[Paraview] Velocity values at walls

[Bastil2001 at yahoo.de]

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