I know Solidworks has a feature called "Defeature" which allows you to strip away important detail or small parts. It does exactly what I want it to do but the only problem is the final result is one geometric volume. I still need multiple volumes because I need to export this figure to do CFD analysis. Does anyone know a way to remove small parts in Solidworks but the final result is not one solid part? Thanks!
Defeaturing is generally used by engineers performing CAE Analysis, You can see some procedure here in a CAE Software called midas NFX: