UG_IO SimSys 3D Node, Grid, and Function File Types
File Type Suffix and Description ________________________________________________________________________________ .snode ------ SNODE 3D source node data file. An SNODE file contains a list of node coordinates and spacing function. This file type uses a fixed file format and the [.format] File Format Suffix is not applicable. .mnode ------ MNODE 3D metric source node data file. A MNODE file contains a list of node coordinates and symmetric metric. This file type uses a fixed file format and the [.format] File Format Suffix is not applicable. .tags ----- TAGS surface tags data file. A TAGS file contains a list of surface IDs and surface BC properties. This file type uses a fixed file format and the [.format] File Format Suffix is not applicable. This file type may only be used for input files. .split ------ SPLIT split-face hex-element data file. A SPLIT file contains a list of hex-elements with 2:1 split faces. .snsdata -------- SNS specified normal spacing data file. An SNS file contains the specified normal spacing data for BL grid generation. This file type uses a fixed file format and the [.format] File Format Suffix is not applicable. This file type may only be used for input files. .psdata ------- PSDATA periodic surface definition data file. A PSDATA file contains the definitions for periodic surface pairs. This file type uses a fixed file format and the [.format] File Format Suffix is not applicable. This file type may only be used for input files. .poly ----- POLY unstructured b-surf grid file. A POLY file contains a tria/quad face boundary surface grid. This file type is used by TetGen. This file type uses a fixed file format and the [.format] File Format Suffix is not applicable. This file type may only be used for output files. .stl ---- A 3D stereo-lithography b-surf grid file. A STL file contains a tria face boundary surface grid. .surf ----- SURF 3D unstructured b-surf grid file. A SURF file contains a tria/quad face boundary surface grid. This file type uses a fixed file format and the [.format] File Format Suffix is not applicable. .tri ---- Cart3D TRI unstructured b-surf grid file. A Cart3D TRI file contains a tria face boundary surface grid. This file type is generated by the Cart3D system. .cfd++ ------ CFD++ grid file set. A CFD++ grid file set contains a tria/quad face boundary surface grid and a polyhedral element volume grid. This file type uses multiple files for coordinates (nodesin.bin), elements (cellsin.bin), and surface faces (exbcsin.bin). This file type uses a fixed file format and the [.format] File Format Suffix is not applicable. This file type may only be used for output files. .cgns ----- CGNS data file. A CGNS data file contains a tria/quad face boundary surface grid and (optionally) a polyhedral element volume grid. This file type uses a fixed file format and the [.format] File Format Suffix is not applicable. .cobalt.grd ----------- Cobalt grid file. A Cobalt grid file contains a tria/quad face boundary surface grid and a polyhedral element volume grid. This file type uses a fixed file format and the [.format] File Format Suffix is not applicable. This file type may only be used for output files. .egrid ------ Ensight Gold grid file. An Ensight Gold grid file contains a tria/quad face boundary surface grid and a polyhedral element volume grid. This file type writes an additional case file (case_name.case). This file type uses a fixed file format and the [.format] File Format Suffix is not applicable. This file type may only be used for output files. .face ----- TETGEN 3D unstructured grid file set. A TETGEN file set contains a tria face boundary surface grid and (optionally) a tetrahedral volume grid. This file type uses multiple files for coordinates (.node), elements (.ele), and faces (.face). This file type is used by TetGen. This file type uses a fixed file format and the [.format] File Format Suffix is not applicable. .fgrid ------ FGRID 3D unstructured grid file. An FGRID file contains a triangulated boundary surface grid and (optionally) a tetrahedral volume grid. The FGRID file type is derived from the FAST (PLOT3D) unstructured grid file type. FGRID and FAST files are the same except for optional FGRID boundary reconnection, boundary condition, and initial normal spacing data records. .fluent.cas ----------- Fluent grid file. A Fluent grid file contains a tria/quad face boundary surface grid and a polyhedral element volume grid. This file type uses a fixed file format and the [.format] File Format Suffix is not applicable. This file type may only be used for output files. .foam ----- OpenFOAM polyMesh grid files A cellShape file contains a volume grid that is comprised of points and polyhedral elements defined by faces. This file type may only be used for output files. .fvuns ------ Fieldview frid file. A Fieldview grid file contains boundary surface grid and (optionally) a polyhedral element volume grid. This file type may only be used for output files. .gambit ------- GAMBIT (Fluent) neutral file. A GAMBIT Neutral file contains a tria/quad face boundary surface grid and (optionally) a polyhedral element volume grid. This file type uses a fixed file format and the [.format] File Format Suffix is not applicable. This file type may only be used for output files. .mcell ------ NSU3D grid file. A NSU3D grid file contains a tria/quad boundary surface grid and (optionally) a polyhedral element volume grid. .mesh ----- MESH 3D unstructured grid file. A MESH file contains a tria/quad face boundary surface grid and (optionally) a polyhedral element volume grid. This file type is supported by the Gamma Project of INRIA. This file type uses a fixed file format and the [.format] File Format Suffix is not applicable. .meshb ------ Binary MESH 3D unstructured grid file. A MESH file contains a tria/quad face boundary surface grid and (optionally) a polyhedral element volume grid. This file type is supported by the Gamma Project of INRIA. This file type uses a fixed file format and the [.format] File Format Suffix is not applicable. .bdf ---- NASTRAN 3D unstructured grid file. A NASTRAN file contains a tria/quad face boundary surface grid and (optionally) a polyhedral element volume grid. The suffix .nas and .bdf are equivalent. This file type uses a fixed file format and the [.format] File Format Suffix is not applicable. .nas ---- NASTRAN 3D unstructured grid file. A NASTRAN file contains a tria/quad face boundary surface grid and (optionally) a polyhedral element volume grid. The suffix .nas and .bdf are equivalent. This file type uses a fixed file format and the [.format] File Format Suffix is not applicable. .ufast ------ UFAST 3D unstructured grid file. A UFAST file contains a triangulated boundary surface grid and (optionally) a tetrahedral volume grid. The UFAST file type is identical to the FAST (PLOT3D) unstructured grid file type. .ugrid ------ UGRID 3D unstructured grid file. A UGRID file contains a tria/quad face boundary surface grid and (optionally) a polyhedral element volume grid. This file type can use socket or TMP file mode if a C binary double file format is also used. .efunc ------ Ensight Gold function file. An Ensight Gold function file contains field function data (scalar and/or vector). This file type assumes that a grid data file will also be written out. It also writes to an additional case file (case_name.case). This file type uses a fixed file format and the [.format] File Format Suffix is not applicable. This file type may only be used for output files. .ufunc ------ UFUNC 3D function file. A UFUNC file contains field function data (scalar and/or vector). This file type can use socket or TMP file mode if a C binary double file format is also used. .sfunc ------ SFUNC 3D function file. An SFUNC file contains field function data (scalar, vector, matrix, and/or symmetric metric). This file type can use socket or TMP file mode if a C binary double file format is also used. .sol ---- MESH SOL 3D unstructured function file. A MESH SOL file contains field function data (scalar, vector, matrix, and/or symmetric metric). This file type is supported by the Gamma Project of INRIA. This file type uses a fixed file format and the [.format] File Format Suffix is not applicable. .solb ----- Binary MESH SOL 3D unstructured function file. A MESH SOL file contains field function data (scalar, vector, matrix, and/or symmetric metric). This file type is supported by the Gamma Project of INRIA. This file type uses a fixed file format and the [.format] File Format Suffix is not applicable.
Details on the specific file types are available in the following sections.