[Paraview] Extract Wall -- 3d geometry

[Aurélien Marsan]

Hi all,

I am working on centrifugal compressors (like turbochargers), using
unstructured mesh.

Is there a simple way to extract the wall surface ? And also the blade
surface ?
I would like to find something like "Extract Surface" -> "Pick surface to
keep".

I have read that we can do some part of the work by combining "Extract
Surface" with "Clip". But in case of very three-dimensional geometry, this
is not possible.

Thank you for any help.

Regards,

A. Marsan
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