From STL

The From STL option allows you to import an STL mesh file into Ansys ICEM CFD. Note that the parts defined in the STL file will also be imported. Select the format for the part names and click Done to finish the operation.

Part names

Generate: generates part names of the format Filename.PartName, where PartName is the part name defined in the STL file.
From file: retains the part names as defined in the STL file.
Note: This option is valid only for STL files in ASCII format. For STL files in binary format, the part names of the format Filename.PartName will be generated as described.