View source for OpenFOAM-version-7/C2/Overiew-of-OpenFOAM-7/English

'''Title of the script''': Overview of OpenFOAM

'''Author''': Ashley Melvin

'''Keywords''': OpenFOAM version 7, ParaView, CFD, computational fluid dynamics, blockMesh, snappyHexMesh, solver, FOSSEE, spoken tutorial, video tutorial



{| border = "1"
|- 
|| '''Visual Cue'''
|| '''Narration'''
|- 
|| Slide: Opening Slide
|| Hello and welcome to this tutorial on '''Overview of OpenFOAM'''.
|- 
|| Slide: Learning Objective







|| In this tutorial, we will learn about:


* '''OpenFOAM''' and its capabilities
* Basic '''OpenFOAM''' utilities, and 
* The content available in various tutorials in this series


|- 
|| Slide: Prerequisites



|| To work with '''OpenFOAM''' you should have basic knowledge of''' computational fluid dynamics'''.
|- 
|| Slide: System Specifications













|| Throughout this series, we will be using:


* '''Ubuntu Linux''' OS version 18.04
* '''OpenFOAM''' version 7
* '''ParaView''' version 5.6.0, and
* '''gedit Text editor'''





However, you may use any other '''text editor''' of your choice.
|- 
|| Slide: About OpenFOAM®











|| '''OpenFOAM®''' stands for * '''Open source Field Operation And Manipulation'''
* It is licensed under '''GNU General Public Licence '''by '''OpenCFD Ltd'''.





Henceforth, in this series, whenever '''OpenFOAM''' is mentioned it indicates '''OpenFOAM®'''.
|- 
|| Slide: About OpenFOAM
|| 
* '''OpenFOAM''' is an '''Open source Computational Fluid Dynamics''' software.
* It is a '''CFD toolbox''' written in '''C++'''.
* It has an '''Object Oriented Programming''' interface.
* '''OpenFOAM''' is available for '''Linux''', '''Mac''' and '''Windows''' operating systems.


|- 
|| Slide: OpenFOAM Capabilities 
|| 
* '''OpenFOAM''' is a '''Finite Volume '''based''' CFD''' software.
* It uses both 
** <div style="margin-left:2.54cm;margin-right:0cm;">'''Structured''', and 
** <div style="margin-left:2.54cm;margin-right:0cm;">'''Unstructured '''grid


|- 
|| Slide: Mesh Generation
|| 
* '''OpenFOAM''' has an '''in-built mesh''' '''generation tool''' called '''blockMesh'''.
* It is used for '''structured meshing''' of simple geometries.
* '''OpenFOAM''' also has an advanced '''meshing tool''' called '''snappyHexMesh'''.


|- 
|| Slide: Mesh Conversion
|| '''OpenFOAM''' allows importing '''mesh''' from other '''packages''' like:


* '''ANSYS''',
* '''Fluent''',
* '''CFX''',
* '''Gmsh''', 
* '''STAR-CD''' etc.





Imported '''mesh''' can be converted to the format '''OpenFOAM''' uses.


For example, a '''fluent mesh''' is converted using the '''fluentMeshToFoam''' utility.
|- 
|| Slide: Solvers
|| Using '''OpenFOAM''' one can solve problems in:
* '''Incompressible flows'''
* '''Compressible flows'''
* '''Multiphase flows'''
* '''Heat transfer'''
* '''Combustion systems'''
* '''Molecular dynamics'''
* '''Magnetohydrodynamic flows'''





and many other domains.
|- 
|| Slide: ParaView
||
* Visualizing the simulated results comes under the '''post-processing''' stage.
* '''ParaView''' is the most commonly used software for '''post-processing OpenFOAM''' results.


|- 
|| Only Narration
|| Now, let’s briefly go through various tutorials available in this series.
|- 
|| Glimpse of Installing OpenFOAM in Ubuntu

(01: 50 - 01:55)
|| We first have the tutorial on installing '''OpenFOAM''' and '''ParaView''' in '''Ubuntu Linux OS'''. 
|- 
|| Glimpse of Setting-up a Test Case in OpenFOAM

(04:20 - 04:25) >> (10:06 - 10:11)
|| After this, we’ll see how to set up and view the files of an '''OpenFOAM case'''.


We’ll also see how to '''run''' the '''case''' and visualise the results in '''ParaView'''.
|- 
|| Glimpse of Creating a 2D channel geometry in OpenFOAM

(05:40 - 05:45) >> (10:25 - 10:30)
|| In the next tutorial, we’ll see how to create a geometry and '''mesh''' using the '''blockMesh''' utility.


We’ll also see how to view the '''mesh''' in '''ParaView'''.
|- 
|| Glimpse of Multi-block Meshing of 2D Geometry in OpenFOAM

(03:17 - 03:22) >> (09:31 - 09:36)
|| This is followed by the tutorial on creating a geometry with multiple '''blocks'''.


We’ll see how to '''mesh''' each '''block''' separately and '''refine cells''' locally.
|- 
|| Glimpse of Creating 3D pipe geometry and mesh in OpenFOAM

(02:05 - 02:10) >> (06:14 - 06:19)
|| Next, we’ll see how to create a '''mesh''' for a cylindrical pipe.


We’ll see how '''curved edges''' are defined using the '''blockMesh''' utility.
|- 
|| Glimpse of Simulating Hagen-Poiseuille flow through a Pipe

(07:20 - 07:25) >> (12:04 - 12:09)
|| Then, we’ll simulate the '''flow''' through a pipe.


We’ll also compare the results from '''simulation''' with the analytical solution.
|- 
|| Glimpse of Basic Post-processing using ParaView

(04:23 - 04:26) >> (07:00 - 07:05)
|| The results from the '''pipe flow simulation''' are viewed in detail in '''ParaView''' in this tutorial.


We’ll also see how to '''plot''' the results in '''ParaView'''. 
|- 
|| Glimpse of Simulation of Turbulent Flow in a 2D Channel in OpenFOAM

(07:00 - 07:05)
|| In the next tutorial, we’ll learn how to use a '''turbulence model''' in a '''simulation'''.
|- 
|| Glimpse of Turbulence Modelling in OpenFOAM

(12:00 - 12:05)
|| We will then compare the results from a '''simulation''' using three different '''turbulence models'''. 
|- 
|| Glimpse of Grid Resolution and Convergence in OpenFOAM

(07:53 - 07:58)
|| We also have a tutorial detailing the steps to establish '''grid independence'''.
|- 
|| Only Narration
|| Later on, there will be more tutorials in this series. 


Please check the '''Spoken Tutorial website''' regularly for the latest topics.
|- 
|| OpenFOAM version 7 Spoken Tutorial Page
|| With this we have come to the end of this tutorial.


Let’s summarize.
|- 
|| Slide: Summary
|| In this tutorial, we have learnt about:
* '''OpenFOAM''' and its capabilities
* Basic '''OpenFOAM''' utilities, and 
* The content available in various tutorials in this series


|-
|| Slide: About the Spoken Tutorial Project
|| The video at the following link summarises the Spoken Tutorial project.


Please download and watch it.
|-
|| Slide: Spoken Tutorial Workshops
|| We conduct workshops using Spoken Tutorials and give certificates.


Please contact us.
|-
|| Slide: Spoken Tutorial Forum













|| 
* Do you have questions in THIS Spoken Tutorial? 
* Please visit this site.
* Choose the minute and second where you have the question
* Explain your question briefly 
* Someone from our team will answer them 
* You will have to register on this website to ask questions.


|-
|| Slide: Forum to answer questions
||
* Do you have any general/technical questions?
* Please visit the forum given in this link.


|-
|| Slide: Textbook Companion
||
* The FOSSEE team coordinates solving feasible CFD problems of reasonable complexity using OpenFOAM.
* We give honorarium and certificates to those who do this.
* For more details, please visit these sites.


|- 
|| Slide: Acknowledgment
|| The Spoken Tutorial project is supported by MHRD, Govt. of India.


The script for this tutorial is contributed by Ashley Melvin.


And this is Swetha Sridhar from IIT Bombay signing off.


Thank you for joining.
|-
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