Introduction to Aero-Thermal simulation using ANSYS Fluent

Introduction to Aero-Thermal simulation using Ansys Fluent

  • Domain : CFD
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A Quick Overview

The study of fluids to understand their behaviour in various environments has been made possible with the help of Computational Fluid Dynamics. With the advent of computers, CFD tools have been made easily accessible for the common man within the luxury of their living room. The use of these tools have helped shape many applications in the industry.

CFD can be applied to something that may seem to be as simple as the flow through a pipe to something as complex as the flow inside a combustion chamber. The same set of equations called as the Navier Stokes equations are solved for both cases but you need to employ additional equations when you want results from complex simulations. Understanding what to apply where is what we bring to you in this course.

Any CFD simulation has three parts to it’s process. The pre-processing part, the solver and the post processor.

The pre-processing part deals with prepping your geometry for the analysis. The computer cannot solve whatever geometry you throw at it. It needs to be “Discretized” first. What is this discretization? Well, it’s the process of converting your physical domain into your computational domain. The Navier Stokes equations are a set of Partial Differential equations but the computer can only solve algebraic equations. This is what takes place in the discretization process. It also helps the computer identify where it needs to solve the equations based on the material properties that we assign to the domain.

The solver part deals with making use of the N-S equations to get the relevant results. Applying the right boundary conditions and “Turbulence models” to simulate the flow is quintessential. The computer will not know what to do unless you tell it what you need. Setting up the solver is hence an important part.

After solving your simulation, you need to check the results. This is the post processing part. You get a lot of colourful plots, but you really need to understand what you are seeing on screen. The post processor will help you here.

In this particular course, you will be taken through all these steps using a commercial package called ANSYS.

ANSYS is a multiphysics simulation software that can be used for multiple purposes. For this course, we will follow the following tools for the three parts of the process mentioned earlier.
For the pre-processing part

  • ICEM CFD
    • ICEM CFD offers a wide variety of capabilities to properly create the mesh for your geometry. It is capable of creating both a structured and an unstructured mesh. It also has various mesh diagnostic tools to study the quality of the mesh that is created.
  • ANSYS Mesher
    • ANSYS Mesher is another pre-processing tool in the ANSYS package. It has similar capabilities as ICEM CFD but offers a lesser amount of control over the mesh.
      For the solver
  • ANSYS FLUENT
    • ANSYS FLUENT is an industry leading flow simulation software which is highly capable of simulating various types of flows.
      For the post processor
  • ANSYS FLUENT
    • ANSYS FLUENT has an inbuilt post processor which is capable of giving you all the results that you require.

Through this course, you will be taken through

  • Introduction to fluid flows and aerodynamics
  • Steps to create your domain in ICEM CFD using a tutorial
  • Introduction to Turbulence modelling
  • Setting up your solver for analysing a NACA0012 airfoil
  • Introduction to moving zones and compare the ways of simulating rotating components
  • Introduction to Computational Aeroacoustics and solve an acoustic problem using broadband solver.

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COURSE SYLLABUS

1Introduction to FLUID FLows

This week will take you through the basic theory on Fluid Mechanics and FLUID dynamics. We will cover the basic fundamental properties that are used to describe a fluid flow along with general CFD methods

  • Types of fluid properties
  • Newtonian and Non Newtonian fluids
  • Description of fluid flows
  • Overview of CFD methods

2Introduction to Aerodynamics

Aerodynamics plays a very important role while designing a particular product which is exposed to environments that will affect its purpose. In this video, you will learn

  • Role of aerodynamics in design
  • Parameters of focus
  • Instruments used in aircraft
  • Similarity parameters
  • Aerodynamic forces and moments

3International Standard Atmosphere

The properties of the atmosphere vary from one place to another. This resulted in the comparison of aircraft performance in different parts of the world to not be realistic. Hence, a common decision was made to create an “International Standard Atmosphere” for comparison purposes. In this video, you will learn

  • What exactly ISA is
  • How to calculate the properties according to height.

4Tetra/Prism generation in ICEM CFD

The quality of the mesh and the elements you use determines the accuracy of the result that you obtain. Using ICEM CFD, you will be introduced to steps to create a suitable domain for a helicopter fuselage. The domain will be meshed with tetrahedral and prism elements. Quality parameters to assess your mesh will also be introduced to you. In this video, you will 

  • Be introduced to ICEM CFD
  • Understand the steps to setup your domain in ICEM CFD
  • Generate a mesh for your geometry
  • Assess the quality of the mesh

5Introduction to flow over airfoil

You can find airfoils in many aerodynamic applications. If you can’t find it, then you would probably have to take a cross sectional view to properly visualize it. For example, the cross section of an airplane wing is in the shape of an airfoil. The airfoil shape helps in generating the necessary forces to help the airplane fly. In this video, you will

  • Be introduced to what an airfoil is
  • Understand the forces acting on an airfoil
  • Use ICEM CFD to generate the domain required to analyse the flow over an airfoil
  • Generate the mesh for two cases
    • Incompressible flow over airfoil
    • Compressible flow over airfoil
    • Assess the quality of the mesh

6Introduction to Turbulence modelling

You would have visually experienced turbulent flow of a fluid by simply opening the tap in your kitchen. The fluid flow will follow an unruly nature once you increase the flow. This is a simple example. Turbulent flows can have negative effects on your product when it flows through air. If you take the example of your car, having highly turbulent flow in certain regions can lead to sources of noise generation and can also affect the performance of your car. Through CFD simulations, it has been made possible to capture this turbulent phenomena to better design your product. In this video, you will

  • Be introduced to what exactly turbulence is
  • Learn why it is important
  • Understand how to model turbulent flows
  • Understand the turbulence models available in commercial CFD packages.

7Simulate the flow over a NACA0012 Airfoil

Using the mesh created in the previous week, you will be taken through how to setup a simulation to analyse the aerodynamic forces on a NACA0012 airfoil. In this video, you will ,

  • Learn how to setup your simulation for analysing aerodynamic forces on an airfoil
  • Analyse the results for various angles of attack

8Introduction to moving zones

There can be two types of motion in fluid flow problems. One is rectilinear and the other one is rotary. Till now, we spoke about rectilinear motion. In order to simulate rotary motion, you need a different approach. In this video, you will 

  • Learn about moving zones
  • Approaches to model moving zones
    • Moving reference frame
    • Moving mesh

Types of mesh encountered at interfaces

Run a simulation to understand moving zones

9Comparison of Moving Reference and Moving mesh approach

From the two approaches discussed in the previous video, we will use a turbomachinery model to compare the application of both methods and compare the results. In this video, you will

  • Use a turbomachinery component to compare MRF and MM approach
  • Setup the simulation with appropriate parameters
  • Analyse the results

10Transient flow over air compressor

An air compressor is a common turbomachinery component with a large number of moving parts. It is quite difficult to model the entire component. Hence, we will take a sector of the component and apply a periodic boundary condition to the geometry. We will use the FLUENT Console to employ periodic zones in the simulation. In this video, you will

  • Work on a sector a large air compressor
  • Setup periodic zones in FLUENT console
  • Setup the simulation to analyse the turbomachinery component
  • Analyse the results

11Introduction to Computational Aeroacoustics

Noise is generated by an aerodynamic body when it is moving through air. The shape of the body determines the sources that generate this noise. For a car, the mirrors, gaps between the wheels etc are regions of noise generation. Manufacturers use CAA( Computational Aero-Acoustics) to study such sources and minimise the discomfort caused by it to the customer. In this video, you will

  • Learn about acoustics
  • Learn about acoustic analogy methods
  • CAA methodologies

12Broadband Noise modelling

The broadband acoustic solver is one of the CAA methodologies mentioned in the previous section. In this video, we will use the broadband solver to analyse the noise sources over an Ahmed Body. An Ahmed body is a simplified car body that was developed in 1984. This model is used for validation purposes. In this video, you will

  • Use ANSYS Mesher to generate the mesh for your domain
  • Setup a symmetric model in FLUENT
  • Run the acoustic solver to analyse noise sources


Projects Overview

Project 1

Highlights

In this project, the student will have to setup the domain for analysis of flow over an airfoil at subsonic and supersonic regime. The airfoil will be analysed at 3 different angles of attack and the lift and drag coefficient will be compared in all cases

  • Create domain for flow analysis
  • Setup simulation for subsonic and supersonic regimes at
    • 50, 100, 150 angle of attack

Project 2

Highlights

In this project, using the CAA methodologies learned in the course, the student will have to perform an acoustic analysis of an automotive ORVM. 

  • Create the domain for analysis
  • Setup the simulation
  • Obtain high noise generating regions

WHO IS THIS COURSE FOR ?


  • For students of Mechanical and Automotive Engineering
  • Those who are interested in Automobile Sketching

SOFTWARE COVERED

Ansys Fluent

ANSYS FLUENT is an industry leading software used for predicting fluid flows, heat and mass transfer.


Flexible Course Fees

Choose the plan that’s right for you

Basic

2 Months Access

7000

Per month for 3 months

  • Access Duration : 2 months
  • Mode of Delivery : Online
  • Project Portfolio : Available
  • Certification : Available
  • Email Support : Available
  • Forum Support : Available
Premium

Lifetime Access

15000

Per month for 3 months

  • Access Duration : Lifetime
  • Mode of Delivery : Online
  • Project Portfolio : Available
  • Certification : Available
  • Individual Video Support : 12/month
  • Group Video Support : 12/month
  • Email Support : Available
  • Forum Support : Available
  • Telephone Support : Available
  • Dedicated Support Engineer : Available

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Frequently Asked Questions

1Who can take this course?

Engineering graduates or post graduates who wish to gain more knowledge in the field of aerodynamics

2What is included in your course?

In this course, the student is provided with videos to help them better understand
    • Numerical simulations
    • Aerodynamic theory
    • CFD methods
            o Mesh generation techniques
            o Modelling techniques
            o Moving mesh methods
    • Computational Aero acoustics methods
    • Broadband noise modelling

3What will the student gain from your course?

Student will gain insight on how to apply CFD to various aerodynamic applications by using ANSYS FLUENT. They will be able to generate the required mesh, setup the domain according to the size required and apply the relevant turbulence model to simulate airflow over the geometry.

4What skills are you teaching and how well are these tools used in the industry?

ICEM CFD is a tool that is extremely robust in generating the domain for your geometry. It’s a trusted tool in academic research. ANSYS FLUENT is an industry leading software used for predicting fluid flows, heat and mass transfer.

5What is the real world application for the tools and techniques will you teach in this course?

These techniques are used in the real world in automotive and aerospace industries.

6Which companies use these techniques and for what?

Many companies in the US use ANSYS extensively. Apart from that, companies like Ferrari and Volkswagen use FLUENT

7How is your course going to help me in my path to MS or PhD?

FLUENT is used extensively for academic purposes since they maintain a good relationship with almost all academic institutions researching in CFD.

8How is this course going to help me get a job?

This course covers in-depth explanation of the tools used in the industry. Equipping yourself with these tools will help your resume stand out from the rest.


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