[sieginc.]

I get this error after I assign parts to regions and I try to create a volume mesh. I have a solid object in a duct that is an assembly, and then the duct itself. I fill holes at the ends, and then extract the volume to get the air region. Then I send everything to regions. The interfaces are created as you would expect, but then when I mesh STAR says that the solid object is a self-intersecting geometry. I double checked the actual solid model and it does not have intersecting faces, so how could this be? I thought it was because I'm sending duplicate parts to regions but all I'm doing is extracting the volume, nothing more.

Here is a link to the sim file if anyone has the courage and patience to play around with it and tell me what I'm doing wrong:

http://www.sendspace.com/file/wr00au