This is a step in the right direction. There is one difficulty in that the sheet parts remain alongside the solid parts, which is not ideal.
I was able nonetheless to create the flow region by doing the following in our CAD Edit Mode:
- Delete all the sheet parts.
- Create an external flow region, with proper dimensions to only cover the inside of the model.
You can find my work here:
Select the ‘Flow Region’ geometry and ‘Edit in CAD Mode’ for the details on how I achieved this.
I also created a Convective Heat Transfer simulation, which seems the correct way to go for this case. Just copy the project and setup the boundary conditions.
And please, let us know how this goes!