Week 2 - Flow over a Cylinder.

AIM: Create a MATLAB model of electric car which uses a battery and a DC motor. Choose suitable blocks from Powertrain block set. Prepare a report about your model including following: Objectives:         1. System level configurations        2. Model parameters    …

AIM: Part A: 1. Search and list out the total weight of various types of aircrafts.  2. Is there any difference between ground speed and air speed? 3. Why is it not recommended to use aircraft engine power to move it on the ground at Airport?  4. How an aircraft is pushed to runway when its ready to take off?…

AIM: For a defined driving cycle, calculate the energy required for braking. Why electric motor can’t develop braking torque at high speed similar to starting? How electric and mechanical brakes are coordinated?  Make a MATLAB program which plots contour of given motor speed, torque and efficiency values. Attach…

AIM: To Answer the below Queries of Week 7 Challenge 1. A. Explain a MATLAB demo model named ‘Speed control of a DC motor using BJT H-bridge’.     B. Comment on the armature current shoot-up from the scope results.     C. Refer to the help section of ‘The Four-Quadrant Chopper DC Drive…

AIM: To understand and answer the following objectives: 1.  Which types of power converter circuits are employed in electric and hybrid electric vehicle?    2.  An Electric Vehicle's powertrain with 72V battery pack in shown in the diagram below. The duty ratio for acceleration operation is…

  Aim: To study the power train block set and answer the following questions: What is the difference between mapped and dynamic model of engine, motor and generator? How can you change model type?  How does the model calculate miles per gallon? Which factors are considered to model fuel flow?  Run the HEV…

AIM: Use ADVISOR tool to simulate the following objectives: 1.   For EV_defaults_in file, if cargo mass is 500 kg with all other default conditions, can the vehicle travel for 45 km with FTP drive cycle? Conclude your observations.  2.   In the above case, try changing the battery capacity and…

AIM: To perform the Combustion simulation of a non-premixed model using Ansys Fluent.   OBJECTIVE: To 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…

Aim: To perform a parametric study on the gate valve simulationby setting the opening from 10% to 80%.  Objective:  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…

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: To perform Conjugate Heat Transfer flow simulation over a graphics card using Ansys Fluent OBJECTIVE: To conductsteady-state conjugate heat transfer analysis on a model of a Graphics Card To study the effect of different velocities on the temperature   METHODOLOGY:  Introduction:  Conjugate Heat…

Aim:  To study the concept of Rayleigh Taylor Instability and some practical CFD models that have been based on the mathematical analysis of Rayleigh Taylor waves. To study the Rayleigh Taylor Instability simulation for 2 different mesh sizes in addition to baseline and compare the results. To study the the effect…

AIM: To perform Conjugate Heat Transfer flow simulation through a Exhaust port using Ansys Fluent OBJECTIVE: 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…

Aim: To study the effects of flow over the Ahmed body and perform the grid independence test. The objectives are:   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. To generate Velocity and…

Aim:  To Simulate the flow over a cylinder and explain the phenomenon of Karman vortex street. Objective:  To simulate the flow with steady and unsteady case  and calculate the Strouhal Number for Re = 100. To calculate the coefficient of drag and lift over a cylinder by setting the Reynolds number…

Aim : Given Flow through mixing tee (i.e. short and long), 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…

Q1. What is the Compression ratio for the engine? Compression ratio is the ratio of the volume of the cylinder and its head space (including the pre-combustion chamber, if applicable) when the piston is at the bottom of its stroke to the volume of the head space when the piston is at the top of its travel ('top dead centre',…

 AIM : To run the simulation to study Emission characterization on a CAT3410 engine using Converge and achieve the following objectives below: Create cut-plan animations showing Soot, Nox and UHC and compare them between the omega and the open-w pistons. Compare the imep and power values graphically …

AIM: To perform Full- hydro simulation by surface preparation and boundary flaggig using Converge CFD and post process the results using Paraview. OBJECTIVE: To perform surface preparation and bounary flagging on a given IC engine case. Setting up Full-Hydro case setup-(PFI)simulation for the  setup. To show…

1. AIM:  To derive the Reynolds Averaged Navir Stokes(RANS) Equations and explain the following terms.    Objectives:  To 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…

1. AIM: To perform transient simulation of shock tube using Converge CFD and post process the results using Paraview. 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  2. METHODOLOGY:…

  AIM: To perform Conjugate Heat Transfer flow simulation through a pipe using Converge CFD and post process the results using Paraview. OBJECTIVE: Setup a flow simulation through a pipe Inlet Reynolds number should be 7,000 HINT : Use the below formula to calculate velocity for corresponding value of REYNOLD…

AIM: To perform Prandtl Meyer Shock flow simulation using Converge and achieve the below enclosed objectives. To Setup and run the case on Prandtl Meyer shock flow for supersonic inlet condition.(velocity=680m/s) To Setup and run case on Prandtl Meyer shock flow for subsonic inlet condition.(velocity=100/s) Post…

AIM: To perform transient state simulation for flow over throttle body having mesh size dx = 2e-3m, dy = 2e-3m & dz = 2e-3m and achieve the below enclosed 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,…

AIM: To perform steady state simulation for flow over throttle body having mesh size dx = 2e-3m, dy = 2e-3m & dz = 2e-3m and achieve the below enclosed 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,…

AIM:  To develop a Data Visualizer Tool that would perform the following things. 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,…

1. AIM  To perform Curve Fitting for the given data containing temperature and Cp values using Python 2. METHODOLOGY What does popt and pcov mean?  Answer: ' popt ' refers to an array which consist of the coefficients of the polynomial specified at the begining of the program.  'pcov' refers to a square…

AIM: To create a PV diagram and display the thermal efficiency of the engine working in otto cycle using Python.  METHODOLOGY: Otto Cycle Used in SI engines. The four-stroke Otto cycle is made up of the following four reversible processes: 1–2, Isentropic compression 2–3, constant-volume heat…

OBJECTIVE: 1. Tutorial- single cyl DI add case 2 with discretization length 0.1 mm for intake runner and compare with default case 1 Parameters-Torque, BSFC, max cylinder pressure simulation time 2. Explore tutorial no 2 (GEM3D) - “Building intake manifold from STL model” (80 marks) METHODOLOGY: Challenge…

1. AIM: To Explore tutorial number 9 and write a detailed report (50 marks) To Build FRM Model for following configuration using FRM builder approach (50 marks) Bore 102 mm stroke 115 mm CR 17 No of cylinder 6 CI engine Twin Scroll Turbine GT Controller Run all cases 2. METHODOLOGY: Challenge 1 FRMs are used to achieve…

AIM: To list down different Turbo Chargers and locate examples from GT-Power Explore the tutorial no. 6 and 7 To plot operating points on the compressor and turbine maps  To find in which application Variable Geometric Turbine is beneficial To Explore example- Diesel VGT EGR and understand the modeling part METHODOLOGY:…

Explore the GUI of GT SUITE and list down modules available with brief description. (15 marks) Solution:  GT-ISE – It is the interface module, where we could build models and run simulation by step by step creation and control of settings of each individual components such as cooler, valve train, combustion,…

AIM To Program and generate a computational mesh for any wedge angle and grading schemes. The following are the problem objectives: Perform 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…

AIM To Program and generate a computational mesh for any wedge angle and grading schemes. The following are the problem objectives: 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 poiseuille's…

AIM To program and study the Block Mesh Drill down Challenge using OpenFoam having the following criteria met : 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 Study velocity magnitude profile change as a function of mesh grading…

1. AIM To Program and find the numerial solution of 1D supersonic nozzle folw simulation using Maccormack method. The following are the problem objectives : Find solution using Conservative and non-conservative forms Figure out the minimum number of cycles for which the simulation should be run in order for convergence…

AIM To write a program to solve the 2D heat conduction equation by both implicit and explicit schemes 1. Jacobi 2. Gauss-seidel 3. Successive over-relaxation METHODOLOGY INTRODUCTION Assumption Domain is a unit square and number of grid points along x and y are equal  Boundary Conditions: (Drichlet type) Left wall…

AIM To model & assemble American Chopper and Yacht using solid and Surface modeling tools.  METHODOLOGY AMERICAN CHOPPER PART AND SURFACE MODELLING The following American Chopper parts were modelled in order to have a solid understanding in shell feature, of spider webbed wheel rims, sketch blocks, linear pattern,…