BlockMesh Drill down challenge

  Intro: We are going to perform file parsing of NASA's Thermo Data file to extract the species and its coefficient and plot the Cp vs T, H vs T, S vs T. We will also calculate molecular weight of all 53 species. The given thermo data file contains 53 species whose Cp vs T, H vs T, S vs T plots need to be saved in…

Question : 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. You need to plot for CO2, H2O, CH4, N2, O2, NOx emissions & Soot formation.    Part…

Question : 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 plot the graph. Discuss the results of the mass flow rate and flow coefficient. …

Question : 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…

Question : 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, Fluid - Engine oil. 30% Immersion, Fluid- Engine oil. 20% Immersion,Fluid-n-heptane (c7h16). 30% Immersion,Fluid-n-heptane (c7h16). Part…

Question Perform a steady-state conjugate heat transfer analysis on a model of a graphics card. You can use appropriate materials of your choice for the simulation. Make sure to properly define the correct solid and fluid zones. Refer the video for further clarification and the model is provided below the video. Run the…

Question : 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 mesh sizes with the base mesh being…

Conjugate Heat Transer : Conjugate heat transfer corresponds with the combination of heat transfer in solids and heat transfer in fluids. In solids, conduction often dominates whereas in fluids, convection usually dominates. In simple words, it is the heat transfer between solid and fuild simultaneously. There is…

Question : 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.  Q3. Explain the…

Question : Simulate the flow over a cylinder and 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 number…

Question : 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 SST model for the first case and based on your judgment use the more suitable model for further cases. Giving the reason for…

 Question : You should have results for the pipe flow case with the wedge boundary condition. Now, your task is to make the simulation work with Symmetry Boundary Condition. You should have results obtained from solving the Hagen Poisuelle's equation You should have results obtained from simulating the pipe flow with…

Question : Write a program in Matlab that can generate the computational mesh automatically for any wedge angle and grading schemes Hint: wedge angle should be less than 5 degrees Make sure that number of cells along the "axi symmetric"  For a baseline mesh, show that the velocity profile matches with the Hagen…

Given Specification The number of cells along the direction of flow = 200 The number of cells along the y-direction for each block = 10 Inlet Velocity is 1 m/sec.  Grading factors are 0.2, 0.5, 0.8 Methodology : Copy the Cavity Directory from the Tutorials directory to FOAM_RUN. Then, Edit the BlockMeshDict file present…

MacCormack method Inputs :- n = 31              x = linspace(0,3,n)              dx = x(2) - x(1)              gamma = 1.4                         …

Question : For both implicit and explicit methods look at the effect of time step on the stability of the solution.  1. How does an unstable solution look like? 2. At what CFL number does your solution become unstable ?   Answer : Stability analysis of Unsteady problem :   Implicit method :- jacobi method …

Question:- Compare fastest steady state simulation vs fastest transient simulation and explain your results Answer : Steady State Case :- The Successive Over Relaxation gives fastest simulation for steady state case. Output for the same is as follows.   Program for steady state equation using SOR method :- clear…

Given :- Boundary conditions :- Left:400K                                        Top:600K                                    …