Hello, I am a 17-year-old student new to SimScale and don’t know how many things work. I am trying to do a wind analysis on a Nascar car in order to calculate the coefficient of friction, etc.
When I import the car and try to get an enclosure I get the error of “The geometry could not be combined. Please consider cleanup operations in your CAD tool.”
Hi there, thank you for your interest in SimScale!
I have a few recommendations for your case:
Try to export your CAD model to .step or Parasolid format. STL is not suitable for this type of analysis.
Make sure no sheet faces/shell bodies appear after the import of the model. There are two main rules which are crucial for any flow simulation: Your CAD needs to be watertight (there must not be any holes except inlets and outlets) & your CAD must only contain solid parts. Shells or Sheets must not appear.
The following picture demonstrates, what these sheet faces look like after the upload: