Week 3 - External flow simulation over an Ahmed body.

AIM:- Calculate the Wheel Arch gap at required points and check whether the car passes the European standard. WHEEL ARCH:  The wheel arch is the semicircular part positioned above the wheel of a vehicle. The most important body change was that the front wheel arch was cut higher into the fender. Corrosion…

Aim To calculate section modulus of hood and optimize the design to have improved section modulus. Section modulus:- Section modulus is a direct measure of a strength of any cross sectional area of an object about an reference axis. The formula of section modulus is given by, S=I / Y Where,I = Moment of inertia (mm^4)Y…

Aim/Objective : To do surface wrap over assembled parts (engine,transmission and gear box) Target length for Wrap = 3mm Procedure : First the model is loaded on to ANSA Unwanted surface are deleted without damaging the outer shape of the geometries. Single cons are resolved mainly here as it would affect negetively on…

Aim: CFD meshing in BMW car Procedure: To perform CFD meshing in BMW car by following steps: 1) Clear the geometrical errors/topo clean up 2)Assign PIDs 3)Surface meshing 4) Create Wind tunnel 5) Volumetric meshing Steps - Resolving Geometrical Errors - Import the Geometry. You are in the "Topo Deck" by default.…

AIM: For the given model, to check for the geometrical errors to make appropriate volumes, create and assign PIDs. To 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…

Aim:- To study surface meshing on given geometry, Making three different models with 3 different target lengths. Geometry: The model provided has many flaws which are to be corrected before meshing Given Geometry As we can see there are many problems there are many single cons and open holes in geometry So we can perform…

  Aim :- To design a Hood outer panel, inner panel and the necessary reinforcements by the given Master section and design parameters. Theory :-  Hood is a main component of front portion of a car. It is an opening body panel that covers the engine in front engine vehicle. It consist of an outer panel…

Under-Body Coating: Underbody coating is usually a dense cladding (often based on rubber) applied uniformly to the undercarriage of the automobile. It is normally sprayed or painted on when the car is just out of the dealership and is clean. But even if you are getting the undercoating applied after a couple of years,…

AIM: DETAILED REPORT ON BENCHMARKING To prepare a report explaining what is Bench-marking , Compare at least 4 Vehicles and Provide a Preoper conclusion for the report ,suggesting a suitable vehicle among the comparison made. WHAT IS BENCHMARKING ? It is the process of comparing one's business process and performance…

Aim:-> To perform discretization of intake manifold with converting it in 1D circuit model from 3D model and observing effect of discretization length on result.    Theory: Discretization is the splitting of large parts into smaller sections to improve a model's accuracy. There are two ways in which a…

Aim:  To understand the concept of converting High-Fidelity Engine Model to Fast Running Model(FRM) and also building FRM Model using FRM builder approach. Objective: To understand the concept of converting Engine Model to Fast Running Model(FRM) from Tutorial-9. Building FRM Model for following configuration…

AIM: List down different TC and locate examples from GT Power Explore tutorial number 6 and 7 Plot operating points on compressor and turbine maps In which application Variable Geometry Turbine is beneficial? Explore example- Diesel VGT EGR and understand the modelling part SOLUTION: 1. LIST DOWN DIFFERENT TC AND LOCATE…

Aim: Basic Calibration of Single cylinder CI-Engine Objective: 1.Compare SI vs CI and list down differences (assignment no 2-SI) 2.Comments on following parameters BSFC Exhaust Temperature A/F ratios 3.Change MFB 50 and observe impact on performance Comparison between SI and CI engine Homogeneous mixture: In SI engine,…

AIM : To run the single cylinder SI engine setup at 1800 rpm and list down parameters such as air flow rate, BSFC, BMEP, In cylinder pressure. To run the same setup at 3600 rpm and to increase the output by 10% INTRODUCTION: A spark-ignition engine (SI engine) is an internal combustion engine, generally…

1. GT-SUITE : GT-SUITE is a single software package for modeling and simulation of systems in automotive and transportation engineering and beyond. It is based on a multi-physics platform, but offers higher level,added-value toolboxes specifically tailored to a continually broadening set of applications: • Engine…

  Aim: To setup and perform the simulation of combustion process with open-w-piston and omega piston for Diesel engine. Software used: Converge CFD Objective: To run the simulation for Open W-piston and Omega piston and post process the results using PARAVIEW. Characterize the Emissions Create cut-plane animations…

Objective: To simulate the Full-hydro case setup of PFI.            1. What is the compression ratio of the engine?           2. Calculate the Combustion efficiency of the Engine?           3. Determine Power and torque of engine…

OBJECTIVE: To perform surface preparation and boundary flagging tasks on our IC Engine case and setup a No Hydro simulation. PROCEDURE: When importing our geometry and running the diagnosis in Converge CFD we are prone to get a lot of errors in the design geometry. First we flag recognisable boundaries and hide certain…

Aim : To set up a combustion simulation with the details given in the challenge and to study different properties of combustion by post processing the results obtained by the calculation of the full hydrodynamic set up of the given geometry. Objective : 1. What is the compression ratio of this engine? 2. Why do we need…

1. Title - Surface preparation and Boundary Flagging. 2. Objective – Import the CAD model of IC engine into converge and run diagnosis. Look for errors and solve them, without compromising actual model. Setup the case for no hydrodynamic simulation, solve it and create animation in Paraview to see valve and…

SHOCK TUBE SIMULATION Aim :- Main goal of this challenge is to simulate shock tube problem, to see what happens when diaphragm is ruptured in the shock tube channel and to capture how the flow will be induced. Furthermore, we intend to understand how the "Events" work in "Converge Cfd". Theory :-   The shock tube…

Conjugate Heat Transfer Simulation Aim:- Setup the CHT simulation flow through the pipe in converge CFD. Maintain the inlet Reynolds number as 7000 Turn on the Y+ value before exporting all the setup files. Run grid dependence test by showing outlet temperatures are converging to a particular value. Find out the effect…

Aim :- To perform prandtl meyer shock problem. Introduction :- Prandtl Meyer expansion fan is a two dimensional simple wave. It is a centered expansion process that occurs when a supersonic flow turns around a convex corner. The fan consists of a finite number of Mach waves diverging from a sharp corners. When a flow…

                                                                               Transient  State Simulation of Flow…

Steady state simulation of flow over a throttle body Aim:- Set the steady-state simulation for flow over throttle body case setup in the converge. Export all the input files and run the simulation using Cygwin. Plot velocity and pressure contours plot for the flow inside the elbow pipe. Show mesh (i.e surface with…

AIM The aim is to Simulate the flow of air over Backward facing step OBJECTIVES The case should be run with 3 different mesh sizes Post processing of the flow parameters BACKWARD FACING STEP Backward-Facing Step (BFS) flow is one representative separation flow model, which is of significance in both theoretical and engineering…

AIM. To solve the Channel flow simulation using CONVERGE CFD I.THEORY Channel flow is an internal flow in which the confining walls change the hydrodynamic structure of the flow from an arbitrary state at the channel inlet to a certain state at the outlet. The simplest illustration of internal flow is a laminar flow in…

  AIM:- To perform the study on combustor model using Ansys Fluent Objective:-  - To perform the combustion simulation of a non-premixed model - To study the effect of the chemical reaction on adding the water content in the fuel Theory:- Combustion or burning is a chemical process where any fuel has a reaction…

`ṁ = d m /d t`Aim:  To perform a parametric study on the gate valve simulation by setting the opening from 10 % to 80%. Objectives: Obtain the mass flow rates at the outlet for each design point Calculate the flow coefficient and flow factor for each opening and plot the graph Discuss the results of the mass flow…

AIM : To perform analysis on cyclone separator and calculate the separation efficiency and pressure drop.   OBJECTIVE :  - To write a few words about any four empirical models used to calculate the cyclone separator efficiency.  - To perform an analysis on a given cyclone separator…

Aim:-Conjugate heat transfer analysis on a graphics card Problem statement: Perform a steady-state conjugate heat transfer analysis on a model of a graphics card. You can use appropriate materials of your choice for the simulation. Make sure to properly define the correct solid and fluid zones. Refer the video for further…

Objectives: some practical CFD models that have been based on the mathematical analysis of Rayleigh Taylor waves explain how these mathematical models have been adapted for CFD calculations. Perform the Rayleigh Taylor instability simulation for 2 different mesh sizes with the base mesh being 0.5 mm. Compare the results…

Aim: To run simulation to anlyse Conjugate Heat transfer in Exhaust port. Objective: 1.To understand why and where a CHT analysis is used. 2.Run the CHT simulation using different turbulence model and justify results. Introduction: Conjugate Heat Transfer (CHT): The Conjugate Heat Transfer (CHT) analysis type…

Aim: External flow simulation over an Ahmed body. Objective: The objective of this project is to determine the aerodynamic forces on the Ahmed body such as drag and lift coefficient and to perform the grid independence test. The expected results will include 1. Velocity and pressure contours.  2. The drag coefficient…

Aim: To Simulate the flow over a cylinder and explain the phenomenon of Karman vortex street.   Objective: 1.To Calculate the coefficient of drag and lift over a cylinder by setting the Reynolds number to 10,100,1000,10000 & 100000. (Run with steady solver) 2.Simulate the flow with the steady and unsteady…

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…

# IMPORTING IMP MODULE import math import numpy as np import matplotlib.pyplot as plt #Taking inputs from user file_name=input("Enter file name :") print('------------------------------------------------------------------') #checking for valid file if file_name == 'engine_data.out': print('File found succesfully!! you…

Curve fitting- can be defined as the process of constructing a curve or mathematical function that has the best fit to a series of data points, subject to constraints. In this project, the curve for Specific heat as a function of Temperature will be plotted and the plot will be compared with the actual plot. The specific…

Aim:  To write a Python program which solves the equation of motion of a simple pendulum with damping. Objective: To learn how to solve an Ordinary Differential Equation (ODE) using Python To solve ODE of a simple pendulum that represents its equation of motion To simulate the pendulum motion Understand the importance…

Aim Plot Pressure-Volume(PV) Diagram of Air Standard Cycle and Calculation of thermal efficiency Using Python Objectives  Plot Pressure-Volume (PV) Diagram of Air Standard Cycle Calculate Thermal Efficiency of Air Standard Cycle Theory:  The Otto cycle is the ideal cycle for spark-ignition reciprocating engines. In…

Title of the Project: Advanced Sheet Metal-II Design Using NX  Objective: To design a Sheet metal Metal bracket-II using Siemens NX CAD application Introduction: DESCRIPTION: Sheet metal: Sheet metal is metal formed by an industrial process into thin, flat pieces. Sheet metal is one of the fundamental forms…

Project Title : Sheet Metal design of bracket using NX CAD Objective :  To create a bracket using advanced sheet metal tools in NX CAD.  Introduction :  What is Sheet Metal -  The sheet metal is formed by an industrial process into thin, flat pieces. Sheet metal is one of the fundamental forms used…

Title : Sheet Metal Design Using NX Cad Challenge_5_Odd Shaped Enclosure Part Image :   Objective : To develop a Sheetmetal part in NX sheet metal that contains odd shaped geometry which is not achieved using traditional approach of  sheet metal design. Therory : Creating fast, accurate flat patterns is…

ADVANCED SHEET METAL DESIGN OF BOX ASSEMBLY USING SIEMENS NX CAD OBJECTIVE: To design a sheet metal box assembly using Siemens NX Cad. To create a drafting of the same part in A4 sheet.   INTRODUCTION:  Sheet metal is a metal formed by an industrial process into thin, flat pieces. Sheet metal can be…

  Advanced Sheet Metal Design Using NX Cad Challenge 1 Casing Design Title of the Project: Advanced Sheet Metal Design Using NX Cad Challenge 1 Casing Design Objective: To design a Casing with the help of NX advance sheet metal. Introduction: NX Sheet Metal provides a set of tools within the NX design environment…

Project title :- Radar mast & final assembly of yacht Objective :- The objective of the project is to design & model part of Radar mast & final assembly of American Predator Yacht and assembling to create the Photo-Realistic rendering of the yacht. Introduction :- In this project the American Predator Yacht…

1.AIM:- Modeling & Rendering American Chopper. 2.OBJECTIVE:-To Design and model each component required to make assembly of an American Chopper in Solidworks and finally make a Photorealistic Rendering of the complete assembly of American Chopper. And to get a better insight of the features and tools which are…

AIM:- To create a side pole crash analysis on Neon car model using hypermesh and radioss solver. OBJECTIVE:- 1. Import the neon car model to the hypermesh. 2. Create a circular rigidwall and type7 contact interface in the model. 3. Create intial velocity, intrusion cards and crossection cards using frame and skew. 4. Change…

QUESTION : Frontal crash-BIW Check unit system and either follow[Mg mm s] or [Kg mm ms]. Create appropriate interface ,friction 0.2 and recommended parameters. Make sure of no penetrations and intersection. Correct rigid bodies if any issues. Create rigid wall with friction 0.1. Compare the model weight with the full scale…

   Aim :-  To Create the mesh for bumper assembly, mesh size should be 6mm and simulate the given model with seven different cases in radios as per problem statement and compare it using various plots.   Questions: Create the mesh for bumper assembly,mesh size should be 6mm.  Run the…

Assignment 4-RADIOSS Material Laws Challenge  Aim : - Run the given model with different material parameters & compare all the cases. Materials: - The overview of the materials in the RADIOSS library can be classified as shown below:  We will have a look at the following material laws: Law 1 –…

AIM:- To perform the 2D Element Formulation using the hypermesh radioss model software. OBJECTIVE:- The following are the given object. Comparison results in between simulation & improved shell element properties 1.Using the crash beam file from the previous assignment, change the run time to 55 ms. 2. Change the number…

Aim :- 1. Check the material properties of the rail component and calculate the speed of sound in steel rail 2. The length of the rail is about 1000 mm. calculate the time takes for a shock wave to travel from one end of the rail to the other. 3.Time for sound to travel the length of the rail 4.Edit the…

OBJECTIVE: Carry out geometry cleanup operation on the given models. Extract mid surface. Clean mid-surface geometry. Ignore holes less than dia 5mm. Create a 2D mesh with target length 5mm, min 3.5mm max 7mm. Assign proper thickness, by creating a generic property. Save in .hm format. PROCEDURE: Part 1: IMPORT: Given…

Aim :- Follow the below-mentioned quality criteria, mesh the component given below and assign thickness: Target Element Length = 5 Units S.N Quality Criteria  Value  1 Aspect Ratio  5 2 Skewness 45 3 Warping 15 4 Taper      0.5 5 Min. Length 2 Units 6 Max. Length 8 Units 7 Min angle…

Aim:- 1.To Simulate the 3 test cases from harness dashboard & detail report on results.          2.What is coulomb?Refering above model & explaning how BMS implements couomb counting for SOC estimation.   Study 01:- To Simulate the 3 test cases from harness dashboard & detail report…

Aim:- Understanding & preparing the lithium ion battery material & checmical reaction occuring due to cathod & anode of LCO,LMO,NCA,MNC, LFP & LTO type lithium ion battery. Theory:- What is Battery:- A battery can be defined as an electrochemical device (consisting of one or more electrochemical cells)…

Aim :- To calculate Parsing NASA Thermodynamic data Theory:-  1.In the NASA format, coefficients of the NASA thermodynamic equations - heat capacity at constant pressure, standard enthalpy change and standard entropy change, for two different temperature regimes were available. The Group additivity format comprises…

Aim :-  To study the genetic algorithm & finding the global maxima of the function. Theory:- In computer science and operations research, a genetic algorithm (GA) is a metaheuristic inspired by the process of natural selection that belongs to the larger class of evolutionary…

Aim :- To Calculate the Net Work Output & Back Work Ratio for Rankine Cycle Simulator.   Theory:- The Rankine cycle is an idealized thermodynamic cycle describing the process by which certain heat engines, such as steam turbines or reciprocating steam engines, allow mechanical…

Aim :- To slove the 2nd order ODE equation Theory :-  1.What is the velocity:- Velocity is the rate of change of displacement. 2.What is acceleration:-Acceleration is the rate of change of velocity. 3.What is simple pendulum :- A simple pendulum is a point mass suspended by a weightless and inextensible string…

Aim :- Forward kinematics of a 2R Robotic Arm.   Theory :- Kinematics is a subfield of physics, developed in mechanics, that describes the motion of points, bodies,and systems of bodies (groups of objects) without considering the force that cause them to move.Kinematics, as a field of study, is often referred…