Week 3: Flow over a backward facing step

Objective : To Identifying & cleanup all the topological errors in the given Tesla Cyber Truck Car model. To create a surface mesh. To Create a wind tunnel around Tesla Cyber Truck Car . To create a volumetric mesh to perform an external flow CFD analysis simulation.   Introduction : ANSA :…

Aim: The aim of this project is to surface wrap an automotive powertrain. The CAD models to which can be found here. Engine Gearbox Transmission Objective: The objectives of this project are To check for the geometrical errors and delete surfaces that are unwanted for the surface wrap. To Merge all 3 models and perform…

For the given model, check and solve all geometrical errors on half portion and Assign appropriate PIDs. Perform meshing with the given Target length and element Quality criteria. After meshing the half model, Do symmetry to the other side. Target lengths for the different parts of a model are as follow: Body - 3 mm Lights…

  Aim: For the given model of a turbocharger, check for the geometrical errors to make appropriate volumes. Create and assign PIDs accordingly. Create surface mesh and use that to create a volumetric mesh.   Objective: 1. Perform surface mesh with the given target lengths as per PIDs. Blade stage-1 = 1 mm Blade…

Ain:                To study surface meshing on given geometry, Making three different models with 3 different target lengths. Geometry: The model provided has many flaws which are to be corrected before meshing Given Geometry As we can see there are…

TITLE Conjugate Heat Transfer analysis of an exhaust port. OBJECTIVES Give 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…

AIM Parametric Study for a Gate Valve Objectives To perform the parametric study on the gate valve by simulating the opening of gate valve ranging from 10mm to 80mm. To obtain the mass flow rate for each design point. Calculate the flow factor and flow coefficeint for each design point. Introduction The gate valve is the…

AIM :- To perform grid independency test on the Ahmad body and compare the results. DISCUSSION :- As the body is perfectly symmetric, we can run the simulation by considering the only half body. This is the best practice where we can save on the number of cells and get the results faster as well.      The geometry which…

Rayleigh Taylor Instability Challenge:- 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…

The flow over a 2D cylinder is a very simple flow simulation and has a lot of fluid properties to be monitored while running it. While the flow can be witnessed in real life, It has a specific pattern that forms the Karman Vortex Street. its an oscillation flow phenomenon that can be observed very easily. So let's understand…

AIM :- To perform grid independency test on the Ahmad body and compare the results. DISCUSSION :- As the body is perfectly symmetric, we can run the simulation by considering the only half body. This is the best practice where we can save on the number of cells and get the results faster as well.      The geometry which…

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 diameter from 1 μm to  5 μm and…

Aim Data Analysis of given data Objective Data visualizer: Your script should take column numbers as the input and plot the respective columns as separate images Each file should be saved by the name of the column The plot labels should be extracted from the file. If I request a plot between column 1 (crank angle) and…

  Curve Fitting: Curve fitting is the process of constructing a curve or mathematical function that has the best fit to a series of data points possibly subject to constraints. Curve fitting can involve either interpolation where an exact fit to the data is required, or smoothing, in which a \"smooth\"…

In Engineering, ODE is used to describe the transient behavior of a system. A simple example is a pendulum The way the pendulum moves depends on the Newtons second law. When this law is written down, we get a second order Ordinary Differential Equation that describes the position of the "ball" w.r.t time. This example…

1. Objective:- To write code in Matlab and Python that can solve an otto cycle and Plot PV Diagram.i. The code should create a PV diagram.ii. Finding the thermal efficiency of the engine. 2. Basic:- 2.1 Ideal Otto Cycle:-Air standard Otto cycle is used for the SI Engines (Spark Ignition Engine). The cycle Contains Mainly…

Q1. What is the Compression ratio for the engine?    Compression ratio is defined as a ratio of the maximum volume to the minimum volume of the combustion cylinder. in our case compression ratio is 5.74e−45.70e−5=10.075.74�-45.70�-5=10.07     Q2. Modify the compression ratio for this…

ntroduction The Deisel Engine is an IC Engine in which the ignition of the fuel is caused by the ignition of the air at the elevated temperature of the air in the cylinder due to the mechanical compression, thus the diesel engine is a so-called compression-ignition engine. The air temperature in the cylinder is elevated…

Aim: To simulate a full hydrodynamic simulation of a PFI Engine using CONVERGE. Objectives: A brief introduction to the motion of the IC engine and its performance metrics Setting the full hydrodynamic case using CONVERGE Studio Calculating the performance parameters for the simulated PFI Engine Post processing the simulation…

Aim: Surface preparation and Boundary Flagging (PFI) Objective: The task to be performed are as follows 1 Boundary Flagging. 2 Surface preparation. After setting up the NO HYDRO case set up, make sure you create an animation for NO HYDRO and send it to us on Freshdesk (support@skill-lync.com) Make sure you are submitting…

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? Turbulence: Turbulence is an irregular motion of the air resulting…

Objective 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 an animation and upload it on You tube and provide the…

Aim: To Setup a flow simulation through a pipe. Objective: 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 at INLET BC using below formula…

AIM: Prandtl Meyer Shock problem objectives: 1. Shock flow boundary conditions Do a literature search on what BC's are typically used for shock flow problems 2. What is a shock wave? In your own words, describe the physics behind shock waves 3. Effect of SGS parameter on shock location In the Prandtl Meyer shock problem,…

Aim: Setup and run transient state simulation for flow over a throttle body. 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. Also show the calculations on how you calculated an end time for…

Aim: Set up and run the steady state simulation for flow over throttle body. 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: The throttle body is an important part of the air…

Aim:  To setup the case in CONVERGE studdio. Objective: Once you have watched the video, setup the case in CONVERGE Once you have the base setup ready, 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 (If this is too much for your PC, use 1.2e-3m)…

Aim: To Setup a channel flow Cases. Objective: 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…

Aim: 1.Perform a steady-state conjugate heat transfer analysis on a model of a graphics card.  Use appropriate materials of your choice for the simulation. Make sure to properly define the correct solid and fluid zones. 2.Run the simulation for best possible mesh with combination of coarse and refined mesh in different…

Rayleigh Taylor Instability Challenge:- 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…

TITLE Conjugate Heat Transfer analysis of an exhaust port. OBJECTIVES Give 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…

Objective: Perform Combustion Simulation on the Combustor model using Ansys Fluent, plot the variation of the mass fraction of the different species and write a detailed report explaining the results obtained.  Question: Part I Perform a combustion simulation on the combustor model and plot the variation…

AIM :- To perform grid independency test on the Ahmad body and compare the results. DISCUSSION :- As the body is perfectly symmetric, we can run the simulation by considering the only half body. This is the best practice where we can save on the number of cells and get the results faster as well.    …

Procedure Understand k-epsilon and k-omega SST by considering case-1  Let us start with analyzing the best method to converge the solution for this particular case by studying two methods: k-epsilon and k-omega SST. In this study will set two setups, one for k-epsilon and another for k-omega SST. Here, we are…

PROBLEM STATEMENT: 1. Steady state analysis & Transient State Analysis Solve the 2D heat conduction equation by using the point iterative techniques that were taught in the class. The Boundary conditions for the problem are as follows; Top Boundary = 600 K Bottom Boundary = 900 K Left Boundary = 400 K Right Boundary…

AIM In this challenge you will simulate the same problem as in week 11 but by applying Symmetry Boundary Condition. You will do the simulation for the below mentioned angles using both symmetry and wedge boundary conditions and validate them with HP equations like you did in week 11 challenge.   Angles to test: 10,25,45(degrees)…

AIM : To simulate an axi-symmetric flow by applying the wedge boundary condition through a constant cross-section pipe.         OBJECTIVES : The main objective of this challenge is to simulate an axi-symmetric flow by applying the wedge boundary condition for a laminar flow…

Objective: To study and understand                     1. The difference between FDM and FVM.                     2. Interpolation schemes in FVM                 …

Case 1 - Simulate the flow without using any grading factor (i.e., GF = 1) Case 2 - Simulate the flow with grading factor of 0.2. The cells should be finer near the walls (includig the step wall). You can use the following mesh parameters but you can feel free to modify these values. Mesh specification Number…

Aim: Simulation of a 1D Super-sonic nozzle flow simulation using Macormack Method. In this challenge you are going to simulate the isentropic flow through a quasi 1D subsonic-supersonic nozzle. You will derive both the conservation and non-conservation forms of the governing equations and sovle them using the MacCormack's…

I. Aim: To Derive the  4th order approximations of the second-order derivative of a function for the following numerical schemes.  1. Central difference 2. Skewed right-sided difference 3. Skewed left-sided difference   Numerical schemes: 1. Fourth order  Central difference approximation of the…

AIM : To create a Rankine Cycle Simulator usingg MATLAB OBJECTIVE 1. To calculate the state points of the Rankine Cycle based on user inputs. 2. 1o plot the corresponding and hes plots tor the given set of inputs. THEORY RANKINE CYCLE THE IDEAL CYCLE FOR VAPOR POWER cYCLES The Rankine cycle, which is the ideal cycle for…

  AIM: To study the system level simulation of an all terrain vehicle. KEYWORDS: CVT, lookup table, Dashboard, baja ATV sOFTWARE: Matlab, Simulink OBJECTIVE: 1. Study the baja ATV model without dashboard. 2. Study the baja ATV model with dashboard 3. Study the baja ATV model using lookup table without dashboard. 4.…

AIM: L. Implement control logic of a "washing machine" using Stateflow as per given sequence if the power supply is available, the system gets activated.If the Water supply is not available, stop the process & indicate through LEDSoaking time should be 200s followed by Washing time of 100s.Then rinsing happens for…

Aim: To make a simulink model of a doorbell using solenoid block.To use a thermistor to sense the temperature of a heater & turn on orturn off the fan. Simulink Model Explanation: .The pulse generator is used to create square wave pulses atregular intervals.The block waveform parameters Amplitude.pulsewidth,period…

  Aim-Write a code in MATLAB to optimise the stalagmite function and find the global maxima of the function.   objective-  To write a code in MATLAB to optimise the stalagmite function and find the global maxima of the function and Clearly expalin the concept of genetic algorithm in your…

Aim- to solve the second-order differential equation using MATLAB to find out the transient behaviour of a simple pendulum.   Objective- to write a program that solves the following second order differential equation.    Equation-         d^2 theta/dt^2 + (b/m)(d theta/dt) + (g/L)sin…

AIM - Write a program In Matlab to simulate the forward kinematics of 2R robotic arm.   OBJECTIVE-  :- To explain the code in a chronological order. :- To represent the result in an animation format.   ROBOTIC ARM- These are the machines which are programmable to perform a specific task.   PRINCIPLE:-…