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-   -   Explanation for terms like RAS turbulence, kEpsilon,... (http://www.cfd-online.com/Forums/openfoam-pre-processing/86132-explanation-terms-like-ras-turbulence-kepsilon.html)

tH3f0rC3 March 15, 2011 07:36

Explanation for terms like RAS turbulence, kEpsilon,...
 
Hi there,

I want to understand the meaning of those terms used from OpenFoam like for example RAS turbulence.
The following is written in the userguide:
RASModel
uses Reynolds-averaged stress (RAS) modelling; But what does that mean? Does someone know where I can find the explanation to that?
under this link there is a list, but also no explanation of what is ment with for example: kEpsilon
Standard high-http://www.openfoam.com/docs/user/img/user334x.png http://www.openfoam.com/docs/user/img/user335x.png model

In the RASproperties there are lises many keywords like kEpsilonCoeffs. Where can I find their meaning?

Regards,
tH3f0rC3

vatavuk March 16, 2011 08:10

Hi,
You are asking basic questions about turbulence models. Look up in search sites and you will find a lot of information about this.

tH3f0rC3 March 16, 2011 11:16

Quote:

Originally Posted by vatavuk (Post 299638)
Hi,
You are asking basic questions about turbulence models. Look up in search sites and you will find a lot of information about this.


Aaaaaaah, OK.
Thank you. I thought this would be names created for turbulencemodels from the one who programmed this files.
But these files are named to their scientific background.

Thank you!

Regards,
tH3f0rC3


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