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GridTool: A Tool for Structured and Unstructured Grid Generation
I/O
GridTool is capable of reading geometry/grid definitions in ASCII or
C-Binary formats.
File input/output formats
File Type Options
IGES [12] read
RESTART read/write
GRIDGEN [13] read/write (Binary as well)
PLOT3D [14] read/write (Binary as well)
CURVES read/write
LaWGS [15] read/write
VGRID-NET [1] read/write
VGRID-FRONT [1] read/write
VGRID-FRONT (Update)[1] read/write
VGRID-d3m [1] read/write
VGRID-d3m (Update)[1] read/write
FELISA system [2] read/write
The IGES (Initial Graphics Exchange Standard) files are based on the
industry standard as described in IGES manual [12].
GridTool is only capable of accepting the following entities: copious
data (entity 106), lines (entity 110), parametric splines (entity 112),
parametric surface spline (entity 114), NURBS curves (entity 126) and
NURBS surfaces (entity 128). Surfaces defined by points can be
read/written in GRIDGEN [13],
PLOT3D [14], LaWGS [15] or
VGRID-NET [1] formats.
The surface triangulation, "the initial front", can be read/written in
a front format defined by the VGRID system [1] or
FELISA system [2]. The necessary information for
advancing front methods can be read/written either in a "d3m"
input-file format for VGRID system [1] or in a
"dat" input-file format FELISA system [2].
An ASCII
"restart" file can be read/written at any time, which contains all
created/modified/read objects. It is possible to combine several
restart files to form one. This allows several people to work on the
same configuration and combine all pieces at a later time. Before
reading/writing a "d3m", "front" or a "dat" file, a "project name"
must be selected. This name is used as the file name suffix for all
necessary files (e.g. project.front). Once the file is read/written,
the "Files" browser will be updated. To update the list
displayed in "Files" browser, press the "Update" button.
FAQ
- How can I read/write a file into/from GridTool?
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- Open the I/O panel,
- Either type the file name in the File Name input field
or select it from the File browser;
- Select the file type;
- Push read/write button.
- How can I read/write a d3m file for VGRID system?
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- Type in the project name in the Project input field;
- push read/write button.
- How can I write the NURBS surfaces as GRIDGEN surfaces?
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- Turn the desired surfaces on;
- Write a GRIDGEN file from IO panel
- What IGES entities can GridTool read?
- GridTool is only capable of accepting the following
entities:
- Copious data (entity 106),
- Lines (entity 110),
- Parametric splines (entity 112),
- Parametric surface spline (entity 114),
- Matrix (entity 124),
- NURBS curves (entity 126),
- NURBS surfaces (entity 128).
- Is there any approximation involved in bringing IGES entities into
GridTool?
- There is no approximation involved in bringing IGES entities into GridTool.
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