Week 8 - Natural Convection-II

Flow over Ahmed's 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 flow field around…

Objective : To Identify & clean up all the topological errors in the given Tesla Cyber Truck Car model. To create a surface mesh. To Create a wind tunnel around Tesla Cyber Truck Car. To create a volumetric mesh to perform an external flow CFD analysis simulation.   Introduction : ANSA :  ANSA is a Computer-aided engineering tool…

AIM:- To mesh the given floor panel for the given quality criterias without any failure in the elements. Project description:- FLOOR PANEL GIVEN:-   Procedures for Meshing a 2D component:- i) Importing the CAD model into ANSA:- The cad model is imported into the Ansa software by clicking File ---> New command. ii) Geometry…

Objective : To Identify & clean up all the topological errors in the given Tesla Cyber Truck Car model. To create a surface mesh. To Create a wind tunnel around Tesla Cyber Truck Car. To create a volumetric mesh to perform an external flow CFD analysis simulation.   Introduction : ANSA :  ANSA is…

Aim: The aim of this project is to surface wrap an automotive powertrain. The CAD models to which can be found here. Engine Transmission Box Gear Box Objective: The objectives of this project are To check for geometrical errors and delete surfaces that are unwanted for the surface wrap. To Merge all 3 models and perform…

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. Objective: - Target lengths for the different parts of a model are as follow:…

Aim: For the given model of a turbocharger, check for geometrical errors to make appropriate volumes. Create and assign PIDs accordingly. Create surface mesh and use that to create a volumetric mesh. Objective: Perform surface mesh with the given target lengths as per PIDs. Blade stage-1 = 1 mm Blade stage-2 = 1 mm Impeller…

Objective: The objective of this project is to perform preprocessing i.e. geometry cleanup, mid surface extraction, and 2D shell meshing for the hood component of a car. After meshing, component thickness and material need to be assigned to the mesh. And the mesh should follow the following quality criteria, S.no. Quality…

AIM: This project aims to mesh a pressure valve using three different mesh sizes and find out the optimal mesh size. OBJECTIVES: Check for geometrical errors and perform Topology cleanup. Set three different target lengths as three different cases and mesh the model. Target length = 1mm, 3 mm, and 5 mm (i.e. 3 cases).…

Aim: Solving a simple pendulum's second-order ordinary differential equation and animating the damping effect. Objective:  To change an ordinary differential equation of second order into an equation of first order. Using the built-in MATLAB function for solving ordinary differential equations to create the function.…

AIM:- Rankine Cycle Simulator  Introduction:- A Rankine cycle is an idealized Thermodynamic cycle that governs the working of a Heat Engine. In the Rankine cycle, the friction losses of a heat engine are neglected. It is a cycle that converts heat into mechanical energy which usually is converted into electrical…

AIM:- Parsing NASA thermodynamic data Writing MATLAB coding for reading a NASA thermodynamic data file. Coding of extracting the coefficient from the file. Coding of calculating thermodynamic properties with the help of extracting co-efficient for a particular species. Calculate the molecular weight of each species…

AIM:-   Write a code in MATLAB to optimize the stalagmite function and find the global maxima of the function. Clearly explain the concept of genetic algorithm in your own words and also explain the syntax for ga in MATLAB in your report. F maximum Vs no. of iterations.  Introduction:-…

AIM:- 2R Robotic Arm Challenge   MATLAB Code:- % Program for 2R Robotic Arm clear all close all clc %Inputs L1=1; L2=0.5; theta1=linspace (0,90,14); theta2=linspace (0,90,14); ct=1; for i=1:length(theta1) THETA1=theta1(i); for j=1:length(theta2) THETA2=theta2(j); x0=0; y0=0; x1=L1*cosd(THETA1); y1=L1*sind(THETA1);…

Aim:- The objective of the project is to create a data center model using macros in Icepak. The main parts of the data center are Computer room air conditioning (CRAC), server cabinets, power distribution units, and perforated tiles. Analyze the flow distribution and behavior of temperature in the server stacks. Introduction:…

Aim: To design and evaluate the flow domain comprising a portion of the Hexa grille inside the domain. To study the parametric method, the parameter trails, and the primary and compound functions are to be reported for the challenge. Objective: The cabinet has 160mm in length with the inlet and outlet openings at…

Objective:- The main objective of this project is to provide analysis and standards for modeling MRF fans using ICEPAK. Theory: The MRF model is, perhaps, the simplest of the two approaches for multiple zones. It is a steady-state approximation in which individual cell zones move at different rotational and/or translational…

AIM:- The objective of the project is to create a PCB model by importing the PCB layout, library files, and traces to Ansys Icepak and set up the physics & solve the thermal model. Objective:- A PCB board, library files, and traces are imported to create the model. The model is first solved for conduction only, without…

Aim: To build the model for a low-voltage control panel, as per the given specifications, and perform a steady-state thermal analysis of the same. Introduction: Low voltage control panel:- A low voltage panel is a component of an electrical distribution system that divides an electrical power feed into branch…

Aim: Simulate cooling of Low Voltage Panel using natural convection heat transfer. Objective of this challenge is to authenticate the increase in temperature for the low voltage control panel for the configuration in a statement. Perform a simulation in accordance with the regulations provided for in the challenge.…

Aim: To perform thermal simulation of the given model i.e Hanging node. Objectives: Unpack the model into an icepack Generate mesh with Multi-level settings to reduce The of nodes and elements (Done in assignment 2 weeks 5) Perform thermal simulation of model in natural convection mode Plot the contours of residuals and…

Aim: To perform the flow and thermal simulation on a power board assembly. Objective: The first step is to simplify and convert the given CAD geometry from Space-Claim to ICEPK objects. After converting, we properly mesh the board in ICEPK. In which the above two steps have already been done in the 3rd and 4th challenges.…

Aim:For the given Hood model, Take the mid surface for all the components after checking the geometrical errors and mesh the mid surface with the given element Quality criteria. (Refer to the table below for the Quality criteria) 1. Procedure:First, the hood model is imported into the ANSA. The hood model contains five…

Theory:Forced convection is a mechanism or type of transport, in which fluid motion is generated by an external source (like a pump, fan, suction device, etc.). Alongside natural convection, thermal radiation, and thermal conduction it is one of the methods of heat transfer and allows significant amounts of heat energy…

Objective:-  The objective of the project is to create multi-level meshing to resolve CAD objects in the Icepak model and reduce the original mesh elements. Assignment:- Create non-conformal mesh assembly and use mesh separately option with slack values. Use set uniform parameters and use average on 1 assembly, in…

Objective:-  Perform Computational analysis for the Cold plate and also create the non-conformal mesh for the model. TASK Create non-conformal mesh assembly. Solve for Flow and Temperature model & choose zero equation turbulent model and setup gravity vector. Setup transient simulation with an initial velocity…

Objective:- The objective of the project is to convert CAD shapes into Icepak primitive shapes in Spaceclaim & modify the components in Icepak & define the correct physics. Procedure:- The given CAD model of an electronic enclosure assembly is imported into SpaceClaim where the following steps are carried…

Objective:- To create the shell (2-D) meshing for the Car Side Door Panel by eliminating geometrical errors and considering the given element quality criteria using Hypermesh. To import the model into the Hypermesh module and check for geometrical errors and clear them so that we can extract a Mid-surface manually. To…

Objectives: To geometrically clean the model for any error on it. To extract a mid-surface of the component. To clean and defeature the Midsurface so as to avoid any minimum length errors while meshing. To mesh the mid surface while trying to minimize the number of tria and their concentration. Clear all elements that…

Objective To mesh and apply the appropriate connectors to the frame assembly model. To know about the terms and debug the connectors if failed. The specific connectors to be used to connect different parts ‘Right_Rail_2’ & ‘Front_truss_1’: ‘Seam-Quad (angled+capped+L)’ ‘Left_Rail_2’…

Objective:- To create tetra mesh for cover and hub, crank housing, and suspension assemblies according to the given quality criteria. For cover and hub, the target size, minimum size and maximum size of the element is 5mm, 2mm, and 7mm respectively. For crank housing and suspension assembly, the target size is 6mm. Tet…

Objective - To extract mid-surface and generate mesh on Hood using Hyper mesh. Methodology  Importing geometry and cleanup. Extracting Mid-surface and assigning properties. Meshing the surface within the given quality criteria. Procedure Geometry import, go to file >> Import >> select the file >>…

Mesh the Given component with the Size of 5 Units. Create 1D elements on the following component with given cross-section and DOF Rod element:- (Box) (A)Translational DOF should be Constrained with RBE2 link Beam element (I Section) (B) All DOF should be constrained with RBE3 link Bar element (C)  Constrain only x and y DOFs…

AIM:- 1. To Extract the mid-surface manually & mesh the geometry with quality. 2. To Extract mid-surface Automatically and mesh the geometry with quality. 3. Then Finally with the combination of both Extract auto mid-surface and manually mid-surface and then mesh the geometry with quality. PROCEDURE:- The following…

Objective 3-D simulation in Converge CFD to compare the emission and performance characteristics for a CAT 3410 diesel engine with different piston bowl geometry. Open-W Piston Omega piston Introduction In previous years of research has shown that the different engine configurations such as to increase the mixing of fuel-air…

Objective To simulate the full hydro setup of a Port Fuel Injected engine which uses Iso octane as the fuel. Introduction When fuel injection takes place due to the interaction of the liquid with the surrounding air there is a drag force which causes disturbances in liquid length. These disturbances propagate and if they…

Aim It is a flow simulation through a pipe to understand super-cycling in a conjugate heat transfer problem. Introduction The analysis type Conjugate heat transfer (CHT) allows the simulation of the heat transfer between Solid and Fluid domains by exchanging thermal energy at the interfaces…

Aim Cleaning and Mesh the Mesh model to define the correct property ID. Introduction Hood is a covering part of the engine compartment which is also known as the bonnet. Acts as a engine unit protector, and protects from environmental issues. Protects passenger from the frontal crash and plays a vital role in pedestrian…

Aim Study the effect of pressure and temp in Shock-tube. Introduction In a Shock Tube, the sudden expansion of a gas at high pressure into a gas at low pressure produces a plane shock wave that then propagates through a long-closed tube. The shock wave is used to produce a rapid increase in the pressure and the temperature…

Aim Cleaning and Meshing of the provided BMW M6 Model. Introduction As the car has several PID\'s there were many topological errors to clear and there are triple coons single coons as seen in the above model, the main aim is to clear those and to create a surface mesh. Above showing wireframe pic we see the three Colors…

Aim Cleaning the CAD model and Surface meshing the pressure Valve CAD model using ANSA. The problem in the Pressure Valve CAD Model I have observed in the cad model many problems are present. Surface missing Surface Interface Performed steps in completing the CAD file  Face > New > Coons > Select Coons >…

Aim Perform the meshing the turbocharger model using the ANSA. Cleaning the turbocharger part and Assign the PID\'S Do the surface and volume mesh of the turbocharger. Turbocharger A turbocharger, colloquially known as a turbo, is a turbine-driven forced induction device that increases an internal combustion engine\'s…

Aim Fluid Flow behavior when the throttle changes his position with time. Throttle Valve Throttle, Valve for regulation the provision of a fluid (as steam) to an engine, particularly the valve dominant the degree of gaseous fuel delivered to the cylinders of a heat…

Aim Study of the Prandtl Meyer Shock problem and effect of subgrid mesh. Shock wave The shock wave, constructive interference of sound created by an object moving faster than sound. Shock wave boundary interactions occur when a shock wave and a boundary layer converge and, since both can be found in almost every supersonic…

  A. In the given code, mole fractions of O2 & N2 are given as 0.21 & 0.79 we know that mole fraction = (number of moles of that species)/ (Total number of moles) from the reaction of methane (CH4) CH4+2O2+2(3.76)N2=CO2+2H2O+2(3.76)N2\">CH4 + 2O2 + 2(3.76) *N2 = CO2 + 2H2O + 2(3.76) *N2CH4 + 2O2 + 2(3.76)…

Combustion of Methane Gases A common example of the burning of gaseous fuel is the combustion of natural gas which mainly contains methane. One molecule of methane reacts with two molecules of oxygen to produce one molecule of carbon dioxide and two molecules of water vapor. Equation:-  CH4 + 2O2  == CO2 + 2H2O…

Aim Flow nature when the butterfly valve at a different position and create an obstruction in flow. Introduction A valve consisting of a rotating circular plate or a pair of hinged semicircular plates, attached to a transverse spindle and mounted inside a pipe in order to regulate or prevent flow. Butterfly valves have…

Aim Fluid flow behavior over the throttle body. Introduction The throttle is the mechanism by which fluid flow is managed by constriction or obstruction. It is located between the air intake filter and intake manifold. It regulates how much air can go into the engine, based on the input through the speed pedal. In this…

Aim In this study, we are doing the Matlab coding of a pendulum motion. A pendulum motion is a kind of second-degree ordinary differential equation. By doing this, we are able to understand the motion of many objects because there are many objects or component which follow the same order ordinary differential equation.…

Introduction “A centrifugal pump is a machine.” Every centrifugal pump includes an assembly of mechanical components that make the operation of the pump possible. This mechanical assembly includes the pump shaft mounted on bearings, the sealing mechanism that keeps the pump from leaking excessively, structural…

Ahmed Body The Ahmed body is a generic car body (a simplified vehicle model). The airflow around the Ahmed body captures the essential flow features around an automobile and was first defined and characterized in the experimental work of Ahmed. Complexly shaped, cars are very challenging to model and it’s difficult…

Abstract S-Shaped diffusing ducts are widely used in internal flow systems such as aircraft, car, etc. These ducts generally operate in steady and symmetric conditions but during some maneuvers, the nature of Reynolds number conditions ingested by the S-Shaped diffuser may vary with the conditions. Similarly, due to space…

Introduction Windmills have been assisting mankind to convert the energy contained in wind to many other useful forms for the last two thousand years. Today’s wind turbines are capable of converting a great amount of energy in the wind into electricity. This is due to the blades which are developed using state of…

Aim   The aim of the project was to calculate maximum temperature attained by the processor, find out heat transfer coefficients and potential hotspots on the model. Same results are compared for the two mesh variations. Introduction of Graphic Card A video card (also called a display card, graphics card, display…

Introduction Combustion or burning is a complex sequence of chemical reactions between a fuel and an oxidant accompanied by the production of heat or both heat and light in the form of either a glow or flames. A rapid combustion is a form of combustion in which large amounts of heat and light energy are released.…

Introduction The Rayleigh–Taylor instability or RT instability is instability of an interface between two fluids of different densities which occurs when the lighter fluid is pushing the heavier fluid. Kelvin–Helmholtz instability:  The Kelvin–Helmholtz instability can occur when…

1.Introduction Gearboxes are used to increase torque while reducing the speed of a prime mover output shaft (e.g. a motor crankshaft). This means that the output shaft of a gearbox rotates at a slower rate than the input shaft, and this reduction in speed produces a mechanical advantage, increasing torque. Gearbox…

Introduction A gate valve, also known as a sluice valve, is a valve which opens by lifting 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 (in…

Introduction Cyclones are devices that employ a centrifugal force generated by a spinning gas stream to separate particles from the carrier gas. In general, cyclone designs are of two types: the straight-through cyclone and the more common conventional reverse flow cyclone. The cyclone usually consists of both conical…

Conjugate Heat Transfer Analysis The term conjugate heat transfer is used to describe processes which involve variations of temperature within solids and fluids, due to thermal interaction between the solids and fluids. A typical example is the heating or cooling of a solid object by the flow of air in which it is immersed.…

Abstract Study the effect of helical and spiral type heat exchanger on the basis of fluid flow and heat transfer. In the present study, performance comparison is also performed for both type heat exchangers. Introduction Heat transfer between different fluids is one common physical process which occurs on a daily basis.…

Abstract The problem concerned with the mixing of mutually soluble liquids in turbulent flow in the pipe. In this problem, we use the momentum ratio that decides the velocity of fluids. Hot fluid at 30C and cold fluid at 10C at different velocities. In this, we observe the variation of the temperature of the…