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Combustion Simulation of Methane and Oxygen using ANSYS FLUENT

Types of Combustion Simulations Based On Mixing Based On Phase Based On Mixing Non-premixed Combustion In non-premixed combustion, fuel and oxidizer enter the reaction zone in distinct streams. This is in contrast to premixed systems, in which reactants are mixed at the molecular level before burning. Examples of non-premixed…

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    Read more Projects by Sudharsan Vijayan (33)

    Week 5 - Rayleigh Taylor Instability

    Objective:

    Rayleigh Taylor Instability Rayleigh Taylor Instability is an instability  of an interface between two fluids of different densities which occurs when the lighter fluid is pushing the heavier fluid. As the RT instability develops, the initial perturbations progress from a linear growth phase into a non-linear growth…

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    02 May 2021 09:37 AM IST

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      Assignment 11

      Objective:

      Aim To perform simulation on single cyl DI with varying the discretization length 0.1 mm for intake runner and compare with default case 1. And explore tutorial on building intake manifold from STL model. Outline It is single cylinder direct injection diesel engine with single intake runner and exhaust runner.…

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      07 Nov 2020 05:16 PM IST

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        Assignment 7

        Objective:

        Fast Running Model(FRM) 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 (e.g. valve timing,…

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        23 Oct 2020 02:01 PM IST

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          Assignment 6

          Objective:

          Aim To list down different Turbochargers and to study the Diesel VGT EGR and understand the modeling part. Different Types of Turbocharger Wastegate Turbocharger Variable GeometryTurbocharger Fixed Geometry Turbocharger E-Turbocharger Twin Turbocharger Wastegate Turbocharger The Wastegate turbocharger consists of a bypass…

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          20 Oct 2020 03:49 PM IST

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            Assignment 4

            Objective:

            Aim To simulate an CI engine simulation and comapre the parameters to an SI Engine. Brake Mean Effective Pressure (BMEP) The comparative measure of power capabilities of engines which operates with same engine displacement and speed and forms a basis for the index performance. BMEP = `(60000* BP)/(LAN` Pa where…

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            16 Sep 2020 03:52 PM IST

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              Assignment 2

              Objective:

              Aim To run the simulation at 1800 rpm and find out air flow rate, BMEP, BSFC and Incylinder- pressure and also run the simulation at 3600 rpm with increase of power output by 10%. Brake Mean Effective Pressure (BMEP) The comparative measure of power capabilities of engines which operates with same engine displacement and…

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              02 Sep 2020 03:43 PM IST

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                Assignment 1

                Objective:

                Aim  To explore the GUI of the GT Suite and perform an simulation on an Intercooler GUI of the GT Suite Some of the modules in the GTSuite are as follows Engine Performance and Acoustics - The engine performance and acoustics library is designed for steady-state and transient simulations and can be used…

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                29 Aug 2020 11:35 AM IST

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                  Week 9 - Senstivity Analysis Assignment

                  Objective:

                  Aim To simulate Sensitivity Analysis for the 10 most sensitve reactions in GRI mechanism with respect to temperature as the parameter. Sensitivity Analysis It is a process to get the realationship between the parameters and the output of a model. Eg Effect of reactions/ Rate on temperature In the form of ODE ,it is given…

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                  16 Aug 2020 10:08 AM IST

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                    Week 7 - Auto ignition using Cantera

                    Objective:

                    Aim To simulate an AutoIgnition Time for Methane in two cases and find the rate of change of molar concentration of the H2O , O2 and OH at 500 K and 1000 K with 5 bar pressure. Constant Temperature with varying Pressure. Constant Pressure with varying Temperarure. Auto Ignition The lowest temperature at which ignition…

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                    12 Aug 2020 08:53 AM IST

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                      Week 6 - Multivariate Newton Rhapson Solver

                      Objective:

                      Aim To solve functions in Multivariate Newton Rhapson sover with backward differencing method. Multivariate Newton Rhapson The Multivariate Newton Rhapson is sloved by using the following formula. `Y_(n ew) = Y_(old) - alpha J^-1 F` where Y_new is the incremented value of the each iteration of the time loop is stored.…

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                      05 Aug 2020 12:49 PM IST

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                        Week 5 - Literature review: ODE Stability

                        Objective:

                        Aim To know about the ODE stability Explicit Method  The Explicit method calculates the state of the system at a later time from the state of the system at the current time. Implicit Method  The Implicit method find a solution solving the equation both the current state of the system and the later one. ODE Stability…

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                        29 Jul 2020 07:33 AM IST

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                          Week 5 - Compact Notation Derivation for a simple Mechanism

                          Objective:

                          Aim To derive the reaction rates for the reaction meachanism given below using compact notatins method.  Rates Of Reactions for Multistep Mechanism `CO + O2 harr CO2 + O` `O + H2O harr OH + OH` `CO + OH harr CO2 + H`  `H + O2 harr OH + O` `k_f` and `k_r` be the rate of forward reation and rate of backward(reverse)reaction.…

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                          25 Jul 2020 11:52 AM IST

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                            Week 4 - Combustion Efficiency Calculation after Preheating

                            Objective:

                            Aim To Find the Combustion Efficiency of the Furnace with respect to Preheating. Recuperator  It is a type of heat exchanger has separate flow paths for each fluid along their own passages and heat is transferred through the separating walls. Recuperators are often used in power engineering, to increase…

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                            22 Jul 2020 03:15 PM IST

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                              Week 4 - Handling Mixtures with Cantera

                              Objective:

                              Aim To mesure the Adiabatic Flame Temperature of Air and Methane mixture using the Quantity class in Cantera.   Solutions 1. The moles are calculated for air in the major consituents are Nitogen and oxygen. The compostion of air in terms mole fractions are 0.79 of Nitrogen and 0.21 in Oxygen. That is why when…

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                              19 Jul 2020 09:46 AM IST

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                                Week 3 - Adiabatic Flame Temperature calculation

                                Objective:

                                Aim   To find the Adiabatic Flame Temperature on Equivalence Ratio with different Hydrocarbons and for different Alkanes with Heat loss and with without Heat Loss.  Equivalence Ratio The measure of how a mixture is derivating from an ideal stiochiometric reaction If Equivalence Ratio = 1 it is stiochiometric…

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                                18 Jul 2020 06:10 AM IST

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                                  Week 10: Project 1 - FULL HYDRO case set up (PFI)

                                  Objective:

                                  Aim To simulate a Full Hydro Simulation in a Port Fuel Injection Engine. Geometry   Above is the geometry of the port fuel injection engine and the cut plane view of the geometry showing the mesh. Regions Below are the four regions in the simulation. In the regions Temperature,Pressure, Turbulent Kinetic Energy and…

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                                  29 Jun 2020 03:37 PM IST

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                                    Week 8: Literature review - RANS derivation and analysis

                                    Objective:

                                    Reynolds-averaged Navier Stokes Equation The Reynolds-averaged Navier–Stokes equations or RANS equations are a time-averaged equations of motion for fluid flow. The idea behind the equations is Reynolds decomposition, whereby an instantaneous quantity is decomposed into its time-averaged and fluctuating quantities,…

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                                    31 May 2020 03:58 PM IST

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                                      Week 7: Shock tube simulation project

                                      Objective:

                                      Shock Tube It is an instrument which is used to replicate and direct blast waves at a sensor or a model in order to simulate actual explosions and their effects, usually on a smaller scale. Shock tubes and other related impulse facilities such as shock tunnels, expansion tubes, and expansion tunnels can also be used to…

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                                      29 May 2020 11:27 AM IST

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                                        Week 6: Conjugate Heat Transfer Simulation

                                        Objective:

                                        Conjugate Heat Transfer The term conjugate heat transfer (CHT) is used to describe processes which involve variations of temperature within solids and fluids, due to thermal interaction between the solids and fluids. The exchange of thermal energy between the two physical bodies is called study of Heat Transfer, the rate…

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                                        25 May 2020 11:47 AM IST

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                                          Week 5: Prandtl Meyer Shock problem

                                          Objective:

                                          Shock Wave and Boundary Conditions Shock wave or shock is a type of propagating disturbance that moves faster than the local speed of sound in the medium. Like an ordinary wave, a shock wave carries energy and can propagate through a medium but is characterized by an abrupt, nearly discontinuous, change in temperature,…

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                                          18 May 2020 12:24 PM IST

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                                            Transient simulation of flow over a throttle body using Converge

                                            Objective:

                                            Objective To simulate flow of fluid over a throttle body in Transient simulation Geometry Boundary Condition Inlet(ID 2)- Inflow type. Pressure-150000 Pa. Speices Boundary Conditions is set to air. Outlet(ID 3)- Outflow type. Pressure-100000 Pa. Speices Boundary Conditions is set to air. Throttle and Elbow (ID 4 &…

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                                            24 Apr 2020 10:41 AM IST

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                                              Steady state simulation of flow over a throttle body using Converge

                                              Objective:

                                              Objective To simulate flow of fluid over a throttle body in Steady State simulation Geometry Boundary Condition Inlet(ID 2)- Inflow type. Pressure-150000 Pa. Speices Boundary Conditions is set to air. Outlet(ID 3)- Outflow type. Pressure-100000 Pa. Speices Boundary Conditions is set to air. Throttle and Elbow(ID 4 &1)…

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                                              24 Apr 2020 10:06 AM IST

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                                                Cyclone Separator using ANSYS FLUENT

                                                Objective:

                                                Four Empirical models used for cyclone separator efficiency are as given as follows: IOZIA AND LEITH MODEL LI AND WANG MODEL KOCH AND LICHT MODEL LAPPLE MODEL IOZIA AND LEITH MODEL The model assumes that a particle carried by the vortex endures the influence of two forces: a centrifugal force,Z, and a flow resistance,…

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                                                17 Apr 2020 12:38 AM IST

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                                                  Gearbox Sloshing Effect using ANSYS FLUENT

                                                  Objective:

                                                  Objective  To analyse the flow pattern of the fluid for two different clearances of the same geometry. Normal Clearance Increased Clearance Normal Clearance  Geometry This is the 2D geometry of the normal clearance gearbox. Mesh  The element size is given as 0.75 mm with method of Triangle method which gives…

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                                                  27 Mar 2020 06:15 AM IST

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                                                    Combustion Simulation of Methane and Oxygen using ANSYS FLUENT

                                                    Objective:

                                                    Types of Combustion Simulations Based On Mixing Based On Phase Based On Mixing Non-premixed Combustion In non-premixed combustion, fuel and oxidizer enter the reaction zone in distinct streams. This is in contrast to premixed systems, in which reactants are mixed at the molecular level before burning. Examples of non-premixed…

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                                                    24 Mar 2020 11:22 AM IST

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                                                      Gate Valve Parametric Study using ANSYS

                                                      Objective:

                                                      Objective  To perform a parametric study on the gate valve simulation by setting 5 design points. Values that is set: Inlet Pressure -10 Pa. Mass Flow Rate  Above is the mass flow rate for the different valuues of the lift. The negative sign indicates that the mass is existing the pipe. Initial Condition-5mm…

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                                                      10 Mar 2020 10:35 AM IST

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                                                        Rayleigh Taylor Instability Simulation using ANSYS

                                                        Objective:

                                                        Rayleigh Taylor Instability Rayleigh Taylor Instability is an instability  of an interface between two fluids of different densities which occurs when the lighter fluid is pushing the heavier fluid. As the RT instability develops, the initial perturbations progress from a linear growth phase into a non-linear growth…

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                                                        06 Mar 2020 06:04 AM IST

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                                                          CHT Analysis on a Graphics Card

                                                          Objective:

                                                          Objective  To perform a steady state conjugate heat transfer analysis on a model of a graphics card. For two cases. Baseline Case Refined Case Geometry The following is the graphic card geometry with an enclosure around it. Baseline Case Mesh Quality The above is the basic mesh quality for the graphic card without…

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                                                          01 Mar 2020 09:40 AM IST

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                                                            Exhaust Port - Conjugate Heat Transfer CHT Analysis

                                                            Objective:

                                                            CHT Analysis The CHT analysis means Conjugate heat transfer (CHT)  which allows the simulation of the heat transfer between Solid and Fluid domains by exchanging thermal energy at the interfaces between them. This requires a multi-region mesh to have a clear definition of the interfaces in the computational domain. …

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                                                            24 Feb 2020 02:39 AM IST

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                                                              Ahmed Body - Grid Dependency Test

                                                              Objective:

                                                              Ahmed body and its importance- In 1984 ,Ahmed body was used in research for the salient features of the Time-Averaged Ground Vehicle Wake. Since then, it has become a benchmark for aerodynamic simulation tools. The Ahmed body has the following parameters length of 1.044 meters, height of 0.288 meters and a width of 0.389…

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                                                              22 Feb 2020 04:44 AM IST

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                                                                Interpolation Schemes and Flux limiters in FVM

                                                                Objective:

                                                                Interpolation schemes The approximation of surfaces and  volumes integrals require values of the variables at the locations other than the computational nodes of the control volume. Values of these node locations are obtained using interpolation formulaes. They are Upwind Interpolations Linear Interpolations Quadratic…

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                                                                23 Jan 2020 10:35 AM IST

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                                                                  Solving the steady and unsteady 2D heat conduction problem using Matlab

                                                                  Objective:

                                                                  Governing Equations : The Temperature Heat Conduction Equation for 2D Transient conduction is  `(delT)/(delt) + alpha*(del^2T)/(del^2x)+(del^2T)/(del^2y)=0` where `(del^2T)/(del^2x)+(del^2T)/(del^2y)=0` is the steady state equation or `nabla^2T =0`. Transisent State Analysis  In Explicit Condition `(delT)/(delt)…

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                                                                  17 Dec 2019 06:21 AM IST

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                                                                    Computing Higher order approximations using skewed and symmetric stencils by Taylor table method and Matlab code

                                                                    Objective:

                                                                    A word document is attached which contains the Taylors table of all the differences and its skewed scheme. Matrix Inversion program clear all close all clc %The values obtained by using Taylor Table method %Where X,Y,Z contains (a,b,c,d,e)c-oefficients %Central Differencing Taylor Table Value A=[1 1 1 1 1; -2 -1 0 1 2;…

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                                                                    11 Dec 2019 02:31 AM IST

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