6.3.10 ANSYS CFX Files

You can import the meshes from 3D ANSYS CFX files, such as definition ( .def) and result ( .res) files into ANSYS FLUENT, using the File/Import/CFX menu item, as described in Section  4.12.3. The fe2ram utility is used as the import filter, which can be used as a stand-alone program to obtain an ANSYS FLUENT mesh file. See Section  6.3.11 for information about fe2ram.

Note that you only have the ability to import the mesh from a ANSYS CFX file, and not any results or data.

The 3D element set corresponding to zones/domains present in these files are imported as cell zones in ANSYS FLUENT. They may contain tetrahedral, pyramidal, wedge, and hexahedral elements. The boundary zones in these files are a group of faces with a boundary condition name/type and are imported as face zones with the boundary condition name/type retained in ANSYS FLUENT. The following boundary condition types are retained:

• inlet

• outlet

• symmetry

• interface

• wall

The boundaries of type Interface may be conformal or non-conformal. If they are non-conformal, they are retained. However, conformal interfaces contain coincident nodes which are merged and changed to type Interior. For some cases, for the merge to work correctly, the merge tolerance may need to be adjusted. Alternatively, the Fuse Face Zones dialog box in ANSYS FLUENT can be used to merge the conformal interfaces. See Section  6.8.3 for details.