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Week 5 - Turbulence modelling challenge

TURBULENCE MODELS FOR CFD APPLICATIONS DNS MODEL A direct numerical simulation (DNS) is a simulation in computational fluid dynamics (CFD) in which the Navier–Stokes equations are numerically solved without any turbulence model. This means that the whole range of spatial and temporal scales…

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Read more Projects by ANURAG M BHARADWAJ (55)

Hybrid Vehicle Case Study

Objective:

AIM The aim of this challenge is to simulate the hybrid vehicle model OBJECTIVES Simulation run of hybrid vehicle Increase the Vehicle mass by 50%. Increase the Drag coefficient by 5%. Comparison of the results HYBRID ELECTRIC VEHICLES A hybrid vehicle is one that uses two or more distinct types of power, such…

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10 Sep 2021 02:28 PM IST

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    Week 11: FSAE Car Project

    Objective:

    AIM The aim is to simulate the Aerodynamics Behaviour of FSAE Car  OBJECTIVE ABCD Racing company is looking to perform Aero Simulations for their FSAE vehicle and they have hired you to do the job. The suspension team wants a detailed report on the total downforce on individual components. They have two races in this…

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    29 Aug 2021 08:15 AM IST

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      Week 10: Modeling and Simulation of flow around an Ahmed Body

      Objective:

      AIM The aim of this validation project is to simulate and validate the flow over an Ahmed Body OBJECTIVES Creating the CAD file for the Ahmed body Making of virtual wind tunnel for the car Simulating the case and validation of results with experimental values   AHMED BODY The Ahmed body was described originally by…

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      22 Aug 2021 12:40 PM IST

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      Flow over an NACA 2412 Airfoil

      Objective:

      AIM The aim of this project is to simulate the flow over a NACA 2412 Airfoil OBJECTIVES Plot Coefficient of drag vs angle of attack Plot Lift Coefficient vs angle of attack Comparison of turbulence model results AIRFOIL An airfoil (American English) or aerofoil (British English) is the cross-sectional shape…

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      04 Aug 2021 04:01 PM IST

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        Broadband Noise modelling over Ahmed body

        Objective:

        AIM This simulation aims to model computational acoustics in Ahmed body OBJECTIVES Setup the domain and setup assuming body is traveling at 110 kmph Run the setup till convergence and plot for static pressure and coefficient of drag and lift to check for convergence Turn on Broadband- modeling and detail the acoustic field…

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        04 Aug 2021 04:01 PM IST

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          2D Cavitation simulation

          Objective:

          AIM The aim of this project is to simulate the flow through a winkl hoeffer nozzle OBJECTIVES Different pressure difference conditions Pressure difference vs cavitation zone length plot   Cavitation is a phenomenon in which the reduction of pressure to or below the liquid's vapour pressure leads…

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          04 Aug 2021 04:00 PM IST

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            Turbo Charger Simulation Project

            Objective:

            AIM The aim of this project is to simulate the turbocharger flow analysis OBJECTIVES Pressure ratios of different conditions Speed of impeller FSI model for turbocharger TURBOCHARGER A turbocharger, colloquially known as a turbo, is a turbine-driven, forced induction device that increases an internal…

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            04 Aug 2021 04:00 PM IST

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              Proportional Valve simulation

              Objective:

              AIM The aim of this simulation is to capture flow characteristics of proportional valve OBJECTIVES Variation of lift of valve Comparison of results with and without AMR FSI model integration with transient case solver PROPORTIOAL VALVE The valve body of a safety relief valve is typically designed with an angle of 90 between…

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              04 Aug 2021 03:59 PM IST

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                Super Charger Simulation Project

                Objective:

                AIM The aim is to simulate the flow of air inside the supercharger OBJECTIVES Performance data of supercharger Obtainning the plot of total pressure v/s mass flow rate providing different pressure ratios as boundary conditions Conservation of mass of air from supercharger   SUPERCHARGER A supercharger is…

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                04 Aug 2021 03:59 PM IST

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                  Aerofoil Simulation

                  Objective:

                  NACA 0012 AIRFOIL The NACA airfoils are airfoil shapes for aircraft wings developed by the National Advisory Committee for Aeronautics (NACA). The shape of the NACA airfoils is described using a series of digits following the word "NACA". The parameters in the numerical code can…

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                  12 Jul 2021 02:59 PM IST

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                    Week 5 - Turbulence modelling challenge

                    Objective:

                    TURBULENCE MODELS FOR CFD APPLICATIONS DNS MODEL A direct numerical simulation (DNS) is a simulation in computational fluid dynamics (CFD) in which the Navier–Stokes equations are numerically solved without any turbulence model. This means that the whole range of spatial and temporal scales…

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                    26 Jun 2021 02:53 PM IST

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                    Week 3 - Pitot tube

                    Objective:

                        A pitot tube, also known as a pitot probe, is a flow measurement device used to measure fluid flow velocity. The pitot tube was invented by the French engineer Henri Pitot in the early 18th century and was modified to its modern form in the mid-19th…

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                    19 Jun 2021 05:50 PM IST

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                      Centrifugal pump simulation

                      Objective:

                      AIM  The aim of this project is to simulate the flow of liquid inside a centrifugal pump OBJECTIVES Running the simulation with various mass flow rates at outlet Increase in outflow distance by twice the impeller diameter  Performance plot Efficiency of  pump CENTRIFUGAL PUMP A centrifugal pump is…

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                      13 Feb 2021 05:16 AM IST

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

                      Objective:

                      AIM The aim is to simulate the no hydrodynamic case of port fuel injected engine OBJECTIVES Full simulation of working IC Engine PORT FUEL INJECTED ENGINE Port Fuel injection is when fuel (either gasoline or diesel fuels) is injected prior to the valve and cylinder, where the combustion happens. Back in the early 1900s,…

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                      19 Dec 2020 07:27 PM IST

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                        Literature review - RANS derivation and analysis

                        Objective:

                        AIM  The aim is to conduct a literature review of Reynolds Average Navier Stokes[RANS] OBJECTIVES Derivation of RANS equations Performing Reynolds decomposition for engineering flow parameters REYNOLDS AVERAGED NAVIER STOKES EQUATION The Reynolds-averaged Navier–Stokes equations (or RANS equations)…

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                        09 Dec 2020 01:56 PM IST

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                          Shock tube simulation

                          Objective:

                          AIM The aim of this project is to simulate the shock waves flow in shock tube OBJECTIVES Some of the objectives are listed as follows Transient setup for shock tube  Plot of temperature and pressure  Visualisation of the shock wave propagation SHOCK TUBE The shock tube is an instrument used to replicate…

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                          23 Nov 2020 09:13 AM IST

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                            Conjugate Heat Transfer Simulation

                            Objective:

                            AIM  The aim of this simulation is to analyse the conjugate heat transfer through a cylinder OBJECTIVES Flow simulation through pipe with conjugate heat transfer  Turbulent flow with high Reynolds number Super cycle model needs to be implemented CONJUGATE HEAT TRANSFER The term conjugate heat transfer (CHT) is…

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                            20 Nov 2020 07:40 PM IST

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                            Prandtl Meyer Shock problem

                            Objective:

                            AIM  The aim of the simulation is to study the Prandtyl Meyer Shock Flow OBJECTIVES Boundary conditions for shock flow Analysis of shock wave in physics Effect of sub-grid scale on temperature SHOCK WAVE In physics, a shock wave, or shock, is a type of propagating disturbance that moves faster than the local speed…

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                            19 Nov 2020 05:30 PM IST

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                            Transient simulation of flow over a throttle body

                            Objective:

                            AIM The aim is to simulate the transcient flow over the throttle body within the elbow OBJECTIVES Transcient simulation of the throttle body post process of the flow parameters THROTTLE BODY In fuel injected engines, the throttle body is the part of the air intake system that controls the…

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                            19 Nov 2020 05:30 PM IST

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                              Steady state simulation of flow over a throttle body

                              Objective:

                              AIM The aim of this challenge is to simulate the flow over a throttle body inside an elbow OBJECTIVES Simulation of flow over a throttle body Post processing of the results for flow variables THROTTLE BODY In fuel injected engines, the throttle body is the part of the air intake system that…

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                              17 Nov 2020 04:12 PM IST

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                                Flow over Backward Facing Step

                                Objective:

                                AIM The aim is to Simulate the flow of air over Backward facing step OBJECTIVES The case should be run with 3 different mesh sizes Post processing of the flow parameters BACKWARD FACING STEP Backward-Facing Step (BFS) flow is one representative separation flow model, which is of significance in both theoretical and engineering…

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                                10 Nov 2020 09:22 AM IST

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                                  Channel Flow

                                  Objective:

                                  AIM The aim is to simulate the flow inside a rectangular channel OBJECTIVES Simulation has to be run for 3 different cases varying the mesh  Contour plots of parameters  Comaparision of results in paraview and Converge post   PIPE FLOW Pipe flow, a branch of hydraulics and fluid mechanics,…

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                                  09 Nov 2020 01:06 PM IST

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                                    Reaction Mechanism Reduction

                                    Objective:

                                    AIM The aim of this project is to analyse the reduction in reaction mechanism of GRI Mech 3.0 OBJECIVES Program to run a reference Ignition delay and Max temperature Analysis for the unreduced mechanism for a set of state values Sensitivity analysis with respect to temperature must be run on all the reactions in the mechanism…

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                                    06 Nov 2020 08:17 AM IST

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                                    Senstivity Analysis Assignment

                                    Objective:

                                    AIM  The aim of this program is to perform sensitivity analysis on GRI file mechanism OBJECTIVES Program that takes all the reactions from the GRI mechanism and calculates 10 most sensitive reactions The sensitivity parameter should be with respect to the Temperature   SENSITIVITY ANALYSIS Sensitivity analysis is…

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                                    22 Oct 2020 02:36 PM IST

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                                      Auto ignition using Cantera

                                      Objective:

                                      AIM The aim of this challenge is to simulate the auto ignition temperature for methane OBJECTIVES Variation of Auto Ignition time of Methane with a constant temperature of 1250K and pressure varying from 1 to 5 atm. Variation of Auto Ignition time of Methane with a constant pressure of 5 atm and temperature varying…

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                                      22 Oct 2020 02:36 PM IST

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                                      Multivariate Newton Raphson Solver

                                      Objective:

                                      AIM The aim of this project is to solve the system of ODE using Newton Raphson Method   MULTIVARIATE NEWTON RAPHSON SOLVER Now lets discretise the equations which are being shown  `(y_1^(t) - y_1^(t-Delta t))/(Delta t) = -0.004 y_1^t + 10^4 y_2^t y_3^` Rearranging the terms, `y_1^(t) = y_1^(t-Delta t) + Delta…

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                                      20 Oct 2020 03:04 PM IST

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                                        Literature review: ODE Stability

                                        Objective:

                                        AIM The aim is to conduct a literature review on stability of ODE    STABILITY OF ODE  In mathematics, stability theory addresses the stability of solutions of ODE and of trajectories of dynamical systems under small perturbations of initial conditions. The heat equation, for example, is a stable…

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                                        12 Oct 2020 09:02 AM IST

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                                        Compact Notation Derivation for a simple Mechanism

                                        Objective:

                                        AIM  The aim is to derive reaction rate ODE of a simple reaction mechanism   DERIVATION OF REACTION RATE  Consider the following reactions, lets number the following reactions. CO + O2 -> CO2 + O (1) O + H2O -> OH + OH (2) CO + OH -> CO2 + H (3) H + O2 -> OH + O (4) And now lets list all the…

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                                        11 Oct 2020 10:09 AM IST

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                                          Combustion Efficiency Calculation after Preheating

                                          Objective:

                                          AIM The aim of this challenge is to study the effect of Pre heated air on combustion efficiency and Adiabatic Flame Temperature OBJECTIVES Effect of Preheating on adiabatic flame temperature Effect of preheating on Combustion efficiency Energy balance for Recuperator RECUPARATOR A recuperator is a special purpose…

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                                          10 Oct 2020 11:16 AM IST

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                                          Handling Mixtures with Cantera

                                          Objective:

                                          AIM The aim of this challenge is to work on Quantity class in Cantera  OBJECTIVE The calculation of Adiabatic Flame Temperature of gas mixture using the Quantity class PYTHON CODE FOR CALCULATION OF MASS AND MOLE FRACTIONS OF AIR import cantera as ct gas = ct.Solution('gri30.cti') air = ct.Quantity(gas) air.TPX =…

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                                          09 Oct 2020 01:02 PM IST

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                                          Adiabatic Flame Temperature calculation

                                          Objective:

                                          AIM The aim of this project is to simulate the combustion of methane for calculation of Adiabatic Flame Temperature OBJECTIVES The main objectives are as follows Effect of equivalence ratio on AFT for methane Constant pressure process with heat loss parameter Testing the different fuels with 2 carbon atom bond   ADIABATIC…

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                                          09 Oct 2020 01:02 PM IST

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                                          Battery Thermal Management System Simulation

                                          Objective:

                                          AIM The aim of this project is to simulate the flow inside a Battery Thermal Management System OBJECTIVES The main objectives are as follows Excel Calculator for Volumetric heat generation source Run the case for different mesh sizes - 12,8,6 and 4 mm  Effect of element length on accuracy of results EXCEL CALCULATOR…

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                                          25 Sep 2020 01:44 PM IST

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                                            Discretisation of 3D Intake Manifold

                                            Objective:

                                            AIM The aim of this project is to discretise the 3D model into 1D GT Suite model OBJECTIVES The following objectives can be noted as Discretisation of Intake Manifold Effect of Discretisation length on simulation time DISCRETIZATION OF 3D MODEL OF INTAKE MANIFOLD In applied mathematics, discretization is the…

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                                            13 Sep 2020 03:32 PM IST

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                                              Fast Running Model

                                              Objective:

                                              AIM The aim is to explore the Fast Running Model in GT-Suite OBJECTIVES Building an FRM using FRM approach Exploration and understanding of FRM   FAST RUNNING MODEL Fast Running Engine Models are dynamic, fully-physical engine models that are designed specifically to run fast. While high-fidelity engine models are…

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                                              04 Sep 2020 06:08 PM IST

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                                              Turbocharger Modelling Using GT Suite

                                              Objective:

                                              AIM The aim is to analyse turbocharger modelling using GT-Suite OBJECTIVES The objectives of the challenge are Types of turbochargers and their models in GT-Suite  Variable Geometry Turbocharger applications Plotting of operating points on turbine and compressor map TURBOCHARGER A turbocharger is a turbine-driven,…

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                                              04 Sep 2020 11:21 AM IST

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                                                Case Study on SI Engine

                                                Objective:

                                                AIM The aim of this simulation is to run the engine case for maximum power and torque condition OBJECTIVES The main objectives of this simulation are Comparison of important engine parameters Post processing of simulation results SI ENGINE SIMULATION Thus for the case Study of an SI engine the following parameters are…

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                                                28 Aug 2020 08:06 AM IST

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                                                  CI engine Simulation

                                                  Objective:

                                                  AIM The aim of this simulation is to explore the CI engine model OBJECTIVES  The objectives of the simulations are Comparison of SI & CI engine Performance parameters changes Effect of MFB 50 on engine performance COMPARISION OF SI AND CI ENGINE SI Engine CI Engine It works on OTTO Cycle or constant volume heat…

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                                                  26 Aug 2020 09:41 AM IST

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                                                    SI Engine Power Increasing simulation

                                                    Objective:

                                                    AIM The aim of the challenge is to run the simulation on SI Engine OBJECTIVES The objectives of this simulation are Running the simulation for engine speed of 1800 rpm Increase the power output by 10 % while engine is running at 3600 rpm  ENGINE PARAMETERS Air Flow Rate The air flow rate is defined as mass of air…

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                                                    23 Aug 2020 05:05 PM IST

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                                                      Exploration of GUI on GT Suite and Inter Cooler Simulation

                                                      Objective:

                                                      AIM The aim of this challenge is to explore through the graphics user interface of GT Power  OBJECTIVES  Location of settings for setting up of simulations in GT power Exploration of Intercooler tutorials  Setting up simulation of the intercooler GUI OF GT SUITE When we launch the GT Power software we can…

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                                                      19 Aug 2020 09:10 AM IST

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                                                        Laminar Flow over a Backward Facing Step

                                                        Objective:

                                                        AIM The aim of this project is to modify blockmeshDict file for the given conditions OBJECTIVE  The main objective of this project is to simulate the flow over a backward step in OpenFoam and to compare the velocity plots for different mesh grading factors. BACKWARD FACING STEP Backward-Facing Step (BFS) flow is one…

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                                                        11 Aug 2020 08:49 AM IST

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                                                        Challenge on Combustion

                                                        Objective:

                                                        AIM The aim of this challenge is to simulate the combustion process in a combustor OBJECTIVES The objectives of this simulation are Emission modelling for various reaction mechanisms Variation of mass fractions of different species for combustion model Effect of adding water content at the fuel inlet   COMBUSTION…

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                                                        09 Aug 2020 01:43 PM IST

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                                                          Gate Valve Parametric Study

                                                          Objective:

                                                          AIM The aim of this challenge is to simulate the flow through a gate valve  OBJECTIVES Parametric study for diifferent lifts of the gate valve Calculation of flow coefficient and flow factor for all lifts Obtaining mass flow rates of all hte cases   GATE VALVE A gate valve, also known as a sluice valve,…

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                                                          07 Aug 2020 11:31 AM IST

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                                                            Cyclone Separator Challenge

                                                            Objective:

                                                            AIM The aim of this project is to simulate the Discrete Phase Model on the Cyclone separator OBJECTIVES Cyclone separator efficiency study Simulate the cyclone separator by varying the particle diameter Simulate the cyclone separator by varying the particle velocity CYCLONE SEPERATOR Cyclone separators or simply cyclones are…

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                                                            01 Aug 2020 10:27 AM IST

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                                                              Conjugate Heat Transfer Analysis on a graphics card.

                                                              Objective:

                                                              AIM The aim of this challenge is to simulate the Conjugate Heat transfer on graphics card OBJECTIVES The main objectives of this simulation is as follows Appropriate flagging of solid and fluid zones in the graphics card velocity should be varied for different cases. The maximum temperature and the heat transfer coefficient…

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                                                              23 Jul 2020 09:49 AM IST

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                                                                Rayleigh Taylor Instability Challenge

                                                                Objective:

                                                                AIM The aim of this simulation is to simulate the Rayleigh Taylor Instability. OBJECTIVES The objectives are as follows The importance of Rayleigh Taylor Instability in CFD. Simulate the Rayleigh Taylor Instability with two different mesh sizes. Define an user defined fluid for this simulation Significance of Atwood number…

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                                                                21 Jul 2020 12:27 PM IST

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                                                                  Damped Pendulum

                                                                  Objective:

                                                                  AIM  The aim of this challenge is to learn to solve ordinary differential equation in matlab. OBJECTIVE The main objective of this project is to write an program to solve the damped pendulum ordinary differential equation.   DAMPED PENDULUM A pendulum is a body which is suspended body in the form of a mass called…

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                                                                  20 Jul 2020 12:32 PM IST

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                                                                  Exhaust Port Challenge

                                                                  Objective:

                                                                  AIM The aim of this project is to simulate the conjugate heat transfer simulation inside an exhaust manifold. OBJECTIVES The objectives of the simulation are Need of simulating Conjugate heat transfer on exhaust manifold Calculation of wall heat transfer coefficient on internal solid surface Maintaining appropriate y+…

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                                                                  17 Jul 2020 05:55 AM IST

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                                                                    Ahmed Body Simulation

                                                                    Objective:

                                                                    AIM The aim of this challenge is to simulate the external flow over a ahmed body OBJECTIVES The main objectives of this challenge are Generation of the velocity and pressure contour plots for the flow over the ahmed body Significance of wake region and the point of separation in aerodynamics Drag coefficient plots to analyse…

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                                                                    15 Jul 2020 10:03 AM IST

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                                                                      Flow over a cylinder

                                                                      Objective:

                                                                      AIM The main aim of this project is to simulate the flow over the cylinder OBJECTIVES The main objectives of the simulation are simulate the karman vortex street concept  running the simulation for steady and transient case of flow calculate the lift and drag coefficient    KARMAN VORTEX STREET In fluid…

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                                                                      10 Jul 2020 07:12 AM IST

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                                                                        Mixing Tee Simulation

                                                                        Objective:

                                                                        AIM The aim of this project is to simulate the flow inside a mixing tee joint OBJECTIVES The objectives of this project is to simulate flow and study the mixing effectiveness   MIXING TEE JOINT Mixing tee are flow control devices in which they have two inlets, one for the hot fluid and the other one is for the cold…

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                                                                        06 Jul 2020 04:22 PM IST

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                                                                          Simulation of Flow through a pipe in OpenFoam Part 1

                                                                          Objective:

                                                                          AIM The aim of this project is to write a matlab program to automatically generate blockmeshDict file for any wedge angle and mesh grading factor OBJECTIVES The objectives of this project are Simulation of the laminar flow over a pipe post processing of velocity and shear stress profiles   LAMINAR FLOW THROUGH PIPE…

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                                                                          22 Jun 2020 12:59 PM IST

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                                                                          Simulation of Flow through a pipe in OpenFoam Part 2

                                                                          Objective:

                                                                          AIM The main objective of this project is to simulate the laminar flow over a pipe OBJECTIVES The objectives of the project are Writing a matlab code for creating blockmeshdict file for various wedge angles post process velocity and shear stress profiles for the wedge angles comparison between symmetry, wedge and Hagen…

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                                                                          22 Jun 2020 12:59 PM IST

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                                                                          Simulation of a 1D Super-sonic nozzle flow simulation using Macormack Method

                                                                          Objective:

                                                                          AIM The aim of this project is to simulate one dimensional super-sonic flow using Macormack method OBJECTIVES The objectives of the project are to write a program to solve the conservative and the non-conservative form of equations perform a comparison study between the normalised mass flow rate of both the forms of equations…

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                                                                          06 Jun 2020 10:37 AM IST

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                                                                          Solving the steady and unsteady 2D heat conduction problem

                                                                          Objective:

                                                                          AIM The aim of this project is to solve the 2 Dimensional equation using iterative solvers. OBJECTIVE  The main objective is to write an program to solve 2D steady and unsteady state equations by using following iterative solvers Jacobi Gauss Seidel Successive Over Relaxation   TWO DIMENSIONAL HEAT CONDUCTION…

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                                                                          06 Jun 2020 06:16 AM IST

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                                                                          Taylor table method and Matlab code

                                                                          Objective:

                                                                          AIM The main aim of this challenge is to write an program determine the second order derivative for the given function and compare results with different schemes OBJECTIVE The main objective of this challenge is to derive the fourth order approximation for second order function.   FOURTH ORDER APPROXIMATION FOR SECOND…

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                                                                          26 May 2020 07:10 PM IST

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