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[General] vorticity bug?

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Old   January 20, 2017, 10:03
Default vorticity bug?
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Marco Müller
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Hi,

I have a point data set (csv) and want to calculate the vorticity out of it. My steps are:
  • import csv
  • table to points filter: assign X,Y,Z
  • calculator: create velocity vector
  • vorticity: either compute derivatives or python calculator (curl function)
Neither of these 2 filters work, both make ParaView crash. I'm using Windows 64bit and tried several ParaView versions (3.14, 4.4, 5.2)


csv- and state-file can be found here:
https://dl.dropboxusercontent.com/u/...2/ParaView.zip



Any ideas?


Thanks
Marco
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Old   January 20, 2017, 12:24
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Mikko
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Hi Marco,

I think that you have to have a mesh to calculate gradients in ParaView. You can try to use Delaunay filter to create tetrahedral mesh.

Best,
Mikko
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Old   January 20, 2017, 12:42
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Marco Müller
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Hi Mikko,

thanks for your answer. It seems to work more or less and leads me to a question about the Delaunay filter: How can I avoid that "outer angles < 180 degree" get merged. (see pictures)

Marco
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File Type: png points.png (170.8 KB, 16 views)
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