Week 2 - Flow over a Cylinder.

Aim: Set up and run the transient 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 count. Introduction A throttle valve is used in a…

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 count. Methodology Here flow properties when air flows…

Aim: Simulate the flow over a backward-facing step using CONVERGE CFD. Objectives Simulate the flow using three different mesh sizes Velocity and pressure contours for all the 3 base mesh sizes Plots for velocity, pressure, mass flow rate, and total cell count for all 3 base mesh sizes. Explain where and why separation…

Aim: Simulate the flow of air through a channel of given dimension using CONVERGE CFD. Objectives Simulate the flow using three different mesh sizes Velocity and pressure contours for all the 3 base mesh sizes Plots for velocity, pressure, mass flow rate, and total cell count for all 3 base mesh sizes. Methodology Here…

Aim 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. Objectives Part 1: Plot for CO2, H2O, CH4, N2, O2, NOx emissions & Soot formation at different locations of the…

Aim Perform a parametric study on the gate valve simulation by setting the opening from 10 % to 80%. Objectives Obtain the mass flow rates at the outlet for each design point. Calculate the flow coefficient and flow factor for each opening and plot the graph. Discuss the results of the mass flow rate and flow coefficient.…

Aim To perform analysis on cyclone separator and calculate the separation efficiency and pressure drop. Objectives 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 diameter from 1 μm to 5 μm and…

Aim Perform a steady-state conjugate heat transfer analysis on a model of a graphics card Objectives 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…

Aim Simulate Rayleigh Taylor instability 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 2 different…

Aim Conjugate Heat transfer (CHT) analysis on Exhaust Port Objectives A brief description of why and where a CHT analysis is used Maintain the y+ value according to the turbulence model and justify the results. Calculate the wall/surface heat transfer coefficient on the internal solid surface & show the velocity & temperature…

Aim Simulate and study the flow over an Ahmed body. Objectives Describe Ahmed's body and its importance. Explain the reason for the negative pressure in the wake region. Explain the significance of the point of separation Perform the grid independence test and provide the values of drag and lift with each case.  The…

Aim Simulate the flow over a cylinder and Study the vortex shedding phenomenon. Objectives Explain the phenomenon of Karman Vortex Street.  Simulate the flow with the steady and unsteady case and calculate the Strouhal Number for Re= 100. Calculate the coefficient of drag and lift over a cylinder by setting the Reynolds…

Aim Set up a steady state simulation to compare the effectiveness when hot inlet temperature is `36^0C` and cold inlet temperature is `19^0C` using turbulence models `k-epsilon` and `k-omega` for the given two cases. Short mixing tee with a hot inlet velocity of 3 m/s and Momentum ratio of 2, 4. …

Objective Simulate a laminar flow through a constant cross section pipe by applying wedge boundary conditions and Symmetry boundary condition and validate the results with the Hagen- Poiseuille's equations for the fully developed flow. In addition to that validate Velocity profile, maximum velocity and wall shear…

Objective Simulate a laminar flow through a constant cross section pipe by applying wedge boundary conditions and validate the results with the Hagen- Poiseuille's equations for the fully developed flow. In addition to that write code in Matlab to automate the generation of blockMeshDict file. Also validate Velocity…

Aim:  To derive the 4th order approximations of the second-order derivative using the forward, backward, and central   differencing schemes.  Write a program in Matlab to evaluate the second-order derivative of the analytical function `e^(x)*cosx` and compare   it with the 3 …

Aim: Simulate an incompressible-laminar-viscous flow through the backward facing step geometry with scaling factor 1 and 0.2. Also measure the velocity profile at 0.085 m from the inlet of the geometry for both case studies and compare using plot over line tool. Given data:  The following datas are given in order…

Aim: Solve the 2D steady and transient heat conduction equation using different iterative methods by using explicit and implicit form of equations and plot temperature contours. The Boundary condition is as follows Top Boundary = 600 K Bottom Boundary = 900 K Left Boundary = 400 K Right Boundary = 800 K Problem definition:…

AIM :  Simulate the isentropic flow through a quasi 1D subsonic-supersonic nozzle using the conservative and non-conservative forms of governing equations and solve them using the MacCormack's technique and compare the solutions of both the forms. PROBLEM DEFINITION A 1D converging - diverging nozzle (CD…