Week 3 - External flow simulation over an Ahmed body.

I WOULD LIKE TO COMPLETE THIS COURSE AND LIKE TO MOVE INTO NEXT COURSE, As I am already working

EXTERNAL FLOW SIMULATION OVER AN AHMED BODY Objective To simulate external flow over an ahmed body Theory Ahmed body Ahmed body is a 3D research model that represents a standard passenger car, It is developed to verify the CFD code (turbulence models). Physically Ahmed's body is built and a lot of experimental analysis…

FLOW OVER CYLINDER Objective Simulate flow over cylinder under steady and transient conditions and calculate the strouhal number at Reynolds number =100 To find the effect of Reynolds number on coefficient of drag and lift  Theory A stationary fluid exerts only normal pressure forces on the surface of a body immersed…

FINITE VOLUME METHOD Definition: It is one of the numerical technique employed by CFD to solve the governing equations which govern the fluid flow phenomenon and other fluid flow-associated phenomenon, by defining the value of the flow variables at the centroid of the control volume. Theory: Governing equations are obtained…

Validation studies of Symmetry BC vs Wedge BC in OpenFOAM vs Analytical H.P equation AIM:  To simulate flow through pipe in OpenFOAM, using symmetry boundary condition and wedge boundary condition separately. To compare the simulation result with Hagen–Poiseuille fully developed flow equation. THEORY: Haigen-Poiseuille…

Simulation of Flow through a pipe in OpenFoam AIM: To carry out transient simulation of fully developed laminar flow through the pipe using OpenFOAM and validation of simulation results with the Hagen- Poiseuille's equations for the fully developed flow. THEORY: Internal Flow and significance of Reynolds Number Fluid flow…

Simulation of a backward-facing step in OpenFOAM AIM: Transient simulation of incompressible-laminar-viscous flow through the backward-facing step geometry using OpenFOAM.  THEORY: Fluid is a substance that deforms continuously when subjected to tangential stress, it does not matter how small the tangential stress…

Solution 1D Super-sonic nozzle flow simulation using Macormack Method  AIM: To simulate the isentropic flow through a quasi 1D subsonic-supersonic nozzle by solving the conservation and non-conservation forms of the governing equations using MacCormack's technique in MATLAB. THEORY:  In a comprehensive manner,…

SOLVING STEADY AND UNSTEADY 2D HEAT CONDUCTION EQUATION USING ITERATIVE METHOD AIM: To solve the 2D heat conduction problem for the steady and unsteady state using Jacobi, gauss seidel, and successive over-relaxation iterative techniques. THEORY: Conduction is a mode of heat transfer, generally takes place in solids due…

MULTI BODY DYNAMICS SIMULATION OF IC ENGINE VALVE TRAIN AIM:  Run the motion analysis of the IC engine valve train using Solidworks for cam lift 3.5mm and 6mm. To obtain valve lift and contact forces between Cam and Push Rod Pushrod and Rocker Arm Rocker Arm and Valve  THEORY: A valve train is an assembly that…

Derive the following 4th order approximations of the second-order derivative Aim: To derive the 4th order approximation for the second-order derivative of a given function using following 3 schemes. central difference skewed right difference skewed left difference schemes. Theory: If ' X ' is a point(node) in space, at…

MULTI BODY DYNAMICS SIMULATION OF THE PISTON ASSEMBLY  AIM: To create 3D models of the piston-cylinder assembly according to the provided drawing. Assemble them according to 3 different configurations and conduct motion analysis to obtain the linear displacement of the piston.  THEORY  The single slider-crank…

FLOWBENCH SIMULATION AIM: To Simulate flow bench test. To calculate the "mass flow rate" at the inlet port of the cylinder To visualize the Fluid trajectories. THEORY Flowbench is an experimental setup used to evaluate the fluid flow characteristics within the component (valve, nozzle, airfilters etc) and it gives the…

MOTION ANALYSIS OF EPYCYCLIC GREAT TRAIN  AIM: To determine the pitch circle diameter of planetary gears using the given data. To conduct the motion analysis of EPYCYCLIC gear train, according to 3 given configuration and obtaining the angular velocity plots of the output  THEORY  A gear train having a relative…

SIMULATION OF INTERNAL GENEVA MECHANISM  AIM: To create the 3D model of the driver and driven wheel of the mechanism using the given 2d drawing  To find out the contact forces between driver and driven wheel, the angular displacement of the driven wheel by conducting motion analysis (@10rpm and 20 rpm) In motion…

DESIGN AND ANALYSIS OF CENTRIFUGAL PUMP Aim: To create a 3D model of centrifugal pump and obtaining a performance curve of the pump through CFD simulation using SOLIDWORKS Introduction: A Centrifugal pump is a mechanical device, which converts the low energy head of fluid to a higher energy head with the help of a rotating…

FLOW OVER AIRFOIL AIM: To simulate airflow over Airfoil NACA0017 with Angle of attack 0,2,4,6,8, and 10 using SOLIDWORKS. THEORY: Airfoil is a streamline shaped body designed to produce Aerodynamic force This aerodynamic force can be resolved into two components, one is drag force and another one is the lift force The…

FREQUENCY ANALYSIS OF ROTATING SHAFT OBJECTIVE: To carry out the frequency analysis of a rotating shaft. To determine its natural frequency and corresponding mode shapes.  INTRODUCTION:  Frequency analysis is performed to find out the natural frequency and corresponding mode shapes of the component. Natural frequency…

BUCKLING ANALYSIS OF STAND OBJECTIVE: To find the buckling factor of safety of a stand that holds the cyclonic separator. To find the stiffener effect on the buckling factor of safety. INTRODUCTION: Buckling is applicable only for slender columns applied with an axial compressive load, which deforms the beam in the lateral…

DATA ANALYSIS USING PYTHON     1.OBJECTIVE: To read, store and manipulate the data present in a particular file. A CONVERGE output file is given to achieve the following objectives. Data visualizer Compatibility check Basic performance calculation 2.CONVERGE OUTPUT FILE: It is a simulation result file obtained…

                                                   CURVE FIT  1.OBJECTIVE: To do a curve fitting for a specific heat v/s temperature data. 2.OBSERVATIONS: popt,pcov = cuve_fit(function,independent…

                          TRANSIENT BEHAVIOUR OF SIMPLE PENDULUM 1.OBJECTIVE: To solve the second-order ode, that represents the transient behavior of simple pendulum using python and creating an animation file of a simple pendulum using python, Imagemagick,…

                                                         OTTO CYCLE 1.OBJECTIVE: To create a PV plot of the engine process and to calculate thermal efficiency. 2.PROGRAM: The…

                       PROJECT 1: PARSING NASA THERMODYNAMIC DATA 1.OBJECTIVE:  To parse the thermodynamic data file and to calculate the thermodynamic properties of gas species present in that file. 2.INTRODUCTION:  The meaning of parsing is to split…

        OPTIMIZATION OF STALAGMITE FUNCTION USING GENETIC ALGORITHM 1. OBJECTIVE To determine the global maxima of the stalagmite function using a genetic algorithm. 2. GENETIC ALGORITHM The genetic algorithm \'GA\' is developed on the basis of Darwinian’s theory of survival of the fittest. It…

                   ANIMATION OF TRANSIENT BEHAVIOUR OF SIMPLE PENDULUM 1.INTRODUCTION: The second-order non-linear equation is derived to explain the transient behavior of a simple pendulum with damping using Newton\'s second law. where \'theta\' is angular displacement…