Rayleigh Taylor Instability Challenge

Task 1 - Washing Machine Aim:- To implement Control Logic of a Washing Machine that would function as follows:- If the power supply is available, the system gets activated  If the Water supply is not available, stop the process & indicate through LED Soaking time should be 200s followed by Washing time of 100s.…

Model of a Doorbell:- The model of the door bell used for the simulation is given below.   The details of the components are as follows 1. Pulse Generator:- This block generates a pulse of amplitude 1 for a duration of 2 seconds. This signal is converted to a physical signal using a converter block 2. Physical Signal…

 Part 1. 1) The study is done on a single cylinder diesel engine Discretization length :   Specifies the length of each sub volume where quantities are calculated (Pressure, temperature, mass fractions etc) There are two case setup namely 40mm and 0.1mm      Comparison of results We analyse the…

Aim:- The aim of this project is to find 10 most sensitive reactions affecting temperature of methane air combustion. Introduction:- Chemical reactions comprise a number of intermediary reactions and species. Attempting to simulate the detailed intermediary steps is computationally expensive. An alternative, to this approach…

Fast Running Model Fast Running Engine Model are dynamic, fully physical engine models that are designed specifically to run fast. High fidelity engine models are often too slow running to incorporate system level models where long transient events may be simulated. GT-power engine models can be simplified into FRM using…

Turbochargers Turbochargers are centrifugal compressors driven by an exhaust gas turbine and employed in engines to boost the charge air pressure. Turbocharger performance influences all important engine parameters, such as fuel economy, power, and emissions.  A turbocharger consists of a compressor wheel and exhaust…

Aim:-The aim of this challenge is to simulate the auto ignition temperature for methane under the following conditions - constant temperature of 1250K and pressure varying from 1 to 5 atm. - constant pressure of 5 atm and temperature varying…

Aim: The aim of this project is to solve the system of coupled ODE's using Multivariate Newton Raphspn Method. The system of equations which are to be solved are Theory: Combustion calculations often involve a system of coupled ODE. Often these equations cannot by solved analytically and therefore it is required to…

Aim- The aim of this project is to perform simulation of 1D CI engine and analyse the performance . It is also intended to understand the difference between CI and SI Engine.   Comparison between SI and CI engine The basic differences between CI and SI engines are listed below S.No SI Engine CI Engine 1 SI Engine…

Aim:- The aim of this exercise is to understand the stability of an ODE system    When does a ODE become unstable? Consider the following two dimensional system: `dotx=f(x,y)` `doty=g(x,y)` and suppose that `(barx,bary)`is a steady state, that is  `f(barx,bary)=0` `g(barx,bary)=0` Consider a small pertubation…

AIM- The aim of this exercise is to derive reaction rate ODE of a simple reaction mechanism using a compact notation. REACTION MECHANISM: CO + O2 ⇌  CO2 + O (r1) O + H2o ⇌  OH + OH (r2) CO + OH ⇌  CO2 + H (r3) H + O2    ⇌  OH + O  (r4) RATE OF CHANGE OF CONCENTRATION: 1) CO `(d[CO])/(dt)…

Aim- The Aim of this project is undersstand the impact of pre heating on adiabatic flame temperature and combustion efficiency. Also it is intended to compute the potential savings that can be realized by pre heating. Theory- In order to improve energy utilization, devices such as recuperators and regenerators are used.…

  Aim- The aim of this project is to evaluate ICE engine performace under different conditions. Theory:-An internal combustion engine (ICE) is a heat engine in which the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber that…

Modules available in the Graphical User Interface of GT suite GT Suite comprises of the following modules for GUI in version 2019 1. COOL 3D:-  COOL 3D is  a tool that can be used to buld 3D models of underhood thermal management flow systems that  can be discretized and made into model files for use with…

Aim:- The Aim of this project is to simulate the combustion process in a Diesel Engine using two different piston configurations, namely omega and open w piston. It is intended to compare the performance of the engine and emission characteristic of the engine with these two configurations.   Theory:- The diesel…

Aim:- The aim of this project is to simulate the Full Hydro simulation in an ICE engine, using the inputs provided. By post processing the results, we intend to obtain vital information about the engine, namely compression ratio, combustion efficiency, power and torque for the engine. Introduction:- In the previous…

Aim- The aim of this project is to simulate the no hydro simulation for an ICE engine. Theory:-An internal combustion engine (ICE) is a heat engine in which the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber that is an integral…

Aim:-  The aim of the project is to simulate the flow across a shock tube. We intend to study the pressure and temperature distribution over time. Also we intend to study the variation of cell count over time. Theory:-  The shock tube is an instrument used to replicate and direct blast waves at a sensor…

Aim:- The aim of this project is to simulate a Conjugate Heat transfer simulation across a pipe. The impacts of 3 grid sizes and supercycling on the results would be examined. Theory:-  Meaning of Conjugate Heat Transfer In a heat transfer between a body and fluid flowing past it, the heat transfer inside the body…

Aim:- The aim of this project is to simulate a Prandtl Meyer wave. The location and nature of shock formed is examined. Also impacts of adaptive Mesh refinement is studied. Theory:-  Shock Waves: Shock waves are essentially non linear waves that propogate at supersonic speeds.They can be visualized as a very sharp…

Aim: The aim of the project is to simulate the flow through a throttle body using transient simulation. The objective is to understand the development of the flow with the aid of different plots. Theory: The throttle valve arrangment which is the subject of this analysis is frequently used in automobiles to regulate…

Aim: The aim of the project is to simulate the flow through a throttle body. The objective is to understand the development of the flow with the aid of different plots. Theory: The throttle valve arrangment which is the subject of this analysis is frequently used in automobiles to regulate the air fuel mixture in…

Aim: The aim of the project is to simulate the flow of air through a backward facing step. The following aspects would be investigated - Impact of three different mesh sizes would be studied - Understand the development of flow with the aid of plots for velocity ,pressure and mass flow rate. Theory: Backward-Facing…

Aim: The aim of the project is to simulate the flow of air through a channel. The following aspects would be investigated - Impact of three different mesh sizes would be studied - Understand the development of flow with the aid of plots for velocity ,pressure and mass flow rate. Theory: The flow through a rectangualr channel…

Aim:- The Aim of this project is to simulate the combustion of natural gas in a combustor. The variation of mass fraction of different species along the combustor is studied. Also the impact of introducing water content into the fuel on the mass fraction is also examined. Theory:- Combustion is defined as the rapid oxidation…

Aim:- The Aim of this report is to understand the impact of valve opening on the mass flow rates. Subsequently we also intend to calculate the flow coefficient and flow factor. Meaning of Parametric Study:- A parametric analysis or sensitivity analysis is the study of the influence of…

 Aim of the Project The objective of the project is to:- 1) Understand the Empirical model used to calculate the cyclone separator efficiency 2)To perform an analysis on a given cyclone separator model by varying the particle diameter from 1 μm to  5 μm and determining…

  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   The Rayleigh Taylor Instability arises when a high density fluid is placed over a low density fluid…

AIM:- The aim of this project is Explain where and why a CHT analysis is used Maintain the y+ value according to the turbulence model and justify the result. Calculate the wall/surface heat transfer coeffiecient on the internal solid surface. Show the velocity and temperature contours in the appropriate areas. Verifying…

Objective:-  To simulate and analyze pipe flow using symmetry boundary condition Matlab code to generate blockmesh dict file for any angle theta clear all close all clc d=0.02 r=d/2 mu=8.9e-4; rho=1000; nu=mu/rho; Re=2100; Lent=0.06*Re*d L=Lent+0.3 vavg=Re*nu/(rho); vmax=2*vavg; deltaP=(8*vavg*mu*L)/(r^2); kinP=deltaP/rho;…

Fourth Order Approximation of Second order derivative 1) Central Difference Scheme:-  `(del^2f)/(delx^2)~=f''(x) +Deltax^4f^6(x)(CONSTANT)=((a.f(i-2)+b.f(i-1)+c.f(i)+d.f(i+1)+e.f(i+2))/(Deltax^2))` Using Taylors table Method we expand each of the terms about f(i) `f(i-2)=f(i)-2*Deltax*f'(i) +((2*Deltax)^2/(2!)).f''(i)-((2*Deltax)^3/(3!))*f'''(i)+((2.Deltax)^4/(4!)).f''''(i)+((2.Deltax)^5/(5!)).f'''''(i)`…

Objective :- The objective of this project is to simulate laminar flow in a pipe using OpenFoam. Due to computational constraints we are considering a small portion of the geometry for simulation analysis.The geometry under consideration is a wedge cross section. Using the results from this geometry, we can extrapolate…

1) Procedure followed  a) We access the file 'cavity' located in the incompressible folder of icoFoam application. b) This file is copied onto the run folder, c) Using Blockmesh dict we create the geometry required for this problem, making use of the steps available in the lecture. Each vertices are given co ordinates.…

Non Conservation form Governing Equation for 1D Supersonic Nozzle 1) Continuity Equation `del/(delt)(rhoA) +del/(delx)(rhoAV)=0`  2) Momentum Equation `rho(delV)/(delt) +rhoV(delV)/(delx)=-(delp)/(delx)` 3) Energy Equation `rhoc_v(delT)/(delt) +rhoVc_v(delT)/(delx)=-p(delV)/(delx)-pV(del(lnA))/(delx)` We define…

                               Solving Steady and Unsteady State 2d Heat Conduction Equation The two dimension heat conduction equation can be written as `((delT)/(delt))+alpha((del^2T)/(delx^2)+(del^2T)/(dely^2))=0` In the above equation T…