[Paraview] Streamlines with an octree/hierarchical grid

[Andy Bauer]

Hi Ethan,

I've been able to use streamlines with a general multiblock data set that
uses blanking. This may be slightly different than your data set but I
don't see why it shouldn't work for you.

Are the streamlines terminating near the interfaces between different
leaves of the octree grid? If you look at the ReasonForTermination cell
data output that should give you an idea. Note that values for that are:

   1. out of domain
   2. not initialized
   3. unexpected value
   4. streamline max length reached
   5. maximum number of integration time steps reached
   6. stagnation (velocity too close to zero)


There are termination criteria for the filter (e.g. the options under
Integration Parameters and Streamline Parameters in the Properties panel,
some of them are advanced options so click on the gear to get access to
those) so you may want to play with those.

If you still have problems with this, could you share your data set for us
to test with?

Cheers,
Andy

On Tue, Jul 12, 2016 at 2:14 PM, Ethan Hereth <e.a.hereth at gmail.com> wrote:

> Good afternoon,
>
> I am trying to generate streamlines on a solution generated on an octree
> style grid with hanging nodes/faces. I have cell centered data. The problem
> is that the streamlines always end too early. I assume this has to do with
> the incomplete connectivity inherent within this type of grid.
>
> My questions is, has anybody dealt with this before? And if so, what might
> I try to get this to work?
>
> I've tried creating a 3D Delaunay tessellation from the cell centers
> (obtained from the Cell Centers filter) but, at least for this case,
> Paraview crashes. Also, converting the cell data to point data does not
> take care of the problem.
>
> I've thought about attempting to interpolate my data onto a uniform
> structured mesh and use that new dataset as the source for the streamline
> filter, but I'm not sure how to go about doing that.
>
> Does anybody done this before or have any ideas about how I might solve
> this problem?
>
> Thanks for your time,
>
> Ethan Alan
>
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the ParaView Wiki at:
> http://paraview.org/Wiki/ParaView
>
> Search the list archives at: http://markmail.org/search/?q=ParaView
>
> Follow this link to subscribe/unsubscribe:
> http://public.kitware.com/mailman/listinfo/paraview
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://public.kitware.com/pipermail/paraview/attachments/20160712/3d4e8b08/attachment.html>