Mesh importation: NASTRAN, PATRAN, UNV (IDEAS) standard formats
PATRAN, NASTRAN UNV and MED formats
The principle of operation of the importation is as follows: all the vertexes, edges and facets of volume elements and/or surface elements of initial file of NASTRAN, PATRAN, UNV or MED format are converted into points, lines and faces of the final file in the Flux project.
Conversion
The entities of initial file in NASTRAN, PATRAN, UNV or MED format are read and converted into Flux entities as in table below.
| Entities of initial file | are converted into … |
|---|---|
| nodes | points defined by parameterized coordinates |
| line elements | lines of edge type |
| surface elements | faces of list facet type |
|
groups * : component or material |
volumes |
Options for conversion
The options for conversion proposed to the user are of two types: general options for conversion available for all formats
- particular options, specific to the format NASTRAN, PATRAN, UNV or MED
Specific options
The options for conversion specific to the NASTRAN, PATRAN, UNV or MED formats are presented in the table below.
| Option | Choice | Description |
|---|---|---|
| Import mesh |
import mesh (by default) |
the following elements are imported:
|
| do not import mesh | the mesh is not imported |
Interest of mesh importation
The interest of choices suggested for the option of mesh data importation is presented in the table below.
| Option | Interest | Utilization |
|---|---|---|
| with mesh | allows to have a complete file ready for the physics (the complete geometry is meshed) |
strategy 1*: importation of the complete computation domain (with IB) |
| without mesh | avoid the command delete mesh to finish the geometry building |
strategy 2*: importation of a specific part of the device |