Error running sim

I’m getting the following error.

Is it due to my model having multiple parts excluding the flow domain?

Hello @e81d0040b2c047 , thanks for using the Forum.

Yes, that’s correct. Incompressible simulation type only requires the flow domain as one part, and other solid parts should be deleted after the external flow volume extraction.

This issue is also widely discussed and explained in a few forum threads such as: this one that may be helpful.

Please let us know if you have any further issues,

Best wishes,