CGNS domain file: split domain surfaces

ParaView Support
1

Dear all,

I imported my CGNS domain file. When I load the domain everything is defined as “one-block” (please refer to the attached Figure).

I would like to split my domain patches, like the domain boundaries and my geometry boundaries.

Do you know how can I achieve that?

Many thanks in advance.

Regards,

Gabriele

CGNS_domain
CGNS_domain1437×803 48.5 KB

2

please share your data

3

Dear Mathieu,

Many thanks in advance for your support.

Please find below the link of the CGNS file:

FYI: I am using Paraview 5.12.0-RC2

Regards,

Gabriele

4

So looking at your file, it indeed does not contain the boundaries.

I can see these warnings though:

(  27.668s) [paraview        ]      vtkCGNSReader.cxx:4268  WARN| vtkCGNSReader (0x76e684006a20): Skipping BC_t node: BC_t type 'BCFarfield' not supported yet.
(  27.670s) [paraview        ]      vtkCGNSReader.cxx:4268  WARN| vtkCGNSReader (0x76e684006a20): Skipping BC_t node: BC_t type 'BCFarfield' not supported yet.
(  27.671s) [paraview        ]      vtkCGNSReader.cxx:4268  WARN| vtkCGNSReader (0x76e684006a20): Skipping BC_t node: BC_t type 'BCFarfield' not supported yet.
(  27.671s) [paraview        ]      vtkCGNSReader.cxx:4268  WARN| vtkCGNSReader (0x76e684006a20): Skipping BC_t node: BC_t type 'BCSymmetryPlane' not supported yet.
(  27.671s) [paraview        ]      vtkCGNSReader.cxx:4268  WARN| vtkCGNSReader (0x76e684006a20): Skipping BC_t node: BC_t type 'UserDefined' not supported yet.
(  27.671s) [paraview        ]      vtkCGNSReader.cxx:4268  WARN| vtkCGNSReader (0x76e684006a20): Skipping BC_t node: BC_t type 'UserDefined' not supported yet.

So maybe it does contain some information that ParaView is unable to use yet.

In any case, you want to check how you generated that data.

5

To be available in Paraview, the CGNS BCNode_t need to be defined through “FamilySpecified” and the Family associated will also contains the type of boundary. This is something all good meshers do (Cadence Pointwise, Ansa from Beta CAE, Cadence Automesh, …).
As suggested by Matthieu, you want to check how the data was generated.

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