I am trying to simulate indoor microclimate to assess nat ventilation effectivity on open office spaces scattered around various levels of a 3 story atrium. It is quite a complex zone, but I´m interested in taking into account the air movement all around. I manage to produce a closed brep for the atrium, but as soon as I add any window, the result is an open Brep. I have rebuilt the zone several times without success. I would greatly appreciate any help!.
Best ArturoOpenBrep.gh (601.3 KB)