Introduction In this project, we will simulate an incompressible-laminar-viscous flow through a backward-facing step geometry using OpenFoam. OpenFoam is an open-source CFD software developed using the C++ programming language. Terminology Incompressible flow - A flow is said to be incompressible if the density at…
Krishna Mundada
updated on 23 Apr 2022
Project Details
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Read more Projects by Krishna Mundada (33)
Senstivity Analysis Assignment
Intro Chemical reactions such as CH4 + 2O2 + 7.52 N2- > CO2 + 2H2O + 7.52N2 are not a single reaction mechanism. Instead, the reactants have to go through many intermediary reactions for the products to form. For the reaction equation shown above, i.e; the combustion of Methane, there are almost 300+ intermediatory…
06 Apr 2023 12:19 PM IST
Adiabatic Flame Temperature calculation
The AIM and Code is explained in the Coding window. Introduction Adiabatic Flame Temperature Adiabatic flame temperature is the maximum temperature that can be obtained by heating a fuel. Since it is adiabatic, there is no Heat loss. Adiabatic Flame Temperature can serve as an indicator for comparision of different…
06 Apr 2023 09:37 AM IST
Handling Mixtures with Cantera
Question 1. Use the "moles" method/function, calculate the number of moles of the object A and explain how it is calculated analytically. You need to use this after line number 9 by using the predefined function ‘A.moles’ Hint : For the analytical part you need to calculate the number of moles in…
06 Apr 2023 09:36 AM IST
Combustion Efficiency Calculation after Preheating
Combustion In layman's terms, combustion is the burning of any substance in presence of air (more specifically, an oxidizer). All modern-day engines use combustion. When combusted, the products formed are at high temperatures and have high velocity. These exhaust gases are used to rotate turbine blades/shafts to generate…
06 Apr 2023 09:36 AM IST
Multivariate Newton Rhapson Solver
In this article/project, we will write a python script for solving a set of non-linear coupled Ordinary Differential Equations. Consider the below set of equations. Properties of the above equations Non-linear - There are terms of second order. ODE - Differentials are Ordinary and not partial or substantial. Coupled -…
06 Apr 2023 09:36 AM IST
Auto ignition using Cantera
Can we burn something without fire? Yes. The essential components required for burning something are Fuel, an oxidizer, and a Heat source. Fire is one of a kind of heat source, but not the only one. Thus, we can burn stuff without fire. In fact, one of the most common auto-mobile engines called the Diesel…
06 Apr 2023 09:35 AM IST
CFD meshing on Turbocharger
Aim - Surface and volumetric meshing of a turbocharger using Ansa. Procedure - 1. Import the geometry 2. Clean up the geometry Remove Single cons, either delete them or convert them to double cons/triple cons by closing the surfaces. Close all the open surfaces, even inlets and outlets. 3. Assign PID's Assign…
17 Mar 2023 04:15 PM IST
Surface wrap on Automotive Assembly
Objective - Surface wrapping on an Automative assembly. In this project, we are going to do geometry clean-up and then assemble all the components and do a surface wrap of the assembly. Procedure 1. Geometry clean-up 2. Geometry simplification 3. Geometry assembly 4. Surface wrap Here is a link to…
17 Mar 2023 04:14 PM IST
CFD Meshing for Tesla Cyber Truck
Objective - To perform geometrical clean-up, and surface mesh a cyber truck. Tool - ANSA Procedure- 1. Import the geometry. 2. Geometry clean-up 3. Geometry simplification and PID Assignment 4. Removing cons close to each other and finding target length 5. Surface Meshing pid target length minimum maximum rear lights 15…
17 Mar 2023 04:14 PM IST
Simulation of flow through Pitot tube
To start with, a flowing fluid has three basic kinds of pressure. To understand this, lets take an example. Assume a hollow cuboidal object placed in a wind tunnel. When the tunnel is operated, the air atains some velocity. The pressure excerted by the air because of its velocity is called dynamic pressure. Dynamic pressure…
17 Mar 2023 04:14 PM IST
Turbulence modelling challenge
Turbluence is the one of the biggest mystery known to human kind. Because of its randomness, it is part one of those unsolvable million dollar phenomenon club. Luckily, even this randomness is not completely random, it does have some patterns. These patterns are none other than eddies. Trubluence models have been…
17 Mar 2023 04:13 PM IST
Moving zones approach in Fluent
In today’s topic, we will discuss about moving zones. Before discussing this phenomenon, one must first understand why do we need it. All the models and setups discussed earlier had stationary objects under study. Hence, the mesh around it was also stationary. But, not every study/case has stationary objects. In…
17 Mar 2023 04:13 PM IST
Unsteady moving zones Approach
In today’s topic, we will discuss about moving zones. Before discussing this phenomenon, one must first understand why do we need it. All the models and setups discussed earlier had stationary objects under study. Hence, the mesh around it was also stationary. But, not every study/case has stationary objects. In…
17 Mar 2023 04:13 PM IST
Noise modelling over Ahmed body
Introduction The Ahmed body is a very generic and simplified model of a car. It was first developed by Ahmed and hence the name Ahmed body. A lot of work has been done on the Ahmed body, both computationally and experimentally. A wide variety and range of data for the Ahmed body are present in the form of literature. For…
17 Mar 2023 04:13 PM IST
Shock Simulation in SCRAM Jet
SCRAM JET A great man once said, “The Faster, the better”. I don’t know who quoted this, but, if no one did it yet, I should probably copyright this line. SCRAM Jet’s were invented to do this exactly, i.e, move faster. SCRAM jets stand for Supersonic Combustion RAM jet’s. Both SCRAM and RAM…
17 Mar 2023 04:12 PM IST
NACA 23012 performance analysis
In this article/project, an airfoil's performance will be evaluated at various angle of attacks in both subsonic and supersonic range. Selection of Airfoil Ansys Simulation Model Extract the coordinates of the airfoil from Airfoiltools.com and then import these into SpaceClaim Create a wind tunnel around it. Mesh…
17 Mar 2023 04:12 PM IST
Converging diverging nozzle
Aim - Simulation of flow through a C-D Nozzle. Tool used - Ansys Fluent Procedure 1. Geometry creation Inlet, throat and outlet radius are known. A three point arc passing through these points would give us a smooth curve, which will act as the wall of the C-D Nozzle. 2. Mesh generation and providing named selections…
17 Mar 2023 04:11 PM IST
CFD Meshing for BMW car
Aim - To surface mesh a BMW car model for wind-tunnel analysis. Tool used - ANSA Procedure - 1. Use fine option over the entire region to smoothen the curves. This tool basically uses a length criteria to smoothen the surfaces. 2. Clear the single Cons Make necessary changes to the geometry to clear single cons.…
17 Mar 2023 04:10 PM IST
Surface meshing on a Pressure valve
In previous projects, we have done volumetric meshing and analysis of flows. But what about the solid in which the fluid is meshing. It requires meshing too. Aim Surface Meshing of a Pressure valve using Ansa. Procedure Import the geometry file into Ansa. Geometry Clean upPerform checks and remove single cons by…
17 Mar 2023 04:10 PM IST
Parametric study on Gate valve.
As a child, whenever I washed my hands, I was curious how the tap worked. How is the flow controlled by just rotating the hand wheel? In this project we are going to see how these taps work and what is the impact of rotation of the handle. A typical old modelled gate valve tap (I lived in a pretty old house) would look…
17 Mar 2023 04:09 PM IST
Simulating Combustion of Natural Gas.
In this project, combustion of Methane will be simulated in a simple combustion chamber using Ansys Fluent. Introduction Combustion in my opinion is one of the most important process in the development of human-kind. Tons of our daily life operations and consumables won’t be available, if combustion wasn’t…
11 Mar 2023 12:13 PM IST
CHT Analysis on Exhaust port
Heat transfer in solids is dominated by conduction and in liquids, it is mostly convection including a negligible amount of heat generation from viscous effects and density dependence on velocity and temperature. Usually, the fluid is the energy/heat carrier. Forced convection is a very common way utilized across various…
08 Aug 2022 03:25 PM IST
Rayleigh Taylor Instability
Introduction A stratified fluid is a fluid with density variations from one point to other. There are two kinds of stratified fluids. The first kind is where the density change is abrupt, where the graph between altitude and density looks like a downward step. An example of such a case is the interface between the flow…
08 Aug 2022 03:24 PM IST
CHT Analysis on a Graphics card
Intro/Theory Ever wondered why a game works smoother in your friend’s PC and structs on yours? I know how it feels, been there myself. It is because of the systems specs. Some of the important once being storage device type (SSD/HDD), number of cores, RAM, GPU etc. For gamers, the most important spec is the GPU i.e.,…
08 Aug 2022 03:23 PM IST
External flow simulation over an Ahmed body.
Introduction The Ahmed body is a very generic and simplified model of a car. It was first developed by Ahmed and hence the name Ahmed body. A lot of work has been done on the Ahmed body, both computationally and experimentally. A wide variety and range of data for the Ahmed body are present in the form of literature. For…
14 Jun 2022 03:54 PM IST
Mixing Tee
AIM To perform and analyze study state simulations of Tee joints in pipes, for various cases of pipe lengths and Momentum ratios and verify the results with Analytical values. Hot inlet velocity = 3m/sHot inlet Temperature = 36 degreesCold inlet Temperature = 19 degrees Case 1: Shorter Tee 1.1- Momentum Ratio = 2 1.2-…
06 Jun 2022 04:45 PM IST
Validation studies of Symmetry BC vs Wedge BC in OpenFOAM vs Analytical H.P equation
In this project, A laminar incompressible fluid flow through a cylindrical pipe is simulated using symmetry and wedge boundary conditions in OpenFoam and the results are validated with Analytical results obtained from MATLAB. Hagen-Poiseullie's law Hagen-Poiseullie's law governs the Laminar incompressible flow. It gives…
06 Jun 2022 04:44 PM IST
Simulating Von-Karman Vortex-Street
Ever wondered why the coffee falls on the ground or sticks to the cup while you are pouring it from one cup to another. Yes, we have all been there, and there is a name to our little, yet annoying problem. It is called the Coanda effect. It is the reason why an aircraft flies. Coanda effect The Coanda effect…
06 Jun 2022 04:44 PM IST
ANALYSIS AND STUDY OF COVID-19 DATA USING BENFORD’S LAW.
Abstract The Covid19/Wuhan virus knocked out the feet of everyone in 2019. Mankind has suffered a lot, and the global economies were down. But, like always, together we have managed to overcome the situation. Rapid vaccinations brought a sense of relief to people. During the pandemic, many numbers/variables were recorded…
29 May 2022 09:58 AM IST
Solving the steady and unsteady 2D heat conduction problem
2D Heat Conduction equation is a partial differential equation that explains how heat gets distributed over a while. Based on the time, the transfer of heat occurs may occur in two ways Steady-state condition Transient State condition For any system to achieve a steady state, it has to first undergo an…
23 Apr 2022 06:01 PM IST
Simulation of a 1D Super-sonic nozzle flow using Macormack Method in MATLAB
This project is about simulating flow in a C-D Nozzle using McCormack method for solving the conservative and non-conservative form of governing equations. To understand what is a conservative method and a non-conservative method, I strongly suggest the reader go through the works of JD Anderson or Malalashekara. Note…
23 Apr 2022 06:01 PM IST
Simulation of a backward facing step geometry using OpenFOAM
Introduction In this project, we will simulate an incompressible-laminar-viscous flow through a backward-facing step geometry using OpenFoam. OpenFoam is an open-source CFD software developed using the C++ programming language. Terminology Incompressible flow - A flow is said to be incompressible if the density at…
23 Apr 2022 06:00 PM IST
Simulating a Laminar Flow through a pipe using OpenFoam
In this project, A laminar incompressible fluid flow through a cylindrical pipe is simulated using OpenFoam and is validated using Analytical results obtained from MATLAB. Hagen-Poiseullie's law The Laminar incompressible flow is governed by Hagen-Poiseullie's law. It gives the pressure drop in a Laminar incompressible…
23 Apr 2022 05:59 PM IST