CFD ERRO A multi-region mesh was assigned - this analysis-type requires a single-region

Hey there, 'im trying to run a wing cfd simulation but on the simulation run I recive this messege:
A multi-region mesh was assigned - this analysis-type requires a single-region mesh. Learn more.

the link of the simulation is this:
https://www.simscale.com/workbench/?pid=1769291962015744163&mi=spec%3A5a2af4ab-0bba-4995-a8bb-91fe8bffaf99%2Cservice%3ASIMULATION%2Cstrategy%3A16

Can any ne he me sve this issue?

descovered the problem I cant design the box of wind tunnel on cad, bu as enclosure on he gometry data

Hello leosachetto,

please have a look at this article on your error message and your issue.

I also recognized that the dimensions of the wind tunnel seem a bit off. You may have a look at this tutorial on the scaling of your wind tunnel.

Best regards
Sebastian