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Table of Contents
Introduction
Software Execution
GUI Design & Operation
CAD & Geometry
Element Sizing
VGRID Sources
FELISA Sources
Visualization
Quick-Link Reference
FAQs

GridEx Tutorials
Geometric Primitives & Solid Operations
Generic Wing/Body - FELISA Sourcing
Generic Wing/Body - VGRID Sourcing
Feature Suppression & Regeneration
Parameter Modification & Regeneration
Transformations & Displacement

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Geometry Preparation with GridTool

GridTool can be used to prepare non-manifold geometry representations for use in GridEx. Examples of non-maifold geometry representations include IGES and PLOT3D.
 
A native geometry file can be generated using GridTool with the -felisa command line option. This option slightly changes the layout of the GridTool GUI and adds options for saving the geometry model as a FELISA dat file. There are two versions of the FELISA dat files supported by GridTool. GridEx only supports the new version.
To create a FELISA dat file, define patches for the model in GridTool as usual and associate each non-planar patch with exactly one surface. Patches can be n-sided and have multiple loops. Save the FELISA dat (new version) file. Load the FELISA dat file into "GridEx native" as a part file and proceed as normal.
NOTE: FELISA native geometry models cannot be combined with solid primitives in GridEx. Therefore, the entire final domain must be constructed in GridTool and saved to the FELISA dat file.

Responsible NASA Official: William T. Jones
Site Curator: William T. Jones
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Last Updated: Feb 13, 2006