[Paraview] Velocity field analysis - lambda2

[David E DeMarle]

Have you tried numpy expressions in the python calculator?
http://www.vtk.org/Wiki/Python_Calculator
hth


David E DeMarle
Kitware, Inc.
R&D Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4909

On Mon, Dec 7, 2015 at 4:11 PM, David Larsson <david.larsson at sth.kth.se>
wrote:

> Dear all,
>
>
> I'm working with velocity vector fields over multiple time steps. I would
> like to compute a number of entities for the velocity field - most
> importantly the lambda2-scalar, but being relatively new to paraview I'm
> not really sure how to do that.
>
>
> I can do some simple modifications using the calculator but can't really
> find my way to grad() or curl() etc. I guess the solution is going over to
> pvpython (which would also be preferred with regards to doing automated
> analysis).
>
>
> Does anyone have any experience with performing numerical analysis of
> vector velocity fields in pvpython that could give some hints on how to get
> started? Or does anyone even have performed lambda2-analysis on such?
>
>
> I've seen some similar questions in the mail-list from before but can't
> seem to find a conclusive answer, so I thought I'd give it a try myself.
>
>
> Thanks for the help.
>
>
> /David
>
>
>
>
> <https://webmail.kth.se/owa/redir.aspx?C=IxWYxXymHES_fQvc4qU3B9BOtBARstEIlfcjHJ6nx0MeBY57EwkoSX2SdYQPib-GqeXHouLYnDA.&URL=mailto%3adavid.larsson%40sth.kth.se>
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