[Paraview] Oilflow - Surface flow

[Richard GRENON]

Lorenzo.

There is a LIC parameter that is responsible of the "heavy" feature when 
you pan, rotate, zoom, etc..

Look at the bottom of the "Display" tab of your object that use LIC: you 
will see the option "Use LIC when using LOD". This option is checked by 
default and makes LIC to recompute the rendering while your are moving 
the object.

Uncheck this option: LIC will be deactivated while you are changing the 
view and it will render the object only when you will release the mouse 
button. It may take a while before rendering occurs after mouse button 
release depending on a parameter in the settings: menu "Edit->Settings", 
select "Render View" and look at the value of the "Lock interactive 
render" parameter: it should be 2 (seconds) by default and you may set 
it to zero.

@David:
> I think the surface vectors and surface flows filters are meant to
> address this problem.
I have tested these filters together with the "Stream tracer with Custom 
source" filter, but I never succeeded in getting full streamlines on the 
curved surface of an aircraft. I think there is really a problem of 
projection in the Stream Tracer algorithm. I wonder if this projection 
is done as it is only a second order modification of the vector 
direction and it is not needed to follow a stream line in volume.

Richard.

lovecraft22 a écrit :
> Thank you Richard.
>
> The LIC seems heavy when you pan, zoom in or zoom out your geometry, not in generating the flow paths. What you get is actually really nice.
>
> If there no way in getting good streamlines (as you pointed out I got short lines only) then the LIC is fine.
>
> Maybe there's a way of generating that directly in openfoam, as there is for free flow streamlines.
>
> Thank you again for your time.
>
> Lorenzo
>   


-- 
 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
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