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Re: [ff3d-users] Extraction of the unit normal vector, or normal/tangent
From: |
Mykola Tasinkevych |
Subject: |
Re: [ff3d-users] Extraction of the unit normal vector, or normal/tangential derivatives. |
Date: |
Tue, 21 Oct 2008 12:08:11 +0200 |
Dear
Stéphane,
thank you for your advise!
As I understand, your penalty term is forcing the flow field "u" only to be parallel to the surface of obstacle, but
does not prescribe a specific slip, "u = slip on [ref] ", where slip is some function.
One, in principle, can also penalize the
variational formula in order to impose
u = slip
on the boundary. Is it also possible to impose this condition rigidly, as a boundary
condition?
Thank you in advance, and
the best regards,
Mykola.