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-   OpenFOAM Running, Solving & CFD (http://www.cfd-online.com/Forums/openfoam-solving/)
-   -   kqRWallFunction (http://www.cfd-online.com/Forums/openfoam-solving/111131-kqrwallfunction.html)

immortality December 28, 2012 06:14

kqRWallFunction
 
hi
I want to write kqRWallFunction manually in openfoam.does anybody know a good paper about the formula of it?

Lieven December 28, 2012 07:36

Hi Ehsan,

kqRWallFunction is basically equal to zeroGradient, at least that's how it is implemented in OF. Why would you want to implement the function yourself if it is already available?

Kind regards,

L

immortality December 28, 2012 09:24

hi dear lieven
I want to model a square tube with a small inlet that is 3mm.i calculated k and omega from the formula in this site.but they seems very high due to highvelocity and small length scale.for instance omega is about 50000.is it correct?
I thought may be i can calculate and obtain better values.
Another doubt is that i dont know what folders need for kOmegaSST in 0-folder?there are very folders like epsilon,R,nutilda,... What folders should be there?
Thank you very much.

danvica December 28, 2012 10:04

Hi,
Maybe this can be usefull: http://www.box.com/s/5f45b9c6a8cda47a9d62

It's far from complete but can be a starting point.

Spidermohaa June 5, 2013 09:41

omega equation?
 
Hi,
nice document by the way! May i ask you, why do you use the omega equation for fluent? Thought you calculate in OpenFOAM?

immortality June 6, 2013 01:16

what do you mean by omega equation in fluent and openfoam?

immortality June 6, 2013 01:24

hi Daniele
Maybe too late but the link doesn't work for me in here.
Please send another one if possible.

wyldckat June 9, 2013 07:33

FYI: I've emailed just now the document to Ehsan.


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