Week 3: Flow over a backward facing step

AIM: To use Python and the Cantera library to understand the factors affecting the adiabatic flame temperature.  OBJECTIVE:  To write a Python script to see the variance of equivalence ratio and adiabatic flame temperature. Using the Cantera library to do the same and observe the differences. Varying the heat…

Aim:- To discuss different types of Interpolation schemes and Flux Limiters used infinite volume method.Interpolation Schemes in Finite Volume Method:-1. Upwind Interpolation Scheme(UDS)2. Central Differencing Schemes(CDS)3. Quadratic Upwind Differencing Scheme(QUICK)4. Hybrid Interpolation Scheme(HIS)5. Total Variation…

Aim:-The aim of this project is to create the geometry for incompressible cavity flowproblem in OpenFOAM and also to simulate the flow through a backward facing step fordifferent grading factor using icoFOAM solver.OpenFOAM code:-● BlockMeshDict File:-In the following code we have created the required geometryfor grading…

Aim:- Simulation of a 1D Super-sonic nozzle flow using Macormack Method forconservative form as well as for non-conservative form.Discretization:-The process of converting the PDE equation into algebric equation isbasically discretization.Now, here in this step, we will use the Mccormack method to solve it.Boundary conditions:-…

AIM:-The aim of this project is to solve steady and unsteady 2D heat conductionequation.Matlab code:-○ In the following program, we have solved equation(1) by using the iterative differentmethod which is mentioned above.○ First, we have assumed that the number of grids in the x-direction is equal to the number of gridsin…

OBJECTIVE: Create the CAD model using your any CAD package  Setup a Coarse CFD simulation  Setup the virtual wind tunnel as shown in the video Apply the right boundary conditions and solver settings  Use a coarse mesh to demonstrate that your setup runs successfully. You need to show an animation of the…

OBJECTIVE: To perform transient simulation over an airfoil, compute the lift and drag coefficients and their variance with AOA and to plot the pressure, velocity contours over the airfoil. THEORY: An airfoil is basically a traverse cross section of a body, it's term used to describe the cross-sectional shape of an object,…

OBJECTIVE:   Baseline configuration Setup a flow simulation through a pipe Inlet Reynolds number should be 7,000  Re = (rho*V*D)/(Dynamic viscosity) Turbulence modelling - K-Epsilon Supercycling parameters - same as in the video Additional 3D outputs Add Y+ to your post.in file Grid dependence test Start…

OBJECTIVE: To run a transient simulation over the throttle body. THEORY: The throttle body, regulates the flow of fluid through constricition. This mechanism has diverse applications in engineering systems, where control over power output is crucial. In this simulation we run a transient simulation, where we shall be considering…

OBJECTIVE: To simulate a steady state flow around a throttle body, to produce the pressure velocity contours, also to produce the plots for the flow variables. THEORY: Throttling in engineerring system design is an important design feature when control over power or engine output is an important part of the problem statement.…

OBJECTIVE:    To apply Reynolds decomposition to the NS equations and come up with the expression for Reynolds stress. Explain your understanding of the terms Reynolds stress What is turbulent viscosity? How is it different from molecular viscosity? THEORY: In fluid dynamics, a turbulent regime refers to irregular…

OBJECTIVE: 1. Setup a transient shock tube simulation. 2. Plot the pressure and temperature history in the entire domain - Explain the result.  3. Plot the cell count as a function of time - Explain the result THEORY: The shock tube is an instrument used to replicate and direct blast waves at a sensor…

OBJECTIVE: 1. To understand the Prandtl Mayer shock problem. 2. To understand shock waves and their physical importance. 3. To understand SGS and its effect on setup & results. 4. To understand what are the boundary conditions employed for such problems. THEORY: Before understanding the evolution of shocks, we must…

OBJECTIVE: To simulate flow in a backward-facing step in converge. To run the simulation for three different grid sizes. To plot the flow parameters and the variance in paraview and line plot command. THEORY: Backward-Facing Step (BFS) flow is one representative separation flow model, which is of significance in both theoretical…

OBJECTIVE OF THE SIMULATION: 1. To simulate flow along a rectangular channel. 2. To simulate with three grid sizes. 3. To understand the flow parameters and their variations. THEORY: Pipe flow or channel flow is one of the most widely seen flow situations in a plethora of applications ranging from engineering, domestic,…

 OBJECTIVE: To simulate the combustion of methane and air and analyze the species and temperature plots, also understanding the variation in species concentration of pollutants like NOx and device detrimental compounds like soot for better design prospects of combustion systems. THEORY: Combustion reactions are there…

OBJECTIVE OF THE SIMULATION: 1. To perform a parametric study on the gate valve by opening it from 10-80%. 2. To find mass flow rate on each design point at the outlet, and calculating the flow coefficient & understanding these parameters association with valve lift. THEORY: A gate valve, also known as the sluice valve…

OBJECTIVE OF SIMULATION:   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 and calculate the separation efficiency in each case. …

OBJECTIVE OF SIMULATION: 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 with appropriate images and plots. Identify…

OBJECTIVE:   To find some practical CFD models that have been based on the mathematical analysis of Rayleigh Taylor waves. Perform the Rayleigh Taylor instability simulation for 2 different mesh sizes with the base mesh being 0.5 mm. [Using air-water mixture for simulation] Run one more simulation with water and user-defined…

OBJECTIVE OF SIMULATION: 1. To set up CHT(Conjugate heat transfer) simulation 2. To show the temperature distributions and velocity profile for the exhaust port. 3.To verify the simulation with theory. 4. We would simulate using k-epsilon and k-omega SST models.   THEORY: Heat, according to thermodynamics is a form…

OBJECTIVE OF THE PROJECT: Q1. Describe Ahmed's body and its importance. Q2. Explain the reason for the negative pressure in the wake region.  Q3. Explain the significance of the point of separation.    TO PLOT: 1. Velocity and pressure contours.  2. The drag coefficient plot for a refined case. 3. The…

AIM: The aim of the simulation can briefly be described as follows:          1.Simulate the flow with the steady and unsteady case and calculate the Strouhal Number for Re= 100.           2. Calculate the coefficient of drag and lift over a cylinder by setting…

In this challenge we are supposed to simulate the mixing of air, in a mixing tee of different lengths, air entering the system has different temperatures and momentum ratios. We are to observe the changes in temperature at the outlet, how it is affected by these parameters. Also, we need to notice the changes when we use…

The code for the given challenge is enclosed below: This part of the code is the primary part of the code where function calling and for loop is used:   close all clear all clc dx=linspace(pi/4,pi/4000,20); % creating the mesh x=pi/3; % the point of evaluation for i=1:length(dx) fourth_error_CDS(i)= fourth_order_approximation_CDS(x,dx(i));…