[Paraview] Oilflow - Surface flow

[Richard GRENON]

Hi Lorenzo.

If your data are the results of a CFD computation, the surface velocity 
should be non zero when solving Euler equations with wall slip 
conditions, or zero everywhere when solving the Navier-Stokes equations 
with wall adherence conditions (non slip). But when solving 
Navier-Stokes equations, you should get a skin friction vector (local 
tangential force) that is non zero: for LIC to give an oilflow pattern, 
you should use this skin friction vector instead of the velocity vector.

And please, could you tell us what was the solution given by Koen? His 
mail was missing.

Richard.

Lorenzo a écrit :
> Thanks both of you, your help is really appreciated!
>
> @ Richard: as I'm using the non slip condition for my walls geometry, 
> the velocity on the surface is 0 everywhere… Just checked and the 
> vector I get with the calculator is made by zeroes only… so, what is 
> not clear to me, is how do I give the LIC a vector which is not zero?
>
> @ Koen: that worked. Any way to reduce the number of oilflow paths?
>
> Again, I would like to thank you two and everybody else in this 
> mailing list for your help.
>
> Lorenzo

-- 
 Richard GRENON
 ONERA
 Departement d'Aerodynamique Appliquee - DAAP/ACI
 8 rue des Vertugadins
 92190 MEUDON - FRANCE
 phone : +33 1 46 73 42 17
 fax   : +33 1 46 73 41 46
 mailto:Richard.Grenon at onera.fr
 http://www.onera.fr