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Old   September 9, 2001, 09:18
Default k-epsilon turbulence model
Abhijeet Mohan Vaidya
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Hi folks I have questions ! 1) I want to know the details of the numerical implementation of the k -epsilon model in a finite volume code based on the SIMPLE algorithm ! 2)Is it possible to create a generalised solver,which will be able to incorporate a k-epsilon as well as mixing length model ?If yes how ? Kindly suggest references for the above two questions.
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Old   September 9, 2001, 17:58
Default Re: k-epsilon turbulence model
John C.Chien(Alter Ego)
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Start with the thesis of Peric.

A finite volume method for the prediction of 3-d fluid flow in complex ducts. Imperial College. 1985.

Also see Ferziger and Peric. Computational Methods for Fluid Dynamics. They provide source code for a 2-d finite volume method with the k-e model included. I'm not too sure if its simple or not but there's a good chance it is...
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Old   September 12, 2001, 19:51
Default Re: k-epsilon turbulence model
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About (*) SIMPLE: Patankar's book (Numerical Heat Transfer) has been herein claimed to be a starting point resource. (*) futher details: search the forum archive (e.g.: for Patankar's book year). (*) the k-eps: still wondering how to do the job without those books. (*) a generalized solver: you can perhaps write what you mean as a mixing length model ?

A zero equations, a one equation, or neither models ?

Formers might merely apply to 1D, thus why SIMPLE ?

Anyway, this seems fairly straightforward, if you succeeded in solving the k-eps: compute nu_t from the mixing length, and not solve non needed properties! Whether that works, and how to implement the switch between models is up to you...

I can manage to find some few outdated matlab routines that allowed for zero equs 1D steady neutrals rough surfaces Boundary-Layers computations, though. Just drop me an e-mail in case you would be interested by latters, but note that the already available 2D public domain companion fortran code for Peric's book seems to be rather familiar to some contributors.

-any volunteers for a CAFFA forum (e.g.: for debating about pros and cons of any GPL release, and/or planning any improvement, such as pre/post-processing, boundary-conditions design, and so on ? )
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