Week 8 - Simulation of a backward facing step in OpenFOAM

Aim: Simulation of Prandtl Meyer shock flow problem using Converge-CFD and post-process the results.Objectives: literature search on what BC's are typically used for shock flow problemsWhat is a shock wave.Effect of SGS parameter on shock location.Introduction:Shock Flow boundary conditions:Boundary conditions (BCs)…

Aim: To perform full hydro case set up simulation on PFI engine by using Converge-CFD and post-process the results.Simulation parameters: Engine Geometric ParametersBore =0.086 mStroke = 0.09 mConnecting rod length = 0.18 mRPM = 3000Run parametersSimulation mode: No HydroSimulation time parametersStart time : -520…

Aim: To perform surface preparation and boundary flagging (PFI) to the given IC engine model by using Converge-CFD.Objectives:  perform surface preparation and Boundary flagging to the given modelsetting up the no hydro case set up.show the animation of mesh by showing the valves and piston should move according…

1. Describe Ahmed's body and its importance. The Ahmed body is a simplified vehicle model. The airflow around the Ahmed body captures the essential flow features around an automobile and was first defined and characterized in the experimental work of Ahmed. Although it has a very simple shape, Ahmed body allows…

AIM: To calculate the total and static pressures and find the error in percentage for velocity to the given pitot tube model by considering the following parameters. Velocity(m/s)   Gauge Pressure (Pa) 240 -2817 100 33287 62 65780 Introduction: pitot tube: A pitot tube or a pitot probe is a flow measurement…

Aim: To performs a 3D simulation and explain the recirculation region using velocity vectors to the given model by Consider the flow direction of air, the ball is traveling opposite to it at 60m/s. Introduction:  Reynolds Number:   The ratio of inertia force to viscous force is called as Reynolds…

AIM: To Simulate the motion of blades in a generic turbomachinery component using an unsteady approach. Objectives:  Assume blade rotation at 300rpm Choose an appropriate time step for the simulation and generate an animation file for the rotation. Procedure: Read the mesh into the Fluent Setup. Imported the…

AIM: To understand the concept of Model Moving Zones and perform simulate Rotary motion for the given model and plot the velocity profile of the fluid motion. Introduction: There are two approaches to model rotary motion: Moving Reference frame. Moving Mesh approach. Moving Reference frame (MRF) : The MRF technique…

AIM: To stimulate the convergence_diverging nozzle by using ANSYS Fluent and plot the results. Geometry: Objectives: The pressure, velocity and temperature variations across the domain The variation of Mach number across the domain and at what distance from the inlet does the flow become supersonic. Boundary Conditions:…

Project 3: To solve the incompressible flow equations for mass and momentum by adding a temperature dictionary to the icoFoam solver. -- The following Latex code is the report of the Project_3. And Latex pdf file is also attached in the following link. Latex Code:-   \documentclass{article} \usepackage[utf8]{inputenc}…

\documentclass{article} \usepackage[utf8]{inputenc} \usepackage{graphicx}   \title{Creating a custom IOObject using Visual Studio code} \author{Pavan Kumar} \date{}   \begin{document}   \maketitle \newpage \section{Introduction} In this article, the total pressure field $p_total$ is the contribution of the…

AIM: Use the icoFoam solver to create your own solver - scalarFoam. Description:  Solver Name: icoFoam  Directory: applications/solvers/incompressible/icoFoam The icoFoam is transient solver for incompressible and laminar flows. It solves the Navier-Stokes equation using the PISO(Pressure Iimplicit…

Here, first I copied the cavity problem from $FOAM_TUTORIALS/incompressible/icoFoam into my run folder. Here from the icoFoam/cavity/cavity folder i just copied the constant folder and system folder into my run folder. Then renamed the transportProperties file into thermalProperties fiile by usnig mv command as shown in…

 Derive the expression for the ∂f/∂x for a forward difference of second order. To derive the expression for a forward difference of second order of ∂f/∂x by using Taylor's series expansion. We know that the Taylor's series expansion for a function f(x) about a point x is  `f(x+h) = f(x) + h * (∂f) / (∂x) + (h^2/(2!)) *…

Copy the solver DPMFoam from the lagrangian library ( $FOAM_SOLVERS ) into your run folder ( $FOAM_RUN ) (use visual studio) Use wmake libso to compile the shared library associated with this, after making the appropriate changes Where is the resulting .so file found? (Attach image of the shared object file location) Write…

Aim: To stimulate an incompressible-laminar-viscous flow through the backward facing step geometry in OpenFoam. Objectives: In this challenge, you are going to simulate an incompressible-laminar-viscous flow through the backward facing step geometry. You should perform a transient simulation. The solver can be chosen based…

Aim: Stimulation of a one-dimensional super-sonic nozzle flow simulation using Maccormack method.  Objective: To simulate the isentropic flow through a quasi 1D subsonic-supersonic nozzle by deriving both the conservation and non-conservation forms of the governing equations and solving them using Maccormack's technique.…

Aim: Solve the 2D heat conduction equation by using the point iterative techniques. Objectives: To solve the 2D heat conduction equation by using the point iterative techniques such as  Jacobi Gauss-seidel Successive over-relaxation The Boundary conditions for the problem are as follows; Top Boundary = 600 K Bottom Boundary…

i) Derive the following 4th order approximations of the second-order derivative Central difference, skewed right-sided difference, Skewed left-sided difference by using Taylor table method. Objective: To evaluate the second-order derivative of the analytical function f(x)= exp(x)*cos(x) using fourth order approximation.…

Aim:- To perform analysis on cyclone separator and calculate the separation efficiency and pressure drop.  Objective:- To write a few words about any four empirical models used to calculate the cyclone separator efficiency.  To perform an analysis on a given cyclone separator model by varying the particle…

AIM:  To Perform a steady-state conjugate heat transfer analysis on a model of a graphics card by using appropriate materials of the simulation. PROCEDURE: Spaceclaim Geometry: Open the Spaceclaim tool and import the given downloaded Graphics card model.Graphics card Geomentry: Fins Base: Processor: Base:…

AIM: To perform the Rayleigh Taylor instability simulation for 2 different mesh sizes with the base mesh being 0.5 mm. Compare the results. THEORY:  Rayleigh–Taylor instability: The Rayleigh–Taylor instability, or RT instability is an instability of an interface between two fluids of different densities…

Conjugate Heat Transfer:- Conjugate Heat Transfer analysis describes the heat transfer between the solid body and the fluid flow inside the soild or over the solid body in a mathematical form, that requires the temperature distribution and rate of heat flux at the interface and that results to calculates heat transfer…

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Simulate the flow over a cylinder  AIM: Simulate the flow over a cylinder and explain the phenomenon of Karman vortex street at various Reynolds numbers. Theory: Reynolds number is a dimensionless quantity that is used to determine the type of flow pattern as laminar or turbulent while flowing…

                                                                                                                            Steady-state stimulation on a Mixing Tee AIM: To perform Steady-state stimulation on a Mixing Tee of two different versions and compare the mixing effectiveness by using k-epsilon and k-omega SST…

AIM: To solve all geometrical errors and perform meshing with the suitable Target length and element Quality criteria. PROCEDURE:  First, open the given model file into the ANSA GUI. Here, we observe that all the cons are single cons, so apply TOPO to the entire model. Then that single cons turns into…

AIM: To perform the geometrical errors and delete surfaces which are unwanted for Surface wrap to the given three models, then merge all the models and perform surface wrap of target length 3mm. PROCEDURE: First, open the given engine model into the GUI, for our convenience turn on the PID mode. Here, first we should make…

AIM: To check and solve all geometrical errors on half portion and Assign appropriate PIDs to the given model and Perform meshing with the given Target length and element Quality criteria, After meshing the half model, Do symmetry to the other side, then create a wind tunnel to the model. PROCEDURE:  First, load the model…

AIM: To check the geometrical errors to make appropriate volumes to the given model (Turbocharger) and perform surfaca mesh with given Target length and Perform Volumetric mesh to the given model. PROCEDURE: First, run the ANSA software and open the downloded ANSA file into it. Then check the geometrical…

AIM : To mesh the given Valve model by three different Target length i.e..., 1mm, 3mm, 5mm and Conclude by observing all the three cases. PROCEDURE :  Run the ANSA sofware and load the downloaded model file into it. Then, Check the Geometric errors by using Check option i.e..., (check --> Geomentry -->)…