Q1. What are some practical CFD models that have been based on the mathematical analysis of Rayleigh Taylor waves? In your own words, explain how these mathematical models have been adapted for CFD calculations  Kelvin–Helmholtz instability: The Kelvin–Helmholtz instability can occur when there is…

Aim: To solve the steady and unsteady/Transient 2D Heat conduction problem using iterative methods(Jacobi,Gauss seidal, Successive Over Relaxation). 1. Assume that the domain is a unit square 2. Assume nx =ny[number of points along x direction is equal to the number of points along y direction] 3. Boundary conditions…

1. Give a brief description of why and where a CHT analysis is used. Ans: CONJUGATE HEAT TRANSFER(CHT) refers to situations in which multiple modes of heat transfer occur simultaneously. Simultaneous multiple heat transfer modes occur in almost all real-world problems, So CHT is quite important as majority of heat transfer…

Objectives: To perform a parametric study on the gate valve simulation. To obtain the mass flow rates at the outlet for 5 design points. To show the cut section view for different design points, and also to show the gate disc lift and fluid volume extraction. To show the velocity contour animations for the design points.…

Finite volume Method: The finite volume method (FVM) is a method for representing and evaluating partial differential equations in the form of algebraic equations. Similar to the finite difference method (FDM) or finite element method (FEM), values are calculated at discrete places on a meshed geometry. One important feature…

 1. Describe about Ahmed body and its importance  The Ahmed Body was first created by S.R. Ahmed in his research “Some Salient Features of the Time-Averaged Ground Vehicle Wake” in 1984. Since then, it has become a benchmark for aerodynamic simulation tools. Ahmed Body had some practical features…

OBJECTIVE: To Mesh the Cylinder model using ANSA PROCEDURE: Import the stp model file into ANSA Graphical USer Interface. By Default the model is in wire frame model, for proper 3D visualization enable shadow mode. By Default the model is in entity mode, change it to PID (Property Identity) Mode. From Utilities bar, select…

Objectives: To write a program in Matlab that can generate the computational mesh automatically for any wedge angle and Grading scheme. To calculate, length of the pipe using the entry length formula for laminar flow through a pipe To show that entry length is sufficient to produce a fully developed flow.  To compare…

Objectives: To Write a Matlab program that can generate the computational blockMesh file  automatically for a wedge angle of 3 degrees and compare the results obtained for Symmetry BC and Wedge BC. To Write a Matlab program that takes an angle as input and generates a blockMesh file for the given angle(i.e., 10, 25,…

Objectives: To find out the maximum temperature attained by the processor. To Prove that the simulation has achieved convergence with appropriate images and plots. To Find out the heat transfer coefficient at appropriate areas of the model. To Identify potential hotspots on the model. CONJUGATE HEAT TRANSFER CONJUGATE…

1Q. Briefly explain about the possible types of combustion simulations in FLUENT. A:  Combustion or burning is a high temperature exothermic chemical reaction between a fuel and an oxidant accompanied by the production of heat, light and unburnt gases in the form of either a glow or flames. Combustion is an integral…

AIM: To solve the following 1D Linear convection equation to observe the propagation of wave with respect to time.  THEORY: Explicit and implicit methods are approaches used in numerical analysis for obtaining numerical approximations to the solutions of time-dependent and space-dependent ordinary and partial…

Objective: To analyse the flow pattern of the fluid inside the gearbox, for two different clearances of the same geometry and each geometry flow is analyzed by two different fluids (Water and Oil) as lubricants. Gearbox sloshing effect:  Slosh refers to the movement of liquid inside another object (which…

 Objectives: To create a 3D Geometry of Backward facing step using CONVERGE studio. To setup the case in CONVERGE and run the Backward facing step flow simulation for three different mesh sizes using Cygwin. To post Process the results using Paraview To compare the results of three simulation Description:  The…

Aim: A)To derive the 4th order approximations of the second order derivative Central difference Skewed right sided difference skewed left handed difference       B) To write a Matlab Program to evaluate the second order derivative of analytical function exp(x)*cos(x) and compare it with numerical approximations,…

Objectives: To setup the case in CONVERGE and run the channel flow simulation for three different mesh sizes using Cygwin. To post Process the results using Paraview To compare the results of three simulation Description:   The fluid which flows through a channel is in direct contact with the surface, it sticks…

  Objectives: To import a 3D Geometry of elbow into CONVERGE studio. To add boundaries and setup the case in CONVERGE and run the elbow flow simulation using Cygwin. To post Process the results using Paraview Importing the Geometry: Open the CONVERGE studio, drop the elbow.stl into the converge studio to import.…

Objectives: To import a 3D Geometry of elbow into CONVERGE studio. To add boundaries and setup the case in CONVERGE and run the elbow flow simulation using Cygwin. To post Process the results using Paraview Importing the Geometry: Open the CONVERGE studio, drop the elbow.stl into the converge studio to import.  …

INTRODUCTION: To solve the 1D linear equation to observe the propagation of wave with time. Governing Equation `{partial u}/{partial t} + C{partial u}/{partial x} = 0` C = Velocity of Propagation The above equation is discretized using first order forward differencing scheme for time derivative and backward differencing…

Objectives: To Generate the BlockMesh file for the given Geometry using OpenFOAM and use the icoFoam solver to simulate the flow through a backward-facing step. To create multiple meshes and will be comparing the results obtained from each mesh. To show the velocity magnitude profile change as a function of mesh grading…

Cyclone Separator: Principle and Working: A high speed rotating (air)flow is established within a cylindrical or conical container called a cyclone. Air flows in a spiral pattern, beginning at the top (wide end) of the cyclone and ending at the bottom (narrow) end before exiting the cyclone in a straight stream through…

Objective: Simulation of 1D supersonic nozzle flow simulation using the Macormack Method using Non-conservative and conservative forms of equations. Non-conservative Flow: In this non-conservative flow, a small control volume is taken inside the pipe flow but with a small change, the control volume here is moving with…