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Simulation of steady and unsteady flow over a cylinder

Aim: To simulate the flow over a cylinder and explain the phenomenon of Karman vortex street.   Problem statement: PART-I Simulate the flow with the steady and unsteady case and calculate the Strouhal Number for Re=100.  PART-II Calculate the coefficient of drag and lift over a cylinder by setting the Reynolds…

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    Read more Projects by Shaloy Elshan Lewis (30)

    Photo Realistic Rendering

    Objective:

    MODELING AND RENDERING OF THE AMERICAN CHOPPER   Objective:3D modeling of all American chopper parts and assemble them using SolidWorks to fully define the resultant assembly. Once the assembly is complete, render it using Photo view 360.   Introduction:The American chopper is designed and developed in a step-by-step…

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    06 Jun 2021 06:12 PM IST

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      Surface wrap of power-train assembly using ANSA

      Objective:

      Aim: To check for geometrical errors on the given individual components (engine, transmission, gearbox), and delete the unwanted surfaces. Then surface-wrap the engine, transmission, and gearbox assembly with a set target length using ANSA.    Problem statement: 1. Delete all the unwanted components present in…

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      17 Dec 2020 08:16 AM IST

      • ANSA
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      Generating a CFD mesh over the Tesla Cybertruck model to perform external aerodynamic simulations

      Objective:

      Aim: To check and solve all the geometrical errors on the given Tesla Cybertruck geometry and assign appropriate Property IDs (PIDs). Then, deploy the surface mesh for different parts (PIDs) with appropriate target lengths and element quality criteria. Then enclose the car model in a virtual wind tunnel, and deploy CFD…

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      17 Dec 2020 08:13 AM IST

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      Generating a CFD mesh over the BMW M6 model to perform external aerodynamic simulations

      Objective:

      Aim: To check and solve all the geometrical errors on the given BMW M6 car geometry and assign appropriate Property IDs (PIDs). Then, deploy the surface mesh for different parts (PIDs) with the given target length and element quality criteria using ANSA. Then enclose the car model in a virtual wind tunnel, and deploy CFD…

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      17 Dec 2020 08:12 AM IST

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      Topological cleanup, surface, and volume mesh generation on the turbocharger assembly using ANSA

      Objective:

      Aim: 1. To check geometrical errors and perform topology cleanup on the given turbocharger geometry to create appropriate volumes. 2. Assign appropriate Property IDs (PIDs) to different components of the model and deploy surface mesh on it with the given target lengths. 3. Deploy volumetric mesh on the required volumes…

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      17 Dec 2020 08:09 AM IST

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      Topological cleanup and surface mesh generation on the valve assembly using ANSA

      Objective:

      Aim: To check for the geometrical errors and perform topology cleanup on the given geometry using ANSA, and then mesh it for different target lengths and draw suitable conclusions from the results obtained in each case.   Problem statement: 1. Check the geometrical errors and perform topology cleanup on the given…

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      17 Dec 2020 08:07 AM IST

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      Simulation of flow over a FSAE Car using Converge CFD

      Objective:

      Aim: To simulate the flow over the given geometry of the FSAE car, and find the aerodynamic properties (downforce and drag) at different car parts and compare the results obtained for different cases.    Problem statement: To perform flow a simulation over the given geometry of the FSAE car for two cases given…

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      17 Dec 2020 08:02 AM IST

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        Modeling and simulation of flow over an Ahmed body

        Objective:

        Aim: To simulate the flow over the Ahmed body having a slope of 35 degrees at the rear and compare the results obtained with the experimental data, and draw suitable conclusions.   Theory: The Ahmed body is a generic car body (a simplified vehicle model). The airflow around the Ahmed body captures the essential flow…

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        17 Dec 2020 08:00 AM IST

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        Simulation of flow over a NACA 2412 airfoil at different angle of attacks

        Objective:

        Aim: To compare the results obtained at a particular angle of attack using different turbulence models with experimental data and choose the better turbulence model to solve the problem for the remaining angle of attacks. To simulate the flow over NACA 2412 airfoil and find the coefficient of lift and drag at different…

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        17 Dec 2020 07:59 AM IST

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        Simulation of shock produced in a shock tube using Converge CFD

        Objective:

        Aim: To set up a shock tube with a high-pressure differential between the two regions (low and high-pressure region filled with O2 and N2 gas respectively) and simulate the formation of shocks as a result of rupture of the diaphragm that separates these two regions from each other.   Theory: The shock tube is…

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        17 Dec 2020 07:55 AM IST

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          Conjugate Heat Transfer (CHT) simulation using Converge CFD

          Objective:

          Aim: To perform conjugate heat transfer(CHT) analysis on an aluminum pipe of circular cross-section using super-cycle modeling and simulate the effect of changing the time length of each cycle stage and draw suitable conclusions. To perform the CHT analysis using a baseline mesh and then performing the grid independence…

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          17 Dec 2020 07:53 AM IST

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          Simulation of Prandtl Meyer Shock using Converge CFD

          Objective:

          Aim: To simulate the Prandtl-Meyer shock wave (expansion fan) over a sharp edge for different values of sub-grid scale(SGS) criterion and draw suitable conclusions.   Theory: For solving the steady-state flow appropriate boundary conditions are needed. It is one of the required components of the mathematical model.…

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          17 Dec 2020 07:51 AM IST

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            Transient-state simulation of flow over a throttle body

            Objective:

            Aim: To perform a transient-state flow analysis over a throttle body and draw suitable conclusions.   Problem statement: To perform a transient-state analysis over a throttle body, wherein the throttle plate is deflecting with respect to time about an axis. The throttle deflection with respect to time is as follows…

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            17 Dec 2020 07:50 AM IST

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              Steady state simulation of flow over a throttle body

              Objective:

              Aim: To perform a steady-state flow analysis over a throttle body and draw suitable conclusions.   Theory: In a traditional spark-ignition gasoline engine, the throttle body is the part of the air intake system that controls the amount of air that flows into an engine's combustion chamber. It consists of a housing…

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              17 Dec 2020 07:49 AM IST

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                Simulation of flow over a backward facing step

                Objective:

                Aim: To simulate the turbulent flow of air in a backward-facing step for different base grid sizes and draw suitable conclusions   Theory: The separated flow generated as fluid passes over a backward-facing step is of interest for a variety of reasons. First, separated flows produced by an abrupt change in the geometry…

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                17 Dec 2020 07:49 AM IST

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                  Simulation of flow through a channel using CONVERGE CFD

                  Objective:

                  Aim: To simulate the flow of air through a 2D channel using Converge CFD.   Introduction: The laminar flow through a square channel is a very simple problem which can be a good problem to start with learning a new CFD software. In this problem, we are simulating a laminar flow through a 2D square channel for three…

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                  17 Dec 2020 07:48 AM IST

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                  Simulating combustion on an axi-symmetric geometry

                  Objective:

                  Aim: To perform a combustion simulation on the combustor model and plot the variation of the mass fraction of the different species’ in the simulation using line probes at different locations of the combustor. To add the water content in the fuel from 5% to 30% by mole and observe the effect of it on the results.…

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                  17 Dec 2020 07:47 AM IST

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                    Separation efficiency and pressure drop in a cyclone separator

                    Objective:

                    Aim:  To perform analysis on cyclone separator and calculate the separation efficiency and pressure drop.   Theory: Cyclone separators are separation devices that remove particulate matter from flue gases by using the principle of inertia. Cyclone separators are one of many air pollution control devices…

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                    17 Dec 2020 07:44 AM IST

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                      Parametric study on the gate valve

                      Objective:

                      Aim: To perform a parametric study on a gate valve at different valve opening settings.   Theory: Gate valves work by inserting a rectangular gate or wedge into the path of a flowing fluid. They are operated by a threaded stem which connects the actuator (generally a hand wheel or motor) to the stem of the gate.…

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                      17 Dec 2020 07:42 AM IST

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                        Conjugate Heat Transfer Analysis on a graphics card.

                        Objective:

                        Aim: To perform a steady-state conjugate heat transfer analysis on a model of a graphic card.   Pre-processing: The model of this graphic card consists of 3 main components, namely, base, processor, and the fins, each made up of the material steel, silicon, and copper respectively. The physical properties of each…

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                        17 Dec 2020 07:41 AM IST

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                          Simulation of Rayleigh-Taylor instability

                          Objective:

                          Aim: To perform Rayleigh Taylor instability simulation on a 2D multiphase setup.   Problem statements: To perform the Rayleigh Taylor instability simulation with water and air for 2 different mesh sizes with the base mesh being 0.5 mm. To perform the Rayleigh Taylor instability simulation with water and user-defined…

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                          17 Dec 2020 07:40 AM IST

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                          Conjugate heat transfer analysis on an exhaust port

                          Objective:

                          Aim: To perform a conjugate heat transfer analysis on an exhaust port and draw suitable conclusions from the results obtained.   Theory: Conjugate heat transfer analysis is generally used when there is a temperature variation during heating and cooling in the material due to the interaction between the solid and fluid…

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                          17 Dec 2020 07:38 AM IST

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                            Simulation of flow over an Ahmed Body using Ansys Fluent

                            Objective:

                            Aim: To simulate the flow of air around the Ahmed body using Ansys fluent and compare them with the standard results and draw conclusions.   Theory: The Ahmed body is a simplified car vehicle model. The exact solution for this model is already predetermined. This model is used to validate any now CFD code which is…

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                            17 Dec 2020 07:37 AM IST

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                            Simulation of steady and unsteady flow over a cylinder

                            Objective:

                            Aim: To simulate the flow over a cylinder and explain the phenomenon of Karman vortex street.   Problem statement: PART-I Simulate the flow with the steady and unsteady case and calculate the Strouhal Number for Re=100.  PART-II Calculate the coefficient of drag and lift over a cylinder by setting the Reynolds…

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                            17 Dec 2020 07:34 AM IST

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                              Simulation of mixing efficiency of air

                              Objective:

                              Aim: To set up steady-state simulations to compare the mixing effectiveness with hot inlet temperature 360C and the Cold inlet temperature 190C using the k-epsilon and k-omega SST model for the first case, and based on the judgment more suitable model is used for further cases.  Case 1 Short mixing tee with a hot…

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                              17 Dec 2020 07:28 AM IST

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                                Simulation of flow over a backward facing step

                                Objective:

                                Aim: To perform flow analysis through a given geometry on OpenFOAM, and draw conclusions. To find how the velocity magnitude profile change as a function of mesh grading factor, 0.2, 0.5, and 0.8 Measure the velocity profile at 0.085 m from the inlet of the geometry Compare velocity magnitude contours near the step region…

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                                17 Dec 2020 07:22 AM IST

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                                Simulation of Flow through a pipe

                                Objective:

                                Aim: Generation of blockMeshDict using the wedge boundary condition. Create the blockMeshDict file in MATLAB such that the mesh is automatically created for various wedge angle. Simulating the pipe flow in OpenFOAM using icoFoam solver. Post-process the velocity profile and shear stress and compare the simulation results…

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                                17 Dec 2020 07:21 AM IST

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                                Simulation of a 1D Super-sonic nozzle flow using Macormack Method

                                Objective:

                                Aim: To simulate the isentropic flow through a quasi 1D subsonic-supersonic nozzle and derive both the conservation and non-conservation forms of the governing equations and solve them using MacCormack's technique. Also, to determine the steady-state temperature distribution for the flow-field variables and investigate…

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                                17 Dec 2020 07:13 AM IST

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                                  Solving the steady and unsteady 2D heat conduction equations.

                                  Objective:

                                  Aim: To perform steady-state analysis & transient state analysis to solve the 2D heat conduction equation by using the point iterative techniques by implementing the following methods: 1. Jacobi method 2. Gauss-seidel method 3. Successive over-relaxation (SOR) method absolute error criteria = 1e-4   Assumptions:…

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                                  17 Dec 2020 07:01 AM IST

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                                    Taylor table method and Matlab code

                                    Objective:

                                    Aim: To derive the fourth-order approximation of second-order derivative using central difference, skewed right-sided, and skewed left-sided difference scheme. To prove that the skewed schemes are fourth-order accurate To write a program in MATLAB/Octave to evaluate the second-order derivative of the analytical function:…

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                                    17 Dec 2020 06:54 AM IST

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