[Paraview] PV 3.10.1 integration over a surface

[Stephen Wornom]

Andy Bauer wrote:
> I think the cell normals that you have are generated for visualization 
> and not really part of your data set that's directly outputted from 
> your filter.  So when you do cell data to point data you still don't 
> have the normals in there.
>
> Did you try using the extract surface and generate surface normals 
> filters?
It works now (when I click extract surface, the generate surface normals 
filter becomes active).
Thanks,
Stephen
>
> On Sun, Jun 19, 2011 at 12:52 PM, Stephen Wornom 
> <stephen.wornom at inria.fr <mailto:stephen.wornom at inria.fr>> wrote:
>
>     Andy Bauer wrote:
>
>         One way is to use the calculator filter to multiply the
>         pressure by the normal to get force per unit area on the
>         cylinder.  Then you can use the integrate variables filter to
>         get the total force on it.
>         If you don't have normals on your cylinder, you can use the
>         generate surface normals filter but that only works for
>         polydata.  The extract surface should get you from any other
>         data set to the polydata you want.
>
>     I have cell normals (vector) next I do
>     cell data to point data
>     extract surface
>     when I do calculator, the cell normal vector is not in the list.
>     How do I get the cell normal vector in the calculator list?
>     Thanks for your help,
>     Stephen
>
>
>         Andy
>
>         On Sun, Jun 19, 2011 at 4:01 AM, Stephen Wornom
>         <stephen.wornom at inria.fr <mailto:stephen.wornom at inria.fr>
>         <mailto:stephen.wornom at inria.fr
>         <mailto:stephen.wornom at inria.fr>>> wrote:
>
>            How does one compute the integral of P Normal ds ?
>            where Normal is the surface normal vector
>
>            click on integrate variables computes the integral of P ds
>            I would like
>            Fx = integral of P nx ds
>            where nx ds is the surface area normal to the x-direction.
>            Hope my question is clear.
>            Stephen
>            p.s.
>            The surface in question is a cylinder
>
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>
>     -- 
>     stephen.wornom at inria.fr <mailto:stephen.wornom at inria.fr>
>     2004 route des lucioles - BP93
>     Sophia Antipolis
>     06902 CEDEX
>                    
>     Tel: 04 92 38 50 54
>     Fax: 04 97 15 53 51
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>


-- 
stephen.wornom at inria.fr
2004 route des lucioles - BP93
Sophia Antipolis
06902 CEDEX
		
Tel: 04 92 38 50 54
Fax: 04 97 15 53 51

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