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-   -   what does sigma mean (http://www.cfd-online.com/Forums/openfoam-pre-processing/108070-what-does-sigma-mean.html)

T.Matrix October 14, 2012 01:41

what does sigma mean
 
I' m new in OpenFOAM 2.10. Recently I finished the case "floatingObject" with the solver interDyMFoam.

what does sigma mean in the file transportProperties? I use kEpsilon model, and the case use default paramaters.

at the same time, if i want to choose stardard kEpsilon model, how to assign related paramaters.
Thank your for help.

ethanuaa October 17, 2012 03:31

the sigma is the stefan-boltzman constant.
it is declared in /opt/openfoam211/src/OPENFOAM/global/constants/physicoChemical
you can look for it.

ethanuaa

kathrin_kissling October 18, 2012 04:35

Surface Tension
 
the bolzmann Constant has to be corrected by surfaceTension/bolztmannConstant...

Sorry I could not resist.

ethanuaa October 19, 2012 11:05

dear Kathrin Kissling,
i am very sorry for my answer.
thank you for correcting my mistake.
almost i have cause a misleading.
i need more study on OF and more cautious to reply...

Zhao Wei
2012.10.19

ethanuaa October 19, 2012 11:09

Quote:

Originally Posted by kathrin_kissling (Post 387262)
the bolzmann Constant has to be corrected by surfaceTension/bolztmannConstant...

Sorry I could not resist.

dear Kathrin Kissling,
i am very sorry for my answer.
thank you for correcting my mistake.
almost i have cause a misleading.
i need more study on OF and more cautious to reply...

Zhao Wei
2012.10.19


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