Week 11 - Simulation of Flow through a pipe in OpenFoam

Objective: To perform CFD meshing for the given Tesla cyber truck model by checking and solving all geometrical errors, Assigning appropriate PIDs and Performing meshing with the suitable Target length and element Quality criteria. Procedure: The given model is imported We use topo tool to make single cons into double…

Objective: To perform surface wrap on automotive assembly Target length for Wrap = 3 mm Procedure: Topo cleanup for all parts is done Merging all the components Closing all the holes before proceeding for surface wrap Creating surface wrap for the full assembly using the wrap option in the mesh toolbar Learning outcomes:…

Objective: To perform volumetric mesh for CFD analysis on a given turbocharger model Procedure: Topology cleanup: The given model is imported Checked geometry for errors with single cons enabled Removed overlapped surfaces by deleting the faces Fixed the single cons by creating a new face Deleted the extended surface and…

Objective: To perform surface meshing on a pressure valve for three different cases with target lengths = 1mm, 3mm, and 5mm and to find the case which yields a good result Procedure: The given model is imported  Checked for geometry errors with single cons enabled Used the fill-hole option to close the outlet surface…

Aim : To implement clustering using an unsupervised algorithm on the car dataset Train a supervised model from the results obtained to predict the class of the cars Dataset : The dataset is about cars from 1985, It consists of: Number of Instances: 205 Number of Attributes: 26 total  15 continuous 1 integer 10…

Aim : To perform data cleaning and descriptive analytics on the Automobile 1985 dataset Dataset : The dataset is about cars from 1985, It consists of: Number of Instances: 205 Number of Attributes: 26 total  15 continuous 1 integer 10 nominal Methods : Data cleaning The dataset is read using pandas and the column…

1) Pros and cons of SVM Pros : Works well for high dimensional problems Since it calculates using support vectors the computational memory is low Cons : Does not work well for a large amount of data Does not work well if the target classes are overlapped  2) Apply SVM to the “Surface defects in stainless steel…

1) Apply knn to the “Surface defects in stainless steel plates” and identify the differences Aim: To apply the knn algorithm to the "faults" dataset and to compare the results obtained from other algorithms Method : Predictive analysis : Code : import numpy as np import pandas as pd import matplotlib.pyplot…

Aim : To perform a combustion simulation on the combustor model and plot the variation of the mass fraction of the different species’ Objective : Part 1 Plot the variation of the mass fraction of the different species in the simulation using line probes at different locations of the combustor Nox and soot model to…

Aim : To perform a parametric study on the gate valve simulation by setting the opening from 10 % to 80% Introduction : A gate valve is a flow control equipment that is used to restrict or stop fluid flow to a certain region in a pipe, this is achieved with help of a spindle and a valve. By lifting the spindle we…

Aim : To perform analysis on cyclone separator and calculate the separation efficiency and pressure drop Introduction : A cyclone separator is a device that is used to separate small particles that are in a flow of relatively large particles. In this there are 2 flows, One is the continuous flow which consists of…

Aim: To perform a steady-state conjugate heat transfer analysis on a model of a graphics card Introduction: Conjugate heat transfer analysis means a combination of heat transfer in solids and liquids. In solid heat transfer takes place due to conduction and in liquid, the heat transfer will take place due to convection.…

Aim: To study Rayleigh Taylor instability and perform the simulation for 2 different mesh sizes and compare the results. Introduction: The Rayleigh Taylor instability occurs when two fluids of different densities interfere with each other. This occurs when the high-density fluid sits on top of the low-density fluid with…

Aim: Simulation and conjugate heat transfer(CHT) analysis on an exhaust port to calculate the wall heat transfer coefficient of the solid surface Introduction:  Conjugate heat transfer analysis means a combination of heat transfer in solids and liquids. In solid heat transfer takes place due to conduction and in liquid,…

Aim: To perform external flow simulation over an Ahmed body and to find the drag coefficient for an air velocity of 25m/s Introduction: Importance of Ahmed body: An Ahmed body is a benchmark model widely used in the automotive industry for validating simulation tools. It was first proposed by Ahmed and Ramm in 1984. It…

Aim: To simulate the flow over a cylinder for a laminar flow with different Reynolds number and visualize Karman vortex street Introduction: When a fluid flows over a cylinder at the top most layer the fluid tends to seperate , this causes some vortex in the wake region and this is called vortex shedding.This causes…

Aim: To simulate the air flow in an mixing tee for the following cases and compare the results Case 1  Short mixing tee with a hot inlet velocity of 3m/s. Momentum ratio of 2, 4.  Case 2  Long mixing tee with a hot inlet velocity of 3m/s. Momentum ratio of 2, 4. Intoduction and Theory: Mixing Tee A mixing…

Aim: To simulate an axi-symmetric flow through a pipe by applying the symmetry boundary condition for the following angles Angles to test(Degree): 10 25 45 Objective: To validate Hydro-dynamic length with the numerical result To validate the fully developed flow velocity profile with its analytical profile To validate…

Aim: To simulate an axi-symmetric flow through a pipe by applying the wedge boundary condition Objective: To validate Hydro-dynamic length with the numerical result To validate the fully developed flow velocity profile with its analytical profile To validate maximum velocity and pressured drop for fully developed flow…

Aim: Transient simulation of an incompressible-laminar-viscous flow through the backward facing step geometry Objective: To simulate the flow without using any grading factor (i.e., GF = 1) To simulate the flow with grading factor of 0.2 Procedure: Choose a solver Choosing a solver tutorial Setting up the case…

Aim: To simulate the isentropic flow through a quasi 1D subsonic-supersonic nozzle Objective: To simulate using both conservative and non-conservative forms of governing equations To use MacCormak method to solve the governing equations Determine the steady-state temperature distribution for the flow-field variables Plot…

Aim: To solve steady and unsteady 2-D heat conduction equation using point iterative methods  Objective: To solve 2-D steady state heat conduction equation using Jacobi,Gauss-Seidel,Successive over-relaxation methods  To solve 2-D unsteady state heat conduction equation by using both explicit and implicit schemes…

Aim: To derive the fourth order approximations of the second order derivative for  Central difference Skewed right-sided difference Skewed left-sided difference Objective: To find the analytical solution for the function = exp(x)*cos(x) To calculate the error as the absolute difference between analytical solution…