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Analysis Software Interfaces
See Section 2.5 for additional information regarding use of the file Browser. These commands may also be
invoked via a button or buttons in the INPUT/OUTPUT COMMANDS menu.
The following sections describe the analysis data export in the context of specific analysis software packages.
17.8.1
generic
Gridgen’s generic ASW is not really a software package at all, but a facsimile of one that is included in Gridgen to give you the ability to create and export grids and boundary conditions in a generic format. Using the
file descriptions in Section 18, you may then write your own translator to convert from the generic format to
your own format. Gridgen’s generic solver has been patterned after a computational fluid dynamics (CFD)
code and supports hybrid grids.
The generic ASW supports both structured and unstructured grid output formats (with the exception of 2D
unstructured). The structured grid output maintains the computational coordinates of the grid, whereas, the
unstructured grid output format breaks the entire grid into a list of points and element connectivity.
The generic structured format allows you to export separate grid and boundary condition files. The format
of the generic structured BC file may be found in Section 18.8. The generic structured grid file only supports quadrilateral and hexahedral grid cells and is a structured, multi-block grid with Gridgen style, ASCII,
binary or unformatted format, and double precision as described in Section 18.10.
The generic unstructured format includes the grid and the boundary conditions as named regions exported in
FIELDVIEW Unstructured format. The unstructured generic file supports hexahedral and tetrahedral (volumetric) elements only. See Section 18.7 for more information.
If your grid contains any unstructured blocks, the unstructured format is automatically chosen as the generic
format. If all blocks contain structured grids, you are given the option to export the grid as either structured
or unstructured and choose the format, as shown below.
17.8.2
ADPAC
ADPAC supports structured, multi-block grids only. Gridgen exports two files for ADPAC; the boundary
data (.boundata) file, and the grid (.mesh) file. Any physical values, such as pressure and temperature,
required by the boundary data file are set to zero. It is up to you to edit this file and supply the correct values
prior to running ADPAC. ADPAC’s grid file is a Fortran unformatted, double precision, PLOT3D, multigrid file. Only 3D grids supported.
17.8.3
CFDSHIP-Iowa
CFDSHIP-Iowa supports 2D and 3D multi-block structured grids.
17.8.4
CFD++
CFD++ supports all cell types that can be created in Gridgen. Both 2D and 3D grids are supported. Multiple
data files are written in big-endian binary regardless of platform.
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