External Aerodynamics of an Ahmed Body using Ansys Fluent

Aim: Port Fuel Injection SI Engine. Objectives: In this part of the projects, the Full-Hydrodynamic case will be set-up and the processes of SI Engine with respect to crank angles will be simulated. Multipoint fuel injection (MPI), also called port fuel injection (PFI), injects fuel into the intake ports just upstream…

  Aim: Analysis of 3D External Flow past a submarine   Objectives: For the given submarine geometry, you need to perform an external flow simulation in Ansys Fluent to analyze and study the essential phenomena/parameters. The simulation procedure is as follows;   Clean up the given submarine CAD model, look…

Emission characterization on a CAT3410 engine In order to reduce the emission from the IC Engines, one of the most important aspect to look at is the Piston bawl profile. In this Project we are comparing between Open_w and Omega bawl profile piston type to see which Piston is better in order to reduce emissions. The CAT3410…

Reynolds-averaged Navier–Stokes equations   Apply Reynold's decomposition to the NS equations and come up with the expression for Reynold's stress. Explain your understanding of the terms Reynold's stress What is turbulent viscosity? How is it different from molecular viscosity?   The Reynolds-averaged…

Exhaust Port Simulation Conjugate Heat Transfer and its Significance: The term conjugate heat transfer (CHT) is used to describe processes which involve variations of temperature within solids and fluids, due to thermal interaction between the solids and fluids. The exchange of thermal energy between the two physical bodies…

Objective: Study of icoFOAM solver to simulate the flow through a backward-facing step. You shall create different meshes and compare the results obtained from them. Specification The number of cells along the direction of flow = 200The number of cells along the y-direction for each block = 10Inlet Velocity is 1 m/sec.…

Flow over a backward-facing step Aim: Simulate the flow over a backward-facing step.  Objectives: Run the case for three different base mesh sizes dx = dy = dz =2e-3m dx = dy = dz =1.5e-3m dx = dy = dz =1.0e-3m Contents to be shown in the report: Show the mesh (i.e surface with edges) for all the 3 base mesh sizes…

Shock Tube Simulation: Objectives: Setup a transient shock tube simulation Plot the pressure and temperature history in the entire domain - Explain the result Plot the cell count as a function of time - Explain the result It is expected to show the mesh generation using ParaView. Also, create animation and upload it on…

Steady Vs Unsteady flow over a cylinder Objective: Simulate the flow over a cylinder and explain the phenomenon of Karman vortex street and study of the vortex sheddings.    PART-I Simulate the flow with the steady and unsteady case and calculate the Strouhal Number for Re= 100.  PART-II Calculate the coefficient…

    Simulation of Flow through a pipe in OpenFoam This project objective is to be able to accurately simulate the laminar incompressible flow through a pipe. Objective:  Write a Matlab program that takes an angle as input and generates a blockMesh file for the given angle. Angles to test 10,25,45                   …

      Simulation of Flow through a pipe in OpenFoam This project objective is to be able to accurately simulate the laminar incompressible flow through a pipe. This project will be broken into two different parts. This part of the project focused on the simulation set-up. This problem can be computationally…

OBJECTIVES: Implement both the conservative and non-conservative forms of the governing equations Perform grid dependence test Write separate functions for conservative and non-conservative forms Figure out the minimum number of cycles for which the simulation should be run in order for convergence Compare the normalized…

2D Heat Conduction challenge Steady-state analysis The 2D Transient equation: `dT/dt+alpha(d^2T/dx^2+d^2T/dy^2)=0` The Steady-state equation: `d^2T/dx^2+d^2T/dy^2=0` Assume that the domain is a unit square. Now assigning boundary conditions. Temperatures for steady-state T_L=400 -- Temp at the left boundary T_T=600 --…

Aim: Perform a Prandtl Meyer Expansion Simulation Objectives: Shock flow boundary conditions Do a literature search on what BC's are typically used for shock flow problems What is a shock wave? In your own words, describe the physics behind shock waves Effect of SGS parameter on shock location In the Prandtl Meyer shock…

Conjugate Heat Transfer Simulation Objective: Baseline configuration Setup a flow simulation through a pipe Inlet Reynolds number should be 7,000 HINT: Use the below formula to calculate velocity for corresponding value of REYNOLD NUMBER and give DIRICHLET BC for velocity at inlet and specify the value for velocity calculated…

Cyclone Separator Challenge 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…

Challenge on Gearbox Sloshing effect Aim: Analysis of the different fluids(lubricants) sloshing in a Gearbox at a different Immersion depth. Objectives: For this challenge, you have to perform the four simulations in the  Gearbox and then you have to compare the results among all the four cases. Part 1: 20% Immersion,…

Transient simulation of flow over a throttle body Aim: Set up and run the Transient simulation for flow over the throttle body. Objectives: Post process the results and show pressure and velocity contours. Show the mesh (i.e surface with edges) Show the plots for pressure, velocity, mass flow rate, and total cell count.…

Steady-state simulation of flow over a throttle body Aim: Set up and run the steady-state simulation for flow over the throttle body. Objectives: Post process the results and show pressure and velocity contours. Show the mesh (i.e surface with edges) Show the plots for pressure, velocity, mass flow rate, and total cell…

Combustion Simulation of the non-premixed model Part I 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 as shown in Fig. You need to plot for CO2, H2O, CH4, N2, O2,…

GATE VALVE SIMULATION: Aim: To perform a Parametric Study on Gate valve. Objectives: For this challenge, you will have to perform a parametric study on the gate valve simulation by setting the opening from 10 % to 80%.  Obtain the mass flow rates at the outlet for each design point. Calculate the flow coefficient…

Conjugate Heat Transfer Analysis on a graphics card Objective: Run the simulation by varying the velocity from 1m/sec to 5m/sec for at least 3 velocities and discuss the results. Find out the maximum temperature and heat transfer coefficient attained by the processor. Prove that the simulation has achieved convergence…

Rayleigh Taylor Instability Challenge   Objectives: What are some practical CFD models that have been based on the mathematical analysis of Rayleigh Taylor waves? In your own words, explain how these mathematical models have been adapted for CFD calculations. Perform the Rayleigh Taylor instability simulation for…

Ahmed Body Challenge Objective: Run the simulation for the velocity of 25 m/sec with the default air properties in fluent. For this challenge, you will have to provide answers to the following questions: Q1. Describe Ahmed's body and its importance. Q2. Explain the reason for the negative pressure in the wake region. …

Mixing Tee Efficiency Objective: For this challenge, we have created two versions of the mixing tee. One of them is longer than the other. Your job is to set up steady-state simulations to compare the mixing effectiveness when hot inlet temperature is 360C & the Cold inlet is at 190C.  Use the k-epsilon and k-omega…

FVM:: Interpolation and Gradient Schemes literature review Objective: Describe the need for interpolation schemes and flux limiters in FVM.  Need of Interpolation of schemes and Flux limiters in FVM Interpolation of Schemes: In the Finite volume method, the solution is available only at the computational nodes. But…

Compute higher-order approximations using skewed and symmetric stencils. Derive the following 4th order approximations of the second-order derivative.  1. Central difference 2. Skewed right-sided difference 3. Skewed left-sided difference For central differencing No of nodes=p+q-1=4+2-1=5where, p= order of derivativeq=order…