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6.3.7 NASTRAN Files

There are three different ways in which you can import a NASTRAN file into FLUENT:

After reading a triangular or tetrahedral NASTRAN volume mesh using the latter methods perform smoothing and swapping (as described in Section  26.13) to improve its quality.



Recognized NASTRAN Bulk Data Entries


The following NASTRAN file datasets are recognized by the FLUENT grid import utility:

For 2D volume grids, the elements must exist in a constant $z$ plane.



Deleting Duplicate Nodes


NASTRAN may generate duplicate or coincident nodes in the process of creating elements. These nodes must be removed in NASTRAN before writing the file for import into FLUENT.


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