[Paraview] limiting streamlines in paraview

[Bastil2001 at yahoo.de]

Well I think of two ways:

1. export wall shear stress components from CFD-code and use these (what
we currently do), this seems quite ok.
2. Calculate wall shear stress in paraview. I currently have no filter
to do this but would be interested in one...

Luc Bordier schrieb:
> Limiting streamlines and Vortex Lines are features that are available
> in FieldView and that i would like to reproduce in Paraview.
>
> from what i understood, limiting streamlines are curves on a surface
> for which directions are thoses of the vanishing fluid velocity
>
> something like : dx/tx = dz/tz (with tx, tz : viscous shear stress)
>
> (found in
> http://books.google.fr/books?id=rfszzPiuDfAC&pg=PA368&lpg=PA368&dq=%22limiting+streamlines%22+formula&source=bl&ots=CHvs_wxF16&sig=CUlIajS0GkjKPEkodrDy-bb6nBM&hl=fr&ei=hTkmSpuGO8vGsgbKooTYBQ&sa=X&oi=book_result&ct=result&resnum=1#PPA369,M1 
> on p368-369)
>
> so i guess i need to have the viscous shear stress (something like
> du/dy, and dw/dy)
> surely i 'will have to use these as a vector for streamlines filter
> but surely there will be some projections to be made regarding to the
> surface normals...
>
> I will try to dig a little in order to have a custom filter about this
> but any comments or help are welcome.
>