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-   -   Null Domain Pointer Error when importing CGNS mesh (http://www.cfd-online.com/Forums/fluent/38678-null-domain-pointer-error-when-importing-cgns-mesh.html)

Matt November 20, 2005 22:07

Null Domain Pointer Error when importing CGNS mesh
 
I am getting the following error when I attempt to import a CGNS mesh file into Fluent: ------------------------------------------------------
: /file/import/cgns/mesh

CGNS file name [] tomgrid_3.cgns

Reading "| utility fe2ram -tCGNS -d3 tomgrid_3.cgns"...

Starting exec /usr/local/Fluent.Inc/utility/fe2ram4.3/lnx86/fe2ram.4.3.11 -tCGNS -d3 tomgrid_3.cgns

CGNS file to RAMPANT file

Read 712937 nodes, 781813 elements, 1 groups.

8416 tet elements

10994 pyramid elements

189839 wedge elements

572564 hex elements

Building...

grid,

Error: Null Domain Pointer

Error Object: #f

----------------------------------------------------------- Fluent obviously isn't happy with the mesh. I am trying to diagnose the problem with the CGNS file. It would be a great help if I could figure out what the above error message means.

Thanks, Matt

Noelle November 23, 2005 18:37

Re: Null Domain Pointer Error when importing CGNS
 
negative cells or skewness levels so high the solver is interpreting these cells as completely flat with neg. volumes. go back to your grid and check for skewness.

Matt November 26, 2005 02:01

Re: Null Domain Pointer Error when importing CGNS
 
Well, why didn't they just say so! I have discovered the negative volumes. Thanks for the translation.

Matt


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