[Paraview] limiting streamlines in paraview

[Luc Bordier]

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.

-- 
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Luc Bordier
R&D Engineer
luc.bordier at sirehna.com
http://www.sirehna.com
SIREHNA
1, rue de la Noe
BP 42105
44321 NANTES CEDEX 3
FRANCE
Tel: +33 2 51 86 02 80
Fax: +33 2 40 74 17 36
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