Stl for Simulia

Hey Simulia Community,

Is there a way to create a CFD without having the digitized shape preapration app. I tired to import the file by using the 3d printing app and I successfully created the finite model. However, once I tried to mesh, it didn't work. The app didn't let me to select the imported stl as a support? I am pretty new to simulia.

Kind regards,

Ted