe.   The Simulations are done for different cases, Short mixing tee with K-epsilon model, momentum ratio =2 Short mixing tee with K-omega…

  Symmetry vs Wedge equation in Pipe Flow simulation using OpenFoam: Objective: To create a matlab code to generate blockMeshDict file for openFoam with any given wedge angle. To compare simulation results of flow of a fluid through a pipe using symmetry and wedge boundary conditions in openFoam and also the results…

Simulation of Flow through a pipe in OpenFoam: Objective:  Simulate flow through a pipe section. Write code to generate BlockMeshDict file for any given pipe section wedge angle theta.   The fluid that is flowing through the pipe is considered to be water. Also, the pipe section wedge angle is assumed to be 5…

INTERPOLATION SCHEMES AND FLUX LIMITERS IN FINITE VOLUME METHOD : The finite volume is a method by which volume integrals in a partial differential equation that contain a divergence term are converted to surface integrals, using the divergence theorem. The terms in FVM are evaluated as fluxes at the surfaces of each…

AIM: For the following diagram, use the icoFOAM solver to simulate the flow through a backward facing step by creating multiple meshes and comparing the results obtained from each mesh.   WORK DONE: From the tutorials directory, cavity folder and its contents are copied to a folder in a seperate directory for editing…

Solving the steady and unsteady 2D heat conduction problem:  The two dimensional heat conduction equation is a partial differential equation that describes the distribution of temperature field in a given domain over time.  The equation is solved for the unsteady state and steady state conditions implicitly and…