So, I always get this massage.
“A setup regions is being used in a single-region analyses typer. Please make sure that all regions except for one have an advanced concept assigned to them.”
Briefly about the project. I want to blow air through a closed chest using a fan.
Hi there, would it be possible that you also include the link to your project, please?
Best regards,
Fillia
Yes of course
Can you see?
I want a simple thing as a first step. The air passes from side to side. Then I make the electronic components that go into it. I don’t want to use the fan setting with only air inlet, because if it’s good then I’m looking for a fan for it.
In short, this is how I want to learn how to handle the program 
Thank you so much.
Oliver
Hi!
The issue here is simple: under normal circumstances for incompressible analyses, we need a single volume, representing the flow region, to run the simulation. If your CAD model has more than 1 volume, you will run into multi-region errors down the line.
The flow region, as I mentioned, is what we want. Solid1 is the part causing issues. The remedy here is very simple: head back to CAD mode, create a delete body operation and delete solid1.
The resulting model should be good to go.
Cheers
Thank you so much! It is work.
Hi Richard!
There was another problem. I would like a fan on both sides of the box but at 20% the simulation stops.
Sent this message:
“Velocity field started diverging. Please check the mesh quality near the reported location and try refining the mesh. If the problem occured near a boundary, please check the boundary conditions. In case of doubt, please ask for assistance via our support chat.”
I tried to move up the mesh quality, but the simulation was interrupted again. RUN4
Please help to me.
Cheers
