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Old   April 18, 2005, 02:25
Default roughness
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azmir
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I saw an old thread saying it was not possible to use roughness model for kw-sst. Is this status the same now?
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Old   April 18, 2005, 04:42
Default Re: roughness
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Bart Prast
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You can use it but but only by editing the ccl yourself (latest I saw).
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Old   April 18, 2005, 21:37
Default Re: roughness
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azmir
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Is there a sample on this editing?
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Old   April 20, 2005, 07:09
Default Re: roughness
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Bart Prast
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To use wall roughness in combination with omega based turbulence models; Use either (in the wall boundary conditions section of the ccl) :

WALL ROUGHNESS:

Option = Rough Wall

Roughness Height = x [m]

END # WALL ROUGHNESS

TURBULENT WALL FUNCTIONS :

Option = Automatic

END

or:

WALL ROUGHNESS:

Option = Rough Wall

Roughness Height = x [m]

END # WALL ROUGHNESS

TURBULENT WALL FUNCTIONS :

Option = Scalable

Minimum Yplus = y

END

You have to fill in x and y of course.
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Old   April 21, 2005, 00:16
Default Re: roughness
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azmir
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Thanks! I was earlier worried that this might work only for k-w or k-w BSL only but not kw-SST. Glad to presume it works for kw-SST as well! Bye.
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