AFLR4 UG_IO File Name Details

Note that not all of the CAD file types listed are readable by the Open CASCADE CAD system used by AFLR4.

 
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UG_IO File Names
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UG_IO file names are specified as
 
   case_name[.format].type[.compression]
 
where [ ] encloses an optional suffix and where
 
   case_name is the required file case name
   .format is the optional file format suffix
   .type is the required file type suffix
   .compression is the optional file compression suffix
 
File Format Suffix and Description
________________________________________________________________________________
 

---
Formatted ASCII file or binary format specific to file type. 
 
.b8
---
C Binary double file format with big endian ordering. 
 
.b4
---
C Binary float file format with big endian ordering. 
 
.lb8
----
C Binary double file format with little endian ordering. 
 
.lb4
----
C Binary float file format with little endian ordering. 
 
.r8
---
FORTRAN unformatted real*8 file format with big endian ordering. 
 
.r4
---
FORTRAN unformatted real*4 file format with big endian ordering. 
 
.lr8
----
FORTRAN unformatted real*8 file format with little endian ordering. 
 
.lr4
----
FORTRAN unformatted real*4 file format with little endian ordering. 
 
 
File Type Suffix and Description
________________________________________________________________________________
 
.igs
----
IGES geometry data file. 
An IGES file contains geometry definition data. 
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. 
 
.iges
-----
IGES geometry data file. 
An IGES file contains geometry definition data. 
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. 
 
.egads
------
EGADS fgeometry data file. 
An EGADS file contains geometry definition data. 
This file type uses a fixed file format and the [.format] File Format Suffix is 
not applicable. 
 
.step
-----
STEP geometry data file. 
A STEP file contains geometry definition data. 
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. 
 
.stp
----
STEP geometry data file. 
A STEP file contains geometry definition data. 
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. 
 
.brep
-----
BRep geometry data file. 
An OpenCASCADE BRep file contains geometry definition data. 
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. 
 
.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. 
 
 
File Compression Suffix and Description
________________________________________________________________________________
 

---
No file compression. 
 
.bz2
----
BZIP2 file compression. 
 
.gz
---
GZIP file compression. 
 
.Z
---
COMPRESS file compression. 
 

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File Last Updated Thu Nov 2 00:27:33 CDT 2023
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