To import a surface to ANSYS in the Design Modeler, you will first need to create just the surface using a CAD program, such as Solidworks.
In Solidworks:
- Right-click on the Features toolbar and add Surfaces if it is not already shown
- Choose the type of surface you would like to create (extruded, revolved etc.)
- Create your desired surface
- Save the surface as a .STP file
In ANSYS:
- Create your project
- Right-click Geometry
- Select Import Geometry
- Locate your file and select it
- Go into Design Modeler and Generate
Now you should be able to see your surface in Design Modeler.