Open inner region failed

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1

hello, I want to model the CHT analysis, I have studied how to create an open inner region and it always fails, I have difficulty in the Open inner region for the 3-D geometry of rotorcraft gears that I want to simulate. can you help me with this problem?
thank you

Untitled rotor
Untitled rotor1840×1464 217 KB

this link : https://www.simscale.com/workbench/?pid=6731116844443574309&mi=operation%3A58%2Cgeometry%3A41&mt=GEOMETRY_OPERATION

2

Hey there!

I can see that your model does not have an open inner region, but the box is fully solid and even intersects the gears, am I right?

The open inner region operation expects a void in the model, whit open faces at the inlet/outlets. Please refer to this page for details:

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