Week 3: Flow over a backward facing step

Discretization : The numerical solution of differential equations cannot produce a continuous distribution of the variables over the solution domain, thus the aim instead becomes to produce a set of discrete values at a number of nodes that cover the solution domain. There are three popular methods to discretize …

Objective: FAST RUNNING MODEL IN GT-POWER FRMs execute much more rapidly than the typical detailed GT-POWER engine model and are ideal for integrating with other vehicle systems where an accurate and predictive engine plant model is desired and where computational speed is critical.  FRMs adapt to changing conditions…

Objective: List down different TC and locate examples from GT Power Explore tutorial number 6 and 7 Plot operating points on compressor and turbine maps In which application Variable Geometry Turbine is beneficial? Explore example- Diesel VGT EGR and understand the modeling part   List of different Turbo-chargers…

OBJECTIVE: The aim of this project is to simulate a single cylinder CI engine in GT Power and  1) Conduct a comparison study between SI and CI engines on various parameters 2) Observe the impact of MFB 50 on performance Case Setup: SI Engine: CI Engine    1. Geometry differences:-  CI engine…

1.Running the case at 1800 rpm and following parameters are noted down : A. First running the tutorial SI engine calibration at given 1800 rpm and following parameters are noted down :     Air flow rate : The amount of air (in kg) flow flowing in the cylinder per hour is 24.6(kg/h) BMEP : The…

Aim: Exploring the GUI of GT-POWER 1. Applications of GT Suite: Hydraulics and Fuel Injections Power train cooling Combustion and Emissions Acoustics Aerospace 2. Locate following settings: Time control flag  Time step and solution control  Integrator/Solver type   Time Control Flag Time step and solution…

#include "udf.h" DEFINE_CG_MOTION(right_motion, dt, vel, omega, time, dtime) { vel[0] = 0.0; vel[1] = 0.0; vel[2] = 0.0; omega[0] = 0.0; omega[1] = 0.0; omega[2] = 2.0e2; /* [rad/s]*/ } DEFINE_CG_MOTION(left_motion, dt, vel, omega, time, dtime) { vel[0] = 0.0; vel[1] = 0.0; vel[2] = 0.0; omega[0] = 0.0; omega[1] = 0.0;…

1. Perform Gradient Descent in Python with any loss function Gradient Descent is an optimization algorithm in machine learning used to minimize a function by iteratively moving towards the minimum value of the function. We use the algorithm when we have to find the least possible values that can satisfy a given cost function.…

1)Calculate all 4 business moments using pen and paper for the below data set? Business Moment - Mean: μ=∑(Xi⋅P(X))μ=∑(Xi⋅P(X)) μ=(0×0.35)+(1×0.25)+(2×0.15)+(3×0.15)+(4×0.10)μ=(0×0.35)+(1×0.25)+(2×0.15)+(3×0.15)+(4×0.10) μ=0+0.25+0.30+0.45+0.4μ=0+0.25+0.30+0.45+0.4…

1. Why there is a difference in the formula of variance for population and sample The main difference between population variance and sample variance relates to the calculation of a variance. i.e.; There is a difference in the formula in the denominator, (N-1) is used in the denominator to reduce the bias. There are two…

AIM: To set the case set up and run the simulation of Hot Aisle and Cold Aisle Containment of Data Centre of Server Room. Introduction to Heat transfer: Heat transfer is the branch of thermal science that focused on the generation of heat and transfer of heat between physical systems. Physical, the process of heat transfer…

Aim: The objective of this simulation example is to analyze the heat transfer in a shell and tube heat exchanger configuration. The system would have water flowing through the shell and hot oil passing through the tubes. Theory: Hydroelectric power plants use the kinetic energy of water to produce electricity. The alternate…

Introduction: A safety relief valve is used to protect people, processes & properties. The protection is done by preventing overpressure in a process system by releasing a volume of fluid from the process when a predetermined maximum pressure is reached thereby reducing excess pressure.         …

Introduction: We all know that the engine develops power by burning an air-fuel mixture & hence to increase the power output the more fuel has to be combusted in each cycle of engine operation & since the engine burns the specific air-fuel ratio more air has to be added when you want to add more fuel. At a normal…

Introduction: The hydraulic machine which converts mechanical energy into hydraulic energy is called a pump. The hydraulic energy is basically in the form of pressure energy. If the mechanical energy is converted into pressure energy, by means of centrifugal force acting on the fluid, the hydraulic machine is called a…

Introduction: In the engine, fuel passes from the complex path to reach the combustion chamber during this path due to sudden changes in the area the pressure of fuel increases or decreases. In this project, we will be focusing on how fuel flow induces cavitation when it enters the combustion chamber through a Winkl Hoffer…

What is Turbocharger & where it is used? As we know that in automotive applications we use a supercharger to boost the engine power but this reduces the engine efficiency by 20% in order to avoid this problem a turbocharger is used. A turbocharger is a device that supplies the more air by pressurizing intake air &…

Objective: To see a simulation of the simple pendulum by solving second-order ordinary differential equations using Python. Theory: This ODE represents the equation of motion of a simple pendulum with damping                                          …

Objective: To write code, to fit a linear and cubic polynomial for the Cp data.   What is Curve fitting? Curve fitting is done in order to study the characteristic equation between a dependent and one or more independent variables. The fitting is done in order to find out which order of polynomial offers the…

Objective: To write a code to extract the data from the converge output file & to calculate specific fuel consumption & Power of the engine. Code: In order to understand the code, let us split the code into 3 parts i.e. Data visualizer, Basic performance calculation & Compatibility check Data Visualizer: First,…

Objective: To plot a PV diagram for standard otto cycle and calculate the thermal efficiency for the same Theory: The Otto cycle is the ideal cycle for spark-ignition engines, in honor of Nikolaus Otto, who invented it in 1867. In ideal Otto cycles, the air-standard assumption is used. The ideal Otto cycle consists of…

Objective:To obtain thermodynamic data for various species, and the coefficients of temperature  in the characteristic equations for entropy, enthalpy and specific heat using a matlab code. The equations are as follows: Specific heat equation: Cp = R*(a1 + (a2*T) + (a3*(T.^2)) + (a4*(T.^3)) + (a5*(T.^4))) Enthaply…

Objective:The To plot T-s and h-s diagram of Rankine cycle using the XSteam function. A conventional Rankine cycle consists of 4 state points, with 1-2 being isentropic expansion in the turbine, 2-3 being isochoric heat removal in the condenser, 3-4 being isentropic compression in the pump and 4-1 being heat addition in…

Objective To simulate the Port fuel injection engine using Converge to determine its performance & emissions Port Fuel Injection:Port fuel-injection systems long ago replaced carburettors in cars because of their efficiency and lower maintenance requirements. With port fuel-injection, gasoline is sprayed into the intake…

Objective: 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 viscosity? How is it different from molecular viscosity? What is Turbulence? In fluid dynamics, a turbulent regime refers to…

Objective:- Setup a transient shock tube simulation Plot the pressure and temperature history in the entire domain  Plot the cell count as a function of time What is Shock Tube & its applications? Before studying about the shock tube first we should know what is shock or shock waves.In order to understand this…

Objective:- Simulate Transient flow of fluid over a throttle body in converge studio and post process the results                                         Case Setup               …

Objective:- Simulated the conjugate heat transfer analysis of fluid through a pipe. Run grid dependence test for three cases Plot Y+ values for each case Study the effect of supercyle stage interval  Before proceeding with the simualtion some important things we should which is explain below: What is Conjugate Heat…

Objective:- Simulate Prandtl Meyer Shock problem Literature review on shock flows and assosiated boundary conditions Effect of SGS parameter on shock location What is boundary conditions? Both ordinary and partial differential equations need boundary conditions to be solved. Different types of boundary conditions can be…

Objective:- Simulate steady flow of fluid over a throttle body in converge studio and post process the results Procedure                                               Step1.Geometry First the throttle…