CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   OpenFOAM Pre-Processing (http://www.cfd-online.com/Forums/openfoam-pre-processing/)
-   -   Parameters rhoSimpleFoam (http://www.cfd-online.com/Forums/openfoam-pre-processing/117802-parameters-rhosimplefoam.html)

marcus85 May 15, 2013 09:36

Parameters rhoSimpleFoam
 
Hello Foamers,

at first i will say that i want to write my Master-Thesis in OpenFOAM with the rhoSimpleFoam solver...Thats why I really want help, because in the company where i work isn't somebody, who can help me a lot...I hope here I find some answers.

The Problem that i want to solve are the Choose of the Parameters, which are used in the Constant directory of the Case.

For Example the file for the RASProperties:

/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 1.5 |
| \\ / A nd | Web: http://www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object RASProperties;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

RASModel kOmegaSST;

turbulence on;

printCoeffs on;

laminarCoeffs
{
}

kEpsilonCoeffs
{
Cmu 0.09;
C1 1.44;
C2 1.92;
C3 -0.33;
alphah 1;
alphak 1;
alphaEps 0.76923;
}

RNGkEpsilonCoeffs
{
Cmu 0.0845;
C1 1.42;
C2 1.68;
C3 -0.33;
alphah 1;
alphak 1.39;
alphaEps 1.39;
eta0 4.38;
beta 0.012;
}

LaunderSharmaKECoeffs
{
Cmu 0.09;
C1 1.44;
C2 1.92;
C3 -0.33;
alphah 1;
alphak 1;
alphaEps 0.76923;
}

LRRCoeffs
{
Cmu 0.09;
Clrr1 1.8;
Clrr2 0.6;
C1 1.44;
C2 1.92;
Cs 0.25;
Ceps 0.15;
alphah 1;
alphaEps 0.76923;
alphaR 1.22;
}

LaunderGibsonRSTMCoeffs
{
Cmu 0.09;
Clg1 1.8;
Clg2 0.6;
C1 1.44;
C2 1.92;
C1Ref 0.5;
C2Ref 0.3;
Cs 0.25;
Ceps 0.15;
alphah 1;
alphaEps 0.76923;
alphaR 1.22;
}

wallFunctionCoeffs
{
kappa 0.4187;
E 9;
}

There are so many Parameters which are certain already tested, but where originates these Parameters for the soving Code from?
Have somebody a literature advice for me, where i can find these Parameters?

Hopefully some Parameters might be unused in solving rhoSimpleFoam Cases with the kQrWallfunction, but which one are these?

Can somebody say me sth. about the Influence of some Parameters or similar else?

Can somebody say me, for what Parameter the Hf stands in the thermophysicalProperties?

Maybe somebody have an Advice for me based on the transportProperties, which i want to post here:

FoamFile
{
version 2.0;
format ascii;
class dictionary;
location "constant";
object transportProperties;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

transportModel Newtonian;

nu nu [ 0 2 -1 0 0 0 0 ] 1.45e-05;

Prt Prt [ 0 0 0 0 0 0 0 ] 0.9;

Pr Prt [ 0 0 0 0 0 0 0 ] 0.7;

rho rho [ 1 -3 0 0 0 0 0 ] 1.204;

k k [ 1 1 -3 -1 0 0 0 ] 0.026;

Cp Cp [ 0 2 -2 -1 0 0 0 ] 1005;


// ************************************************** *********************** //
Why there are Parameters for Prt twice? These Files are assembled from my forerunner in the company, who is unfortunately not more in our department=(

At last many Thx for your supplies and hope that somebody could help me...

MfG

Marcus


All times are GMT -4. The time now is 03:44.