[openfoam_user]

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.

[bastil]

Originally Posted by openfoam_user

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.

Originally Posted by openfoam_user

What y+ need both formulations ?

This is a blended model so it works for the wholre range of y+ values.

Regards Bastian