[Paraview] Vorticity is calculated as zero

[Andy Bauer]

Can you share your data set? It will be difficult to diagnose without that.


On Wed, May 21, 2014 at 9:06 AM, Andreas Hessenthaler
<hessenthaler at mail.de>wrote:

> Hi there,
>
> I have the following problem:
>
> When I calculate the vorticity through Filters > Compute Derivatives >
> Vorticity for a simple example (driven cavity in 2D) with only few elements
> on an unstructured grid I get the correct values.
>
> Though, when I do the same for a bigger domain, i.e. more elements (~80
> 000 nodes), I only get zero vorticity values.
>
> The grids and values are all read in from *.vtu files, with the exact same
> format, meshes are triangluar 2D (z-components set to 0.0).
>
> I can reproduce the behavior on different versions of ParaView: 3.14.1 &
> 4.1.0 as well as different operating systems: Windows 7 & Ubuntu 14.04.
>
> If I calculate the gradient of the velocity field, all values are
> calculated as zero as well.
>
> Thanks in advance!
>
> Cheers
> Andreas
>
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