Week 6 - CHT Analysis on a Graphics card

AIM: To perform the data analysis of a given engine data by programming in Python ? Theory of Data Analysis : Data analysis plays a role in making decisions more scientific and helping businesses operate more effectively. It is a process of inspecting, cleansing, transforming  and modeling data with the…

AIM : To perform curve fitting for linear and cubic polynomial ?   Theory: Curve fitting: It is the process of formulating a mathematical function that has the best fit for the series of given data points.  Best fit means to construct a curve where the distances between the actual and the predicted values are…

AIM : 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.  Similarly,…

AIM :  write code that can solve an otto cycle and make plots for it. Here are the requirements 1. Your code should create a PV diagram 2. You should output the thermal efficiency of the engine.         Otto cycle is also termed as a constant volume power cycle. It contains a pair of isentropic…

AIM : RANKINE CYCLE SIMULATOR  Understand the concept of Rankine cycle by referring to standard thermal engineering text book. Create a Rankine Cycle Simulator using OCTAVE/MATLAB. Your code should calculate the state points of the Rankine Cycle (any type of your choice) based on user inputs.  Then, plot the…

AIM : For the given model, check and solve all geometrical errors and Assign appropriate PIDs. Perform meshing with the suitable Target length and element Quality criteria. PROCESS FOR THE GIVEN MODEL : FIRST WE HAVE TO CLEAR ALL THE GEOMETRY ERRORS OF THE  MODEL. THEN ASSIGNING THE DIFFERENT PID'S TO THE MODEL…

AIM :  ERASING all the geometrical errors and delete surfaces which are unwanted for Surface wrap. After clearing geometry,  Merge all the components [Engine, Gearbox and Transmission] and perform surface wrap. Target length for Wrap = 3 mm REQUIRED CASE FOR THE GIVEN MODELS : Cleaning up…

AIM : Mesh the components part by part. Eliminate off elements present in the mesh. For the given model, check and solve all geometrical errors on half portion and Assign appropriate PIDs. and to perform meshing with the given Target length and element Quality criteria. After meshing the half model, Do symmetry to the…

AIM : The aim is to refine the geometry and perform surface and volume mesh. Perform surface mesh with the given target lengths 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 Take Away: Exploring different…

AIM : To perform topology clean up and mesh the geometry with three different mesh length elements. Take away: By the end of the discussion one will be able to, Get familier with different tools to clean the geometry. Use different size mehs elements and figure out which is better for capturing the physics. CASES: Case…

AIM: To carry out combustion simulation and observe the changes with addition of water in the combustion. Theory : Combustion usually takes place with the ignition of fuel in presence of air. This is global reaction. There are intermediate reactions taking place. If we know the rate of forward and reverse reaction of these…

Aim: To understand the flow through the valve and calculate the flow parameters required to estimate the difference in valve lift. Objective: To simulate gate valve. Estimate flow parameters. To carry out parametric study. GATE VALVE FUNCTION : Gate valves are used to shut off the flow of liquids rather than for flow regulation.…

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…

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. Your Objectives: Run the simulation by varying the velocity from 1m/sec to 5m/sec for at least 3 velocities…

Aim : Tte aim is to understand the Rayleigh taylors instability phenomena and how it takes place. Objective : Some practical CFD models that have been based on the mathematical analysis of Rayleigh Taylor waves. Explain how these mathematical models have been adapted for CFD calculations. Perform the Rayleigh Taylor…

Aim : To run simulation to anlyse Conjugate Heat transfer (CHT) in Exhaust ports. Objective : To understand why and where a CHT analysis is used. Run the CHT simulation using different turbulence model and justify results. Introduction :  The Conjugate Heat Transfer (CHT) analysis type allows for the simulation of heat…

Aim :           To run External flow simulation over an Ahmed body, Describe Ahmed's body and its importance,Explain the reason for the negative pressure in the wake region,and Explain the significance of the point of separation. Objective :              The objective…

Aim : To simulate the flow over a cylinder and explain the phenomenon of Karman vortex street. Objective : Part-1 : Simulate the flow with the steady and unsteady case and calculate the Strouhal Number for Re= 100. Part-2 : Calculate the coefficient of drag and lift over a cylinder by setting the Reynolds number to 10,100,1000,10000…

 AIM : Set up steady-state simulations to compare the mixing effectiveness when the hot inlet temperature is 36C and the cold inlet is 19C. Use both the K-epsilon and K-omega SST models for the first to get project judgement about each method, later use the most suitable model for further simulations. Simulate each case…

  1.In this challenge you will simulate the same problem as in week 1 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…

    1.In this challenge, you will simulate an axi-symmetric flow by applying the wedge boundary condition. The flow is laminar and flows through a constant cross-section pipe at an inlet Reynold's number of 2100. You can do a transient or steady state simulation and you will validate your results with the Hagen- Poiseuille's…

1. What is Finite Volume Method(FVM), write down the major differences between FDM & FVM. Also, describe the need for interpolation schemes and flux limiters in FVM.      You can use the 1D linear heat conduction equation as an example.      EXPLANATION :    In computational…

  1.In this challenge, you are going to simulate an incompressible-laminar-viscous flow through the backward facing step geometry. You should perform a transient simulation. The solver can be chosen based on the described physics of the flow. You need to explain the entire simulation procedure (how you set up the…

  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 technique. You need to determine the steady-state temperature distribution…

  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 = 800 K You…

To derive the fourth order approximation of the second order derivative : 1.central difference 2.Skewed right-sided difference 3.Skewed left-sided  difference After deriving these schemes, prove that your skewed schemes are fourth-order accurate  write a program in Matlab to evaluate the second-order derivative…

1.To implement the control logic of a washing machine using stateflow in simulink.    a.if the power supply is available,the system gets activated.    b.if the water supply is not   available,stop the process &indicate through LED.    c.soaking time should be 200s followed by…

  1.Making a simulink model of a doorbell using a solenoid block :  Door bell model -           1. Pulse generator - The pulse generator is used to create square wave pulses at regular time intervals.The block waveform parameters Amplitudde,pulse width,period and  phase…

  Program on NASA thermodynamic data file to find 14 coefficients,Enthalpy,Entropy and Specific heat. clear all close all clc % R = universal gas constant R = 8.314; % to open file f1 = fopen('THERMO.dat','r') % to read lines line1 = fgetl(f1); line2 = fgetl(f1); value = strsplit(line2,' '); % to get global temperatures…

STIMULATING THE MOTION OF A SIMPLE PENDULUM.  PROGRAM - 1. % simple pendulum clear all close all clc % inputs b = 0.05; g = 9.81; l = 1; m = 1; % initial conditions theta_0 = [0;3]; % time span t_span = linspace(0,20,100); % solve ode [t results] = ode45(@(t,theta) ode_func(t,theta,b,g,l,m),t_span,theta_0); % plotting…

Code to stalagmite function and to find global maxima of the function. Program - 1. clear all close all clc % defining our search space x = linspace(0,0.6,150); y = linspace(0,0.6,150); % creating 2-dimensional mesh [xx,yy] = meshgrid(x,y); % evaluating the stalagmite function for i = 1:length(xx) for j = 1:length(yy)…

Program to stimulate the forward kinematics of a 2R robotic arm. Program - 1  the below program is substituted in program - 2 second loop. % Program to stimulate the forward kinematics of 2R robotic arm % inputs l1 = 1; l2 = 0.5; theta1 = 45; theta2 = 30; % link 1 origin points x0 = 0; y0 = 0; % link 1-end oints x1…