Week 7: Shock tube simulation project

Braking Objectives: To calculate the energy required for braking for a defined driving cycle. To explain why electric motor can’t develop braking torque at high speed similar to starting? How electric and mechanical brakes are coordinated?  To make a MATLAB program which plots contour of given motor speed, torque…

 Aim: To study DC Motor Control   Objectives: 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…

Aim: Challenge on EV Drivetrain Objectives: To understand the types of power converter circuits are employed in an electric and hybrid electric vehicle. Duty ratio and power electronics on the vehicle control. To explain briefly about the author's perspective on induction versus dc brushless motors by Wally Rippel, tesla.…

Aim: Full Hydro Case Setup for Port Fuel Injection(PFI).   Objective: To find out the following with the provided engine input: 1. To calculate the compression ratio of this engine. 2. To specify the need a wall heat transfer model and To describe why can't we predict the wall temperature from the CFD simulation?…

Aim: Shock Tube Simulation   Objectives: To set up a transient shock tube simulation To plot the pressure and temperature history in the entire domain To plot the cell count as a function of time To show the mesh generation using PARAVIEW.   Introduction: The shock tube is an instrument used to replicate…

Aim: Literature Review - RANS derivation and analysis Objective: To apply Reynold's decomposition to the NS equations and come up with the expression for Reynold's stress. To explain the understanding of the terms Reynold's stress To explain what is turbulent viscosity? and How is it different from molecular viscosity?…

Aim:  Conjugate Heat Transfer Simulation. Objectives:  To run grid dependence test on 3 grids and to show that the outlet temperature converges to a particular value. To show the effect of supercycle stage interval To set the supercycle stage interval to 0.01,0.02 and 0.03, for these three values, how does…

Aim: To Simulate Prandtl Meyer Shock problem.   Objective: 1. To do a literature search on shock flow boundary conditions. 2. To describe what is a shock wave? 3. To look at the effect of SGS temperature value on cell count and the shock location in the Prandtl Meyer shock problem.   Introduction: When a fluid flowing…

Aim: Transient simulation of flow over a throttle body   Objective: To set up and run the steady-state simulation for flow over the throttle body. To post-process the results and show pressure and velocity contours. To show the mesh (i.e surface with edges) To show the plots for pressure, velocity, mass flow rate…

Aim: Steady-state simulation of flow over a throttle body   Objective: To set up and run the steady-state simulation for flow over the throttle body. To post-process the results and show pressure and velocity contours. To show the mesh (i.e surface with edges) To show the plots for pressure, velocity, mass flow rate…

Aim: To understand the basics of Powertrain Blockset.   Objective: To write what is the difference between the mapped and dynamic model of engine, motor and generator? How the model type can be changed?  To describe how does the model calculate miles per gallon? and which factors are considered to model fuel…

Aim: To use the ADVISOR tool for simulation.   Objective: 1. Using EV_defaults_in file, if cargo mass is 500 kg with all other default conditions, To find whether the vehicle can travel for 45 km with FTP drive cycle? and To Conclude observations. 2. In the above case, try changing the battery capacity and repeat…

Aim:  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.   Objective: Part-I - To plot the variation of the mass fraction for CO2, H2O,…

Rankine cycle Simulator Aim: To write code to simulate the Rankine Cycle. Objective: To create a Rankine Cycle Simulator. The code should calculate the state points of the Rankine Cycle based on user inputs.  To plot the corresponding T-s and h-s plots for the given set of inputs. Rankine cycle The Rankine cycle…

Aim:  To perform an analysis of the cyclone separator and calculate the separation efficiency and pressure drop. Objective: To write a few words about any four empirical models used for cyclone separator efficiency. To perform an analysis of the given cyclone separator model by varying the particle diameter from 1…

Aim: To perform the four simulations of the gearbox sloshing effect and compare the results among all the cases. Objective: To solve the following Four Cases                  1. 20% Immersion, Fluid - Engine oil                  2.…

Parsing NASA thermodynamic data Aim: To write a code in Matlab to parse the NASA thermodynamic data file and then calculate the thermodynamic properties of various gas species. Objective : 1. To write a function that extracts the 14 coefficients and calculates the enthalpy, entropy, and specific heats for all the species…

Genetic Algorithm Aim: To write a code to calculate the global maxima of a stalagmite function. Objective:  To understand the concept of genetic algorithm by referring to varius sources. To find out information regarding stalagmite function and ways to optimise it. Write a code to optimise the stalagmite function…

Gate Valve Parametric Study Aim:  To perform a parametric study on a gate valve model and           To find out the flow coefficient and flow factor for each design point.  Objective: To perform a parametric study on the gate valve simulation by setting the opening from 10 % to 80%. …

Aim: To perform a steady state CHT analysis on a graphics card. Objective: To find out maximum temperature attained by processor. To show that the simulation is converged using appropriate plots.  To find out the heat transfer coefficient at appropriate areas. To identify the potential hotspots on the model. In meshing,…

Solving second order ODEs Aim:- To write a program that solves the following ODE which represents the equation of motion of a simple pendulum with damping `(d^2theta)/(dt^2) + (b/m).(d theta)/(dt) + g/L.sintheta = 0`   Objective:- To simulate the transient behaviour of a simple pendulum and creating an animation of…

Q1. Why and Where a CHT analysis is used? Conjugate Heat Transfer analysis:- Conjugate heat transfer analysis is generally used when there is a teperature variation during heating and cooling in the material due to interaction between solid and fluid phases. It is the combination of heat transfer in solids to heat transfer…

2R Robotic Arm Challenge AIM : Write a program in Matlab to simulate the forward kinematics of a 2R Robotic Arm. OBJECTIVE :                   Step-wise explanation of the code.                   Create an animation file of the plot.…

Q1. What are some practical CFD models that have been based on the mathematical analysis of Rayleigh Taylor waves? Rayleigh–Taylor instability: The Rayleigh–Taylor instability, or RT instability (after Lord Rayleigh and G. I. Taylor), is an instability of an interface between two fluids of different…

1. Describe about Ahmed body and its importance. Ahmed Body- The Ahmed body is a generic car body (a simplified vehicle model). The airflow around the Ahmed body captures the essential flow features around an automobile and was first defined and characterized in the experimental work of Ahmed. Although it has a very simple…

Simulation of flow through the pipe in open Foam: In this challenge, we are going to change the wedge angles as 10,25 and 45 degrees. the other changes are made in the block mesh Dict, pressure, and velocity files. Entrance length: The length of the entrance is the distance that fluid travels after entering a pipe before…

Simulation of flow through the pipe in open Foam: The objective of the challenge is to perform a simulation of flow through the pipe using the Open Foam tool. Here we have taken a wedge-shaped body to perform the simulation. A proper code has to be written in the block-Dict file to get the desired shape. The fluid used…

Abstract: In this problem, the analysis of transient solver for incompressible laminar flow of newtonian fluids is performed by OpenFOAM software tool. An initial Mathematical analysis of Reynolds No. is calculated to figure out the appropriate CFD codes to be used.OpenFOAM case file like the controlDict file and blockMeshdict…

Objective - To describe the need for interpolation schemes and flux limiters in FVM.     Basics In computational fluid dynamics there are 3 numerical method based solvers to solve the governing navier strokes equations these are: 1. Finite difference method 2. Finite element method 3. Finite volume method…

Objectives To write separate functions for conservative and non-conservative forms to and code to solve the 1D supersonic nozzle flow equations using the Macormack Method. To figure out the minimum number of cycles for which the simulation should be run in order for convergence To compare the normalized mass flow rate…

Objective To solve the 2D heat conduction equation by using the following point iterative techniques Jacobi, Gauss-seidel and Successive over-relaxation. Assuming the domain is unit square, Assuming nx=ny [Number of points along X direction is equal to the number of points along Y direction. Boundary conditions for steady…

Objective - 1. To Derive the 4th order approximations of the second order derivative by using i. Central difference ii. Skewed right sided difference iii. Skewed left sided difference 2. To write a program in Matlab to evaluate the second order derivative of the analytical function exp(x)*cos(x) and compare it with the…