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Old   August 11, 2010, 02:18
Default SpalartAllmaras
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stephane sanchi
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Hi,

I am using the SpalartAllmaras model.

I have run a case with different settings for nut.

The first one for all walls :
type fixedValue;
value uniform 0;

And the second one :
type nutSpalartAllmarasWallFunction;
value uniform 0;

Are both settings right ?
What are the differences ?
What y+ need both formulations ?

Thanks for explanations and comments !

Regards,

Stephane.
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Old   August 11, 2010, 02:54
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BastiL
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Quote:
Originally Posted by openfoam_user View Post
Are both settings right ?
What are the differences ?
No, the second one ist the wall function intended to be used with the spalart-allmaras model. So the first one is wrong.

Quote:
Originally Posted by openfoam_user View Post
What y+ need both formulations ?
This is a blended model so it works for the wholre range of y+ values.

Regards Bastian
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