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How to learn CFD on our own ?

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Old   January 9, 2018, 13:14
Default How to learn CFD on our own ?
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Hello Everyone,

I am an undegraduate student and I am interested in working on CFD. I want to pursue higher studies. I am currently going through CFD book by John Anderson, learning and trying out examples by writing code in Matlab. I want some guidance on what type of projects I can do. I have some idea in working on OpenFOAM and want to develop solvers.

I know programming in Matlab only. I do not have much experience in other programming language. But I will be interested to learn if required.

I request for some assistance in the working.

Thank You in advance
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Old   January 14, 2018, 21:11
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I would suggest that you start with existing software (OpenFoam, Ansys) and the tutorials that they offer / which you can find. First to get in touch with different cases, boundary conditions etc. When you have a good overview of the situation and how to setup a simulation, especially multiphase and turbulent cases, than start going deeper into how the solvers work.

For example. OpenFoam is nice if you want to dig deeper. But first start with - is basically OF with an interface. They have a lot of tutorials and you find already a big data base with cases. It's also on the cloud, so you can do it from any computer. When you get a hang in it, start with OF. And here you will have all the possibilities to dig deeper. But you need to learn some basic c++ programming. Noting hard. Is really easy
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Old   January 14, 2018, 21:44
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A good starting point would be this and this git repositories. They are accompanied by some videos on YouTube as well.
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Old   January 15, 2018, 00:20
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I learned a lot with OpenFoam and the examples delivered. If you need other / more / modified cases you find a lot in the net and especially in this forum.

Please keep in mind: A correct or at least useful CFD result requires two things:
1) A software which converts the continuum to a mathematical model
2) An adequate way to use this software (make a good mesh, set the b.c. correctly, be skeptical about the results.

The most important thing: Just start!
Uwe Pilz
Die der Hauptbewegung überlagerte Schwankungsbewegung ist in ihren Einzelheiten so hoffnungslos kompliziert, daß ihre theoretische Berechnung aussichtslos erscheint. (Hermann Schlichting, 1950)
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