Week 12 - Validation studies of Symmetry BC vs Wedge BC in OpenFOAM vs Analytical H.P equation

Aim:  To create a meshing of Hood check for the geometrical errors and mesh with the given element Quality criteria. After meshing the component the thickness has to be assigned. Procedure:   1. Open the model in Ansa before assigning the quality check for geometry issues and fix them.  2. After geometry…

Objective: simulation of flow through pipe. 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 pressure drop for fully developed flow. To post process shear stress and validate wall shear stress…

In nonideal fluid dynamics, the Hagen–Poiseuille equation, also known as the Hagen–Poiseuille law, is a physical law that gives the pressure drop in an incompressible and Newtonian fluid in laminar flow flowing through a long cylindrical…

INTRODUCTION Studying the flow behaviour through various structures is an important subject for a CFD engineer.  When fluids flow through different geometries they exhibit different velocity, pressure and flow properties. in this project, simulation of a flow through backward facing step is done by studying the flow…

In computational fluid dynamics, there are 3 solvers based on numerical methods to solve the governing equations of Navier strokes:      1. Finite difference method      2. Finite element method      3. Method of finite volumes Finite Volume method -(FVM)  Finite volume…

Information regarding MacCormack’s technique- Maccormacks technique is a variant of the Lax-Wendorff approach but its must simpler in its application. Maccormacks technique is also explicit finite differencing technique like Lax-Wendorff approach which is second order accurate in both space and time. Maccormack technique…

The heat equation is a second order partial differential equation that describes how the distribution of some quantity such as heat evolves over time in a solid medium, as it spontaneously flows from place where it is higher towards places where it is lower. It is a special case of the diffusion equation. For a function…

AIM:                To derive the fourth order approximations of a second order derivative using central differencing scheme, skewed right sided difference and skewed left sided difference with the help of taylor table method and to compare the…

Problem Statement:Perform the heat transfer analysis using ANSYS-Fluent software for the cylindrical Lithium ion Battery with heat generation boundary condition. Create an enclosure and use air as the working fluid for cooling the battery back system (4 x 2). Take air inlet temperature as 26°C and space between the…

Introduction A gate valve, also known as sluice valve is a valve that opens by lifting a barrier(gate) out of the path of the fluid. gate valves require very little space along the pipe axis and hardly restrict the flow of fluid when the gate is fully opened. the gate faces can be parallel but are most commonly wedge-shaped…

To perform an analysis on a given cyclone separator model by varying the particle diameter from 1 μm to  5 μm and calculate the separation efficiency in each case. Discuss the results. [Use both the velocity's as 3m/sec.] Cyclone Separator:  Cyclone separators are…

Objective: To perform a steady state conjugate heat transfer analysis on a model of graphics card. introduction The term conjugate heat transfer (CHT) describes the process which involves variation of temperature within solids and fluids, due to thermal interaction between the solids and fluids, the exchange of thermal…

THEORY Consider 2 immiscible fluids of varying density ρ1 & ρ2, such that ρ1≠ρ2. The interface line seperates 2 fluid If ρ1>ρ2, the system is stable. If ρ1<ρ2, this is unstable configuration, then the dense fluid will overturn and the heavier fluid will come down and…

Objective :   In this challenge,  We will ,give a brief description of why and where a CHT analysis is used.  We wil simulate both fluid flow and also the heat transfer to the solid i.e., CHT Analysis on an Exhaust port Then we will calculate the wall heat transfer coefficient on the internal solid…

Given data Flow velocity of air = 25 m/sec. The geometry of the Ahmed body along with all dimensions is as given below in the figure. For our model slant angle is 20*. Theory The Ahmed body is a generic car body (a simplified vehicle model). The air flow around the Ahmed body captures the essential flow features around…

Aim: - To simulate the flow over a cylinder and explain the phenomenon of Karman vortex street. Objective: - To setup case for steady and transient simulation. To calculate the coefficient of drag and lift over a cylinder by setting different Reynolds numbers. To observe the effect of Reynolds number on coefficient of…

OBJECTIVE For this challenge, we have created two versions of the mixing tee. One of them is longer than the other. Our job is to set up steady-state simulations to compare the mixing effectiveness when hot inlet temperature is 360C & the Cold inlet is at 190C.  Use the k-epsilon and k-omega SST model for the first case…

AIM For the given model, check and solve all geometrical errors and Assign appropriate PIDs. Perform meshing with the suitable Target length and element Quality criteria PROCEDURE The given model is shown below Lets do Topo to clear the single cons, then the model looks like this We can do plane cut to cut the vehicle…

AIM For the given models, check for the geometrical errors and delete surfaces which are unwanted for Surface wrap. After clearing geometry, Merge all 3 models and perform surface wrap. Target length for Wrap = 3 mm PROCEDURE Open the engine model first Directly delete the surface that are not attached to engine which…

AIM For a 10 cell series lithium ion battery model, simulate the thermal effects and compare life cycle performance at various temperatures, charge & discharge rates using MATLAB PROCEDURE The Simulink diagram is shown below The subsystems will be explained later Use signal builder to generate UDDS drive cycle which is…

AIM For the given model, check and solve all geometrical errors on half portion and Assign appropriate PIDs. Perform meshing with the given Target length and element Quality criteria. After meshing the half model, Do symmetry to the other side. Target lengths for the different parts of a model are as follow: Body - 3 mm…

AIM Design a mechanical battery pack OBJECTIVE Battery pack capacity: 18 kWh Cell: ANR26650M1-B  Prepare a detailed battery pack drawing along with its enclosure. State the assumptions. BATTERY PACK CALCULATION The data sheet I m taking for calculation is attached here as A123_datasheet.pdf The page we are working…

AIM For the given model, check for the geometrical errors to make appropriate volumes. Create and assign PIDs. Perform surface mesh with the given target lengths as per PIDs. Blade stage-1 = 1 mm Blade stage-2 = 1 mm Impeller = 2 mm Shaft rotor = 1 mm Turbo casing = 5 mm Compressor casing = 5 mm Inlet casing cover = 5…

OBJECTIVE Download a file from matlab file exchange and do the following and explain the following a.Simulate the 3 test cases from harness dashboard and write a detailed report on the results. b.What is coulomb counting? Refer to the downloaded model and explain how BMS implements coulomb counting for SOC estimation PROCEDURE…

AIM Check for the geometrical errors and perform Topology cleanup and mesh the model for 3 different target length using 'Tria' element type. The 3 target length are 1 mm, 3 mm and 5 mm PROCEDURE The model is downloaded and changed to wire frame mode to view the errors as shown below. it is done by disabling shadow button…

Lithium-ion uses a cathode (positive electrode), an anode (negative electrode) and electrolyte as conductor. (The anode of a discharging battery is negative and the cathode positive). The cathode is metal oxide and the anode consists of porous carbon/graphite. During discharge, the ions flow from the anode to the cathode…

AIM Carry out a system-level simulation of an all-terrain vehicle of the following models and analyse the results based on change in various input parameters 1)BAJA ATV model CVT gear without dashboard 2)BAJA ATV model CVT gear with dashboard of throttle and brake as input 3)BAJA ATV model based on CVT ratio from Engine…

AIM    1)Implement control logic of a “washing machine” using Stateflow as per given sequence:  If the power supply is available, the system gets activated  If the Water supply is not available, stop the process & indicate through LED Soaking time should be 200s followed by Washing time…

TASK 1 OBJECTIVE Make a Simulink model of Doorbell using solenoid block with the following details. The figure shown below In the above arrangement, when the switch is closed the electromagnet receives electrical power from the battery and pulls the metal arm to hit the bell producing sound.  Create a situation…

Objective:- 1) To develop a function that extracts 14 coefficients and calculates Specific heat,enthalpy and entropy for all 53 species in data file 2)Develop a code to calculate molecular weight of each species and display it in command window 3)To plot Specific heat,enthalpy and entropy Vs local temperature range and…

To find the global maxima of a function,I m taking the negative of a function and find it's global minima using GA in matlab.Then multiplying the result(global minima) by -1 gives the global maxima of a function. The negative function name is stgcpymax.m This is exactly just like taking the mirror image of a function(Reference…

PROGRAM FOR ODE EQUATION SOLUTION AND OSCILATION OF SIMPLE PENDULUM clear all;close all;clc; b=0.05; %damping coefficient g=9.81; %gravity in m/s2 l=1; %length of the pendulum in m m=1; %mass of the ball in kg theta_0=[0;3]; %Angular displacement=0 rad,Angular velocity=3 rad/sec at t=0 t_span = linspace(0,20,100); %Time…

FORWARD KINEMATICS PROGRAM FOR 2R ROBOTIC ARM l1=4; %length of first arm l2=2; %length of second arm theta1=linspace(0,90,6); %Change in angle of first arm theta2=linspace(0,90,4); %Change in angle of second arm x0=0;y0=0; ct=1; for i=1:length(theta1) %Finding length of theta1(Total number of index values in theta1=6)…