Week 2 - Flow over a Cylinder.

Conjugate Heat Transfer Conjugate heat transfer corresponds with the combination of heat transfer in solids and heat transfer in fluids. In solids, conduction often dominates whereas in fluids, convection usually dominates. Conjugate heat transfer is observed in many situations. …

 Q1. Describe Ahmed's body and its importance. Aim To perform external aerodynamic simulation over an Ahmed body and calculate drag and lift coefficient for a free stream velocity of 25 m/s. Also perform mesh independence test Introduction The Ahmed body was at first put forward by Ahmed et al. (1984). is a general…

Steady Vs Unsteady flow over a cylinder  AIM :- Simulate the flow over a cylinder and explain the phenomenon of Karman vortex street.    PART-I Simulate the flow with the steady and unsteady case and calculate the Strouhal Number for Re= 100.  PART-II Calculate the coefficient of drag and lift over a cylinder by setting…

Turbulent and Thermal Mixing in T-junctions  Introduction The mixing process of hot and cold fluids in a tee junction is chaotic (turbulent) in nature and can result in high cycle thermal fatigue of the junction. This random quasi steady state phenomenon of hot and cold shocks can lead to fatigue cracks and possible…

Assignment 11   1. Tutorial- single cyl DI add case 2 with discretization length 0.1 mm for intake runner and compare with default case 1 Creating discretization length as a parameter we can add the desired cases with variable discritization length Two cases are created for comparision in which case 1 is run…

Project 1 : Flow over Ahmed Body   The Ahmed body represents a simplified, ground vehicle geometry of a bluff body type. Its shape is simple enough to allow for accurate flow simulation but retains some important practical features relevant to automobile bodies. This model describes how to calculate the turbulent…

Assignment 7 - Fast Running Model (FRM) Appoaches Introduction Fast Running Engine Models are dynamic, fully-physical engine models that are designed specifically to run fast. While high-fidelity engine models are commonplace in the engine performance department, they are often too slow running to incorporate into system…

Assignment 4  Explore Tutorial No 1- CI final General Layout Engine Template Cylender Template Injector Template Intake and Exhaust valve template     1. Compare SI vs CI and list down differences (assignment no 2-SI) SI Engine (Spark Ignition Engine) Spark Ignition (SI) Engine is a type of engine in which…

Assignment 6 - Exploring Turbocharger and its IC Engine Applications TURBOCHARGER      Introduction A turbocharger, (or turbo), is a turbine-driven forced induction device that increases an internal combustion engine’s efficiency and power output by forcing extra air into the combustion chamber. This…

Assignment 2 - Explore Tutorial No 1- SI final (IC Engine Calibration using GT Power) 1. Run the case at 1800 rpm and list down important parameters  Procedure:  Open Tutorial from a given path and save it in a different folder. Double tap on Engine and change the RPM to 1800.   Results      …

1. Explore the GUI of GT SUITE and list down modules available with brief description. GT SUITE GT-SUITE is a product of Gamma Technologies (GTI), a specialist software company whichis solely focused on the Engine and Vehicle Industry. GT-SUITE handles, in a singlesoftware tool, a wide variety of vehicle and engine technical…

Objective : To write a MATLAB/Octave code for symmetry boundary conditions of flow through pipe. To obtain results at 10,25 and 45 degree angles of pipe flow. To compare results of wedge boundary conditions with symmetry boundary conditions. Theory : The inputs to the problem are same as the one in wedge boundary condition…

Objectives of the Project: (1) Calculation of Flow Variables. (2) Generation of blockMeshDict using the wedge boundary condition. Create the blockMeshDict file in MATLAB such that the mesh is automatically created for any wedge angle. (3) Simulating the pipe flow in OpenFOAM using icoFoam solver. (4) Post process the velocity…

Objective - To describe the need for interpolation schemes and flux limiters in FVM.   Basics In computational fluid dynamics there are 3 numerical method based solvers to solve the governing navier strokes equations these are: 1. Finite difference method 2. Finite element method 3. Finite volume method In finite…

BlockMesh Drill down Challenge: Objective: The objective of the problem is to produce mesh by using the OpenFOAM software, and to show the changes in post-processing of velocity and pressure gradients by using ParaView open source software for the given conditions.  Mesh Specifications:  Number of cells along…

Introduction to Nozzle A nozzle is a device designed to control the direction or characteristics of a fluid flow (to increase velocity) as it exists (or enters) an enclosed chamber or pipe. A nozzle is often a pipe or tube of varying cross sectional area, and it can be used to direct or modify the flow of a fluid(liquid…

Mid term project - Solving the steady and unsteady 2D heat conduction problem Objectives: 1) Obtain temperature distribution for a thin square plate by solving 2D conduction equation. 2) Solve for both- steady state as well as the transient state of the 2D heat conduction equation and compare the results 3) Solve the transient…

  The objective is to Derive the 4th order approximations of the second order derivative for Central difference Skewed right sided difference Skewed left sided difference Also write a MATLAB program calculate 2nd order derivative of the given analytical function F(x)= exp(x)*cos(x) And compare it with the three numerical…