Linear Convection

1. Energy required for braking. clear all clc load highwaytest.txt time =highwaytest(:,1); velocity = highwaytest(:,2); M = 1200 % load of the vehicle Energy = 0.5*M*(velocity).^2/1000; plot(time, Energy) title('Brakng energy vs time') xlabel('Time') ylabel('Braking energy in kJ') legend('Highway driving cycle') 2. …

Model description: The Bipolar Junction Transistor (BJT) when used for power switching applications, operates as an IGBT. When it is conducting (BJT operating in the saturated region), a forward voltage Vf is developed between collector and emitter (in the range of 1 V). Therefore, the IGBT block can be used to model the…

Types of turbocharger: 1. Single turbo 2. Sequential turbo 3. twin scroll turbo 4. VGT turbo 5. Variable twin scroll turbo 6. Electric turbo.  Beneficial applications of VGT: Variable geometry turbine is usefull in applications where high air fuel ratio and higher peak torque needs to be achieved at low engine speeds. …

A single cylinder SI engine model has been prepared using the tutorial file and few parameters have been discussed below.  The tempelate End Environment is used to define the ambient pressure and temerature boundary conditions. The object env-inlet has one part env-inlet-1 and the object env-outlet has one part env-outlet-1. …

The GT-SUITE has a lot of modules listed below: 1. Flow module.  The flow module has three sections. Components, Connections and References. The components consists of templates such as EngCylinder, EndFlowInlet, Compressor, EndEnviroment etc. The connections mentioned are InjAFSeqConn, InjProfileConn, InjRateConn…

Objective:  The aim of the project is to study the performance characteristics of the PFI four stroke SI engine using Converge Studio and post process the results in Paraview. The analysis has been shown with a detailed case set up for the PFI engine and new models have been introduced like spray modelling, combustion…

Literature review RANS derivation and analysis:   1.1 INTRODUCTION: The Reynolds avergaed Naviers stokes equation. They are used to create turbulence models or studying engineering simulations. In Research and development they are used for flow based analysis. We solve equations for the Ensemble Averaged Velocity…

Objective:  To analyze the performance of CAT3410 engine with two different bowl profiles provided. Study of the engine parameters based on the bowl shape has been done. The emission of both the piston bowl has been studied to check the NOx, UHC and soot for the diesel engines.  Diesel engine Introduction:  …

The wave equation is given by the formula ``du/dt + c*du/dx=0``.  The domain length is 1m along which the grid is created with the help of finite difference scheme. Initilal velocity profile is step function between x=0.3 and x=0.5. A matlab code s written inorder to determine the final velocity of the differential…

Reffered from John D Anderson text book.  Objective: The aim of the project is to understand the flow through a nozzle using a 1D simulation and understand the importance of the equations using Macormack method. Solutions were obtained using two types of forms Conservative form and the Non Conservative form of governing…

Introduction:  Finite volume method is a method for representing and evaluating partial differential equations in the form of differential equations. Similiar to finite difference method or finite element method values are calculated at discrete places on meshed geometry. \"Finite volume\" refers to small volume surrounding…

Introduction: Steady simulation of flow over a throttle body was done using CONVERGE Studio in which a throttle plate is situated inside the elbow body. The geometry of the body was provided in STL format.  The throttle body is situated exactly at the centre of the pipe as shown in the clipped view.    Boundary…

Objective:  The aim of this project to solve the 2D heat conduction steady and transient equation using different types of iterative solvers.  A domain length and height of `1xx1 m^2`was used for the probem. The equation for the temperature at each time step for the tranisent equation was estimated using…

  Introduction: This project signifies the simulation where a solid medium is heated and to study its effcts on the fluid medium. Conjugate heat tube is where two mediums such solid and fluid is used for eg. aluminium or air. In this to keep everything a solid aluminium pipe is considered which is provided a heat…

Introduction: The shock tube divided in two pressure regions where Nitrogen exists in the high pressure regions and oxygen exists in the low pressure region. Both of these regions are seperated by a diaphragm.  This presssure difference would cause the diaphagm to break and a shock wave to propagate inside the tube.…

The objective of this project is to demonstrate the flow of air through a throttle body which movie at a specific time and moves back to its initial position after some time.  A transient solver is used since there is a moving boundary in the geometry.  The throttle starts moving at time t=0 from 0 to 25 degree…

Introduction: A boundary condition is assigned to any model or geometry which helps in solving an ODE or PDE along with the initial conditions depending on whether the flow is steady or transient. There are three types of boundary conditions, Dirichlet boundary condition, the Neumann boundary condition, and mixed boundary…

 The second order differential equation for the motion of the pendulum has been given. To script the given differential equation we need to write this equation as first-order differential equation s that it is easy for Matlab to understand the code. A function is defined in a separate script file so that it is called…