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c7a7dc443c
library: * routines for managing cellTable and boundaryRegion * writing ensight files and parts * mesh reader/writer for STARCD utils: * star4ToFoam * foamToStarMesh * foamToEnsightParts
96 lines
2.2 KiB
Plaintext
96 lines
2.2 KiB
Plaintext
With pro-STAR version v4, the input formats have changed radically.
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* Easier to parse space-delimited input formats
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* No arbitrary or integral couples
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* No trimmed or degenerate cells
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* Support for polyhedral cells
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* Boundaries are directly connected to cell and faces
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Since the boundaries are now connected directly to the faces,
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we now must be concerned with cell face notation otherwise we perform the
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incorrect lookup.
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Fortunately, there are only 4 primitive shapes to be concerned with.
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Hexa:
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Foam pro-STAR
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~~~~~~~~~~~~~~ ~~~~~~~~~~~
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Face 0 (0 4 7 3) -> F5: (0 4 7 3)
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Face 1 (1 2 6 5) -> F6: (1 2 6 5)
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Face 2 (0 1 5 4) -> F3: (0 1 5 4)
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Face 3 (3 7 6 2) -> F4: (2 3 7 6)
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Face 4 (0 3 2 1) -> F1: (0 3 2 1)
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Face 5 (4 5 6 7) -> F2: (4 5 6 7)
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Prism:
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Foam pro-STAR
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~~~~~~~~~~~~~~ ~~~~~~~~~~~
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Face 0 (0 2 1) -> F1: (0 2 1)
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Face 1 (3 4 5) -> F2: (3 4 5)
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Face 2 (0 3 5 2) -> F5: (0 3 5 2)
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Face 3 (1 2 5 4) -> F6: (1 2 5 4)
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Face 4 (0 1 4 3) -> F3: (0 1 4 3)
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Tetra:
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Foam pro-STAR
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~~~~~~~~~~~~~~ ~~~~~~~~~~~
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Face 0 (1 2 3) -> F6: (1 2 3)
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Face 1 (0 3 2) -> F5: (0 3 2)
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Face 2 (0 1 3) -> F3: (0 1 3)
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Face 3 (0 2 1) -> F1: (0 2 1)
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Pyramid:
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Foam pro-STAR
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~~~~~~~~~~~~~~ ~~~~~~~~~~~
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Face 0 (0 3 2 1) -> F1: (0 3 2 1)
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Face 1 (0 4 3) -> F5: (0 4 3)
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Face 2 (3 4 2) -> F4: (2 3 4)
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Face 3 (1 2 4) -> F6: (1 2 4)
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Face 4 (0 1 4) -> F3: (0 1 4)
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Noting that several faces are skipped over in the pro-STAR definitions,
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simply introducing a new cell modeller will be a problem.
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Instead, subtract 1 from the pro-STAR faces and use lookup tables.
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Here are the pro-STAR macro snippets used for creating the primitive cells:
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! hexa
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v 10 0 0 0
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v 11 1 0 0
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v 12 1 1 0
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v 13 0 1 0
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v 14 0 0 1
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v 15 1 0 1
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v 16 1 1 1
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v 17 0 1 1
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c hexa 10 11 12 13 14 15 16 17
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! prism
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v 20 0 0 0
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v 21 1 0 0
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v 22 1 1 0
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v 23 0 0 1
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v 24 1 0 1
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v 25 1 1 1
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c prism 20 21 22 23 24 25
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! tet
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v 30 0 0 0
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v 31 1 0 0
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v 32 1 1 0
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v 33 0.75 0.75 1
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c tetra 30 31 32 33
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! pyramid
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v 40 0 0 0
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v 41 1 0 0
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v 42 1 1 0
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v 43 0 1 0
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v 44 0.5 0.5 1
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c pyra 40 41 42 43 44
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! list faces
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flist all
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