View source for OpenFOAM/C2/Introduction-to-OpenFOAM/English



Tutorial: Introduction to OpenFOAM.

Script : Rahul Joshi and Saurabh S. Sawant

Narration : Rahul Joshi

<div style="margin-left:0cm;margin-right:0cm;">Keywords: Video tutorial, CFD, About OpenFOAM, Solvers , Parallel Processing</div>







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| align=center style="background-color:#ffffff;border-top:1pt solid #000000;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.18cm;" | '''Visual Cue'''
| align=center style="background-color:#ffffff;border:1pt solid #000000;padding:0.18cm;" | '''Narration'''
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| style="background-color:#ffffff;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.18cm;" | Slide 1
| style="background-color:#ffffff;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.18cm;" | Hello and welcome to the spoken tutorial on Introduction to OpenFOAM.
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| style="background-color:#eeeeee;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.18cm;" | Slide 2: About OpenFOAM
| style="background-color:#eeeeee;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.18cm;" | * OpenFOAM stands for Open source Field Operation And Manipulation. 
* It is an Open Source Computational Fluid Dynamics Software.


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| style="background-color:#ffffff;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.18cm;" | Slide 3: About OpenFOAM
| style="background-color:#ffffff;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.18cm;" | A CFD tool box written in C++ and working on Linux operating systems.
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| style="background-color:#eeeeee;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.18cm;" | Slide 4: About OpenFOAM
| style="background-color:#eeeeee;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.18cm;" | * OpenFOAM has an Object Oriented Programming Interface. 
* It is licensed under GNU General Public Licence.


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| style="background-color:#ffffff;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.18cm;" | Slide 5: OpenFOAM capability
| style="background-color:#ffffff;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.18cm;" | OpenFOAM is a Finite Volume based CFD software using both structured and unstructured grid.
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| style="background-color:#eeeeee;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.18cm;" | Slide 6: Mesh Generation
| style="background-color:#eeeeee;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.18cm;" | * OpenFOAM has a mesh generation tool called as blockMesh. 
* It is used for structured meshing, small and easy grids. 
* Mesh input is in form of a script and no GUI. 
* It also has an Advanced Meshing tool called as snappyHexMesh. 


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| style="background-color:#ffffff;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.18cm;" | Slide 7:Importing Mesh Files
| style="background-color:#ffffff;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.18cm;" | * We can import mesh files from third party softwares like fluent, cfx by using these commands. 
* This is useful for large and complex grids. 
* We can also use arbitrary polyhedral mesh.


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| style="background-color:#eeeeee;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.18cm;" | Slide 8: Boundary Conditions
| style="background-color:#eeeeee;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.18cm;" | * There are various default boundary conditions which are available. 
* Users can modify the existing boundary conditions according to their case. 


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| style="background-color:#ffffff;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.18cm;" | Slide 9: Solvers
| style="background-color:#ffffff;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.18cm;" | There are wide range of solvers available for: * Incompressible flows such as icoFoam
* Compressible flows such as sonicFoam 
* Multiphase flows such as interFoam, 
* Combustion - chemFoam, 
* Particle-tracking flows - coalChemistryFoam, Molecular Dynamics - mdFoam and MHD flows and many more.


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| style="background-color:#eeeeee;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.18cm;" | Slide 10: Solvers
| style="background-color:#eeeeee;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.18cm;" | Users can create their own solvers or they can modify the existing solvers
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| style="background-color:#ffffff;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.18cm;" | Slide 11: Parallel Processing
| style="background-color:#ffffff;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.18cm;" | * Parallel processing is easy in OpenFOAM and supports OpenMPI.
* We can use 'n' number of processors.


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| style="background-color:#eeeeee;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.18cm;" | Slide 12: Post-Processing
| style="background-color:#eeeeee;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.18cm;" | * OpenFOAM results can be visualized using Paraview. 
* OpenFOAM data can also be visulalised in softwares such as Tecplot, Ensight , and etc. 


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| style="background-color:#ffffff;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.18cm;" | Slide 13: Equivalent to Commercial softwares
| style="background-color:#ffffff;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.18cm;" | * Commercial softwares are costly. 
* Source code is not available. 
* Solver capabilities of OpenFOAM are as good as Fluent, CFX, Star CCM +, etc.


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| style="background-color:#eeeeee;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.18cm;" | Slide 14: Modelling in OpenFOAM
| style="background-color:#eeeeee;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.18cm;" | Solver syntax in OpenFOAM is similar to that used in writing a Partial Differential Equation.
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| style="background-color:#ffffff;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.18cm;" | Slide 15: OpenFOAM code
| style="background-color:#ffffff;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.18cm;" | For example, Analytically Momentum Equation is written as shown. 

Shown below is the OpenFOAM code equivalent for this equation
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| style="background-color:#eeeeee;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.18cm;" | Slide 16-22: OpenFOAM Results
| style="background-color:#eeeeee;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.18cm;" | We will now see some OpenFOAM applications-* Dam break simulation
* Moving Reference Frame simulation
* Arbitrary Mesh Interface
* Ship Propeller Simulation
* 3D Bluff body simulation
* Particle-tracking simulation



OpenFOAM spoken tutorial are available on the spoken tutorial website.
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| style="background-color:#ffffff;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.18cm;" | Slide 23: About the Spoken Tutorial Project
| style="background-color:#ffffff;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.18cm;" | * Watch the video available at this URL. 
* It summarizes the Spoken Tutorial Project.
* If you do not have a good bandwidth you can download and watch it.


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| style="background-color:#ffffff;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.18cm;" | Slide 24: About the Spoken Tutorial Project
| style="background-color:#ffffff;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.18cm;" | The Spoken Tutorial Project Team

-Conducts workshops using spoken tutorials

-Gives certificates to those who pass an online test

-For more details, please write to [mailto:contact@spoken-tutorial.org contact@spoken-tutorial.org]
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| style="background-color:#eeeeee;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.18cm;" | Slide 25: Spoken tutorial Workshops
| style="background-color:#eeeeee;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.18cm;" | * Spoken Tutorials project is a part of Talk to a Teacher project. 
* It is supported by the National Mission on Education through ICT, MHRD, Government of India. 
* This project is coordinated by [http://spoken-tutorial/ http://spoken-tutorial]
* More information on this mission is available at the following URL link [http://spoken-tutorial.org/NMEICT-Intro http://spoken-tutori][http://spoken-tutorial.org/NMEICT-Intro al.org/NMEICT-Intro]


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| style="background-color:#ffffff;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.18cm;" | Slide 26: Acknowledgement
| style="background-color:#ffffff;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.18cm;" | References for the Video and images have been taken from these website.
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| style="background-color:#eeeeee;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.18cm;" | Slide 27: Disclaimer


About the Author and Speaker
| style="background-color:#eeeeee;border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.18cm;" | * Please make a note that this effort is not approved or endorsed by ESI Group, the producer of OpenFOAM software and the owner of the OpenFOAM trademark. 
* The script is written by Rahul Joshi and Saurabh Sawant and This is Rahul Joshi from IIT Bombay signing off.




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