[Paraview] Velocity values at walls

[Bastil2001 at yahoo.de]

Andy Bauer schrieb:
> I'm guessing that the simulation is using no-slip boundary conditions
> (i.e. setting the velocity to be zero at walls).
Correct, yes
>   Are you sure that there should be non-zero velocity at the walls? 
> Is there non-zero velocity elsewhere in the domain?
No there should not be non-zero velocity at walls. Zero is correct.
However in certain circumstances it may be interesting to get "pseudo"
velocities at walls - eg. to calculate surface streamlines or make
contour plots of velocity magnitude "directly at" the wall. Therefore I
want to interpolate some velocity values to the wall as other
postprocessors can do.
>
> On Tue, Jul 7, 2009 at 2:50 PM, Bastil2001 at yahoo.de
> <mailto:Bastil2001 at yahoo.de> <Bastil2001 at yahoo.de
> <mailto:Bastil2001 at yahoo.de>> wrote:
>
>     Hi all,
>
>     I do an export from my CFD code using node-values. I get the value of
>     "0" for the velocity at walls in Paraview. I can not visualise contour
>     of velocity magnitude at the surface or do surfaces streamlines.
>     How can
>     I get velocities to wall boundaries? I tried calculation cell
>     values and
>     point values once again, however I still have zero velocites at walls.
>
>     Thanks BastiL
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