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How about temperature wall function ?

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Old   October 2, 2010, 23:29
Default How about temperature wall function ?
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Dear all,
I am confused about kqRWallFunction.
I know k is turbulent kinetic energy, and R is Renolds stress. what's the meaning of q ?

Because in buoyant flow, temperature also need a wallfunction like velocity. But I don't know how to use this in OpenFOAM.

Thanks.
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Old   August 15, 2013, 04:55
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Quote:
Originally Posted by panda60 View Post
Dear all,
I am confused about kqRWallFunction.
I know k is turbulent kinetic energy, and R is Renolds stress. what's the meaning of q ?

Because in buoyant flow, temperature also need a wallfunction like velocity. But I don't know how to use this in OpenFOAM.

Thanks.
OpenFOAM has a turbulence model called qZeta, in which q = k^(1/2), which is set with the same wall function. The wall function just sets k, q and R to 0 at the wall.
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