UG_IO SimSys CFD++ 3D Grid File Type

A CFD++ file contains a tria/quad face boundary surface grid and a polyhedral element volume grid. The output file is always empty and the grid data is actually written to the files cellsin.bin, exbcsin.bin, and nodesin.bin. BC related data is written to a file named mcfd.bc. See CFD++ related documentation for more information. CFD++ type grid files are only supported for output files. The internal format of CFD++ type grid files is always binary with big endian ordering and the UG_IO file format suffix will have no effect.

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