[Paraview] How to plot Surface StreamLines

[Marzio Sala]

Hello,

you may try to first project the velocity vector on the surface, so  
that the normal components are zero, then compute the streamlines  
using this velocity field. I did this with a velocity field which was  
defined as a cell data, and the results are good (at least in my  
case...).

Regards,
-Marzio


> From: Richard GRENON <richard.grenon at onera.fr>
> Date: April 10, 2009 11:35:46 AM GMT+02:00
> To: Jacques Papper <jacques.papper at gmail.com>
> Cc: paraview at paraview.org
> Subject: Re: [Paraview] How to plot Surface StreamLines
>
>
> Jacques Papper wrote:
>> I would try :
>>
>> - diminishing the step size (in cell length)
>> - Putting a very high number of steps
>> - Decreasing the termination speed
>>
> I tried this. The best results are obtained with a step size of 0.01  
> cell length on my data,and I get always short peaces of surface  
> streamlines.
> I discovered that the grid refinement was also an important parameter:
> - when the grid is coarse at the seed point location, the surface  
> streamline stops after crossing only one or two cells.
> - when the grid is well refined at the seed point location, the  
> surface streamline is longer and propagates over many cells, but it  
> never reaches the boundary of the surface.
>
> So I think that the best workaround is to put many seed points all  
> over the surface. If someone has a better idea...
>
> Best regards.
>
> -- 
> 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
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.paraview.org/pipermail/paraview/attachments/20090410/0f55f2c5/attachment.htm>