Week 9 - Parametric study on Gate valve.

AIM :  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? RANS MODELLING: The RANS approach decomposes flow variables (e.g. velocity) into…

Aim: Shock tube simulation using Converge CFD package and post processing. Objective: Setup a transient shock tube simulation in Converge. Plot the pressure and temperature history in the entire domain. Plotting the cell count as function of time. Introduction: Shock tube: A simple shock tube is a tube, rectangular…

AIM Our aim is to setup a transient state conjugate heat transfer simulation of flow through a pipe in converge by using different stage interval for super cycling model and different grid size, simulate it using Cygwin terminal and post process in Paraview and check the results.   THEORY/EQUATIONS/FORMULAE USED Structure…

Aim: Simulate the prandtl meyer shock flow in converge CFD. Objective To Do a literature search on what BC's are typically used for shock flow problems. What is a shock wave? To describe the physics behind shock wave. Effects of SGS parameter on shock location (Sub-grid-scaling). Shock flow boundary conditions Boundry…

Aim:   Aim:- Set the transient-state simulation for flow over throttle body case setup in the converge. Export all the input files and run the simulation using Cygwin. Converge plot for velocity, pressure, mass flow rate, and total cell count. create animations of velocity and pressure contours plot for the flow inside…

 AIM:- To run the simulation of a steady-state simulation of flow over a throttle body. OBJECTIVE:- 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. Create an animation in which its throttle…

Aim: The main aim of the project is to simulate the flow over Backward Facing step using CONVERGE CFD in which the simulation is setup with three different meshing parameters assigned with certain inlet and outlet parameters. dx = dy = dz =2e-3m dx = dy = dz =1.5e-3m dx = dy = dz =1.0e-3m (If this is too much for your…

      AIM:  1. For this challenge, we will be setting up a channel flow tutorial. 2. As you watch these videos, set up the case in CONVERGE 3. Make sure the inlet pressure and initial pressure are the same.  4. Once you have the base setup ready, run the case for three different base mesh sizes…

Aim: Perform a combustion simulation of Natural Gas in ANSYS Fluent. Objectives: 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…

AIM:  CHALLENGE FOR GATE VALVE SIMULATION: 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 and flow factor for each opening and…

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: 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…

AIM:   Rayleigh- Taylor instability is caused because of heavier fluid above a lighter fluid which makes the interface unstable and the heavier fluid spikes into the lighter fluid and lighter fluid moves above so as to minimise the net potential energy of the system. Kelvin–Helmholtz instability: When there is velocity…

AIM: To perform the conjugate heat transfer analysis on the exhaust port model.   OBJECTIVES: Calculate the wall(surface) heat transfer coefficient on the internal solid surface & show the velocity & temperature contours in appropriate areas. Maintain the y+ value according to the turbulence model and justify the results.…

AIM: As the body is perfectly symmetric, we can run the simulation by considering the only half body. This is the best practice where you can save on the number of cells and get the results faster as well.  The geometry which is provided with the challenge needs a modification which you should be able to do at this stage…

AIM:  To Simulate the flow over a cylinder  explain the phenomenon of Karman vortex street.    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…

AIM : To created two versions of the mixing tee. One of them is longer than the other. and  to set up steady-state simulations to compare the mixing effectiveness when hot inlet temperature is 360C & the Cold inlet is at 190C.  Using the k-epsilon and k-omega SST model for the first case and based on the judgment to use…

AIM : For the given model we need to check and solve the geometrical errors and assign appropriate PID perform meshing with suitable target length and element quality criteria  PROCEDURE:  as we have the model teslacyber truck car  first we need to do topo for the model then all appers in double cons  we need to divide…

AIM : For the given model we need to check and solve the geometrical errors and assign appropriate PID perform meshing with suitable target length and element quality criteria  PROCEDURE:  as we have the model teslacyber truck car  first we need to do topo for the model then all appers in double cons  we need to divide…

AIM: To check the geometrical error and delete surfaces which are unwanted for surface wrap. After clearing geometry merge all 3 models and add the given target length of 3mm and perform surface wrap. PROCEDURE : Surface wrap is basically used for meshing the components from outside if we wrap any component we can only…

AIM : To check and solve all geometrical errors on half portion and to assign appropriate PIDs and to perform meshing with the given target length and element type, quality criteria for the given BMW model. Target lengths for the different parts of a model are as follow: Body - 3 mm Lights - 4 mm Grills - 1 mm Rims and…

AIM : To check te geometrical errror to make appropriate volume and to creat and assign PID and perform surface mesh for the given target length as per PIDs  Blade stage-1 = 1 mm Blade stage-2 = 1 mm Impeller = 2 mm Shaft rotor = 1 mm Turbo casing = 5 mm Compressor casing = 5 mm Inlet casing cover = 5 mm PROCEDURE:…

SURFACE MESHING ON A PRESSURE VALVE  AIM : To check the geometrical errors, Topology cleanup and then to set three target lengths as three  different cases and mesh the given pressure valve in these set target length of 1mm, 3mm and 5mm and submit three differnt models  for three cases and element type must…