Week 3 - External flow simulation over an Ahmed body.

Simulating Cyclone separator with Discrete Phase Modelling Objectives: To explore empirical models used to calculate the cyclone separator efficiency and to perform an analysis on a given cyclone separator model by varying the particle diameter from 1 μm to 5 μm at constant velocity of 3m/s and calculate the separation…

                                                                                    CHT Analysis of an Exhaust…

CHT Analysis on a Graphics card Objectives: 1. Perform a steady-state conjugate heat transfer analysis on a model of a graphics card. 2. Run the simulation by varying the velocity from 1m/sec to 5m/sec and discuss the results. 3. Find out the maximum temperature and heat transfer coefficient attained by the processor.…

                                                                       Simulating Combustion of Natural Gas Objectives: Perform a combustion…

Auto ignition using Cantera Objectives: PART I Program a reactor network code to simulate the Auto Ignition Time for Methane under the following conditions (simulation time = 10 secs) Plot the variation of the Auto Ignition time of Methane with a constant temperature of 1250K and pressure varying…

Compact Notation derivation for a simple mechanism Objective: To derive a compact notation for the below mechanism; Reaction rate: The reaction rate or rate of reaction is the speed at which a chemical reaction takes place, defined as proportional to the increase in the concentration of a product per unit time and…

Handling Mixtures with Cantera Objectives:  To use the Quantity class of Cantera and calculate the number of moles and validate them analytically. Class - Quantity: The quantity class of Cantera helps to create mixtures with different compositions and conditions such as Temperature and Pressure.  1.Estimation…

Surface preparation and Boundary Flagging of Port Fuel Injection(PFI) Geometry Objectives: Perform a surface preparation on the Gasoline Engine PFI geometry and flag the necessary boundaries so as to perform CFD simulation. Port Fuel Injection geometry:                    …

FINAL TEST- Converge Studio  Q1. What is the Compression ratio for the engine? Compression ratio = Total Volume/Clearance Volume = (Vs+Vc)/Vc Here, Vs - Swept Volume, Vc - Clearance Volume The below plot shows the variation of cylinder volume with respect to the Crank angle.     Stroke Volume: …

Simulation of Port Fuel Injection (FULL HYDRO) Objectives:  To perform a full hydro simulation on a Port Fuel Injection geometry and analyze the results. Port Fuel Injection:                                        …

Emission characterization on a CAT3410 engine using Converge Studio Objectives: Setup an engine simulation of CAT3410 using a 60 deg. sector geometry of piston bowl profiles, Omega and Open W. Analyze the emissions such as Soot, NOx, and unsaturated hydrocarbons. Compare the Indicated Mean Effective Pressure(IMEP) and…

Conjugate Heat Transfer Simulation of a pipe Objectives: Setup a conjugate heat transfer simulation of a flow-through pipe and perform a grid independence test for the outlet temperature. Compare the simulation time against several supercycle stage intervals. Conjugate heat transfer: The term Conjugate heat transfer comes…

Prandtl Meyer Shock Wave Simulation Objectives: Simulate the Prandtl Meyer Expansion Shock and investigate the effect of SGS parameters on shock location and temperature. Waves in Compressible flow: Gas flow over a body creates a disturbance that propagates through the fluid domain and interacts with other parts of the…

Transient simulation of flow over a throttle body Objective: Perform a Transient simulation of flow over a throttle body and post-process the results. Throttle Body: The throttle body is a flow controlling valve used in IC engines to control the intake air and in process industries in the form of a butterfly valve. In…

Shock tube simulation Objectives: To set up a transient shock tube simulation using Converge CFD and plot; 1. Pressure and temperature history in the entire domain 2. Cell count as a function of time   Shock Tube:                        A shock tube is a…

Flow over a backward-facing step   Objectives: Perform a comparative study on flow over a backward facing step for the below grid configurations dx = dy = dz =2e-3m dx = dy = dz =1.5e-3m dx = dy = dz =1.0e-3m    Flow regimes in backward-facing step: Flow over a backward facing step is one of the benchmarking…

Steady-state simulation of flow over a throttle body   Objectives: Perform a Steady State simulation of flow over a throttle body and post-process the results. Throttle Body: The throttle body is a flow controlling valve used in IC engines to control the intake air and in process industries in the form of a butterfly…

                                                                                       Channel flow…

Converting a detailed engine model to a FRM model Objectives: Convert a detailed engine model to FRM Model Build FRM Model for following configuration using FRM builder approach  Bore 102 mm stroke 115 mm CR 17 No of cylinder 6 CI engine Twin Scroll Turbine GT Controller  Fast Running Model (FRM): FRMs execute…

                                                                 External flow simulation over an Ahmed body   Objective:  To generate Velocity and…

                                                                             Turbocharger Modelling   Objectives: …

Discretization of 3D intake manifold using GEM-3D   Objectives: 1. Explore Tutorial- single cyl DI with discretization length 0.1 mm for intake runner and compare its computation time with default case. 2. Explore (GEM3D) - “Building intake manifold from STL model”    Numerical Discretization:…

Basic Calibration of Single cylinder CI-Engine Objectives: 1.Compare SI vs CI and list down differences  2.Change MFB 50 and observe its impact on performance   Single Cylinder CI Engine Model:                                                                    Fig. CI Engine (Left) and SI Engine (Right)   Schematically,…

Parametric study on Gate valve   Objectives: To perform a parametric study on the gate valve simulation by setting the opening from 10% to 80%.  Obtain the mass flow rates at the outlet for each design point. Calculate the flow coefficient and flow factor for each opening and plot the graph. Discuss the results…

                                                                     Rayleigh Taylor Instability   Objectives: 1. To explore practical CFD…

                                                     Steady Vs Unsteady flow over a cylinder Objective: Part I: Simulate the flow over a cylinder and explain the phenomenon of Karman vortex…

Mixing Efficiency of Tee   Aim:  1. To compare  Case 1 : Short Mixing Tee Case 2 : Long Mixing Tee and perform the following Velocity and temperature contour plots on the cut planes along and across the pipe. Velocity and temperature line plots along and across the length of the pipe. Perform Mesh independent…

                                SI Engine (Tutorial 1)   Objective: Run the case at 1800 rpm and list down important parameters Air flow rate BMEP BSFC In-cylinder pressure Increase the power output at 3600 rpm by 10% Solution: Case 1:…

                                                                                       Introduction…

                                                        BlockMesh Drill Down Challenge   Aim:  Create a simple geometry and mesh the same using blockmesh  How does…

                                                                             Otto Cycle using Python   Objective: …

                                                                                     Curve Fitting using…

                                                                                           …

                Parsing NASA Thermodynamic data-Matlab   Aim: Write a function that extracts the 14 coefficients and calculates the enthalpy, entropy and specific heats for all the species in the data file.   Calculate the molecular weight of each species and display…

                                                                            MBD Simulation on a Piston Assembly   Aim: Model…

                       MBD Simulation on IC Engine Valve Train   Aim: To model and simulate IC Engine Valve Train.   Objectives: 1.Model the parts and assemble them in SolidWorks.  2.Run the simulation using the below parameters 3.Obtain the,  Valve…

                        MBD of Internal Geneva Mechanism Aim: To create the 3D model of the internal Geneva mechanism. Tasks Create 3D models for driver and driven wheels. Perform motion analysis by rotating the driver wheel at 10rpm. Obtain the following…

                        Solving second order ODEs using Python   Objective: To write a program in python that solves the second order ODE representing the equation of motion of a simple pendulum.   Equation of Motion representing Pendulum:   Here,…

                         Taylor Table method and Matlab code Objective:  Derive the Fourth order approximation of the second order derivatives using Central difference scheme,Skewed right sided difference schemeSkewed left sided difference scheme…

                    Frequency Analysis of a rotating shaft Aim: To find out the critical frequencies of a rotating shaft. Given data: A geometry without dimensions. Bearing Fixture has to be located at both the ends of the stepped shaft.   Solution Procedure:  …

                                        Simple Pendulum Simulation using Matlab   Objective: To write a program that solves the second order ODE representing the equation of motion of a simple pendulum.  …

                      Solving the steady and unsteady 2D heat conduction problem Objective: To solve the 2D heat conduction equation using a Transient solver and a Steady state solver using Iterative techniques (Jacobi,Gauss Seidel,SOR).   Given Data:  Assume…