[kks7524]

hello i'm studying cfd at a beginner level
now i'm using fluent 2022 R2 version for house ventilation analyze

with a space claim software, i made simple 3d model of house as shown in the images



I tried to cap the inlet (round hole at the top) and outlets (two square holes at the middle, large window on the side) while creating a mesh using this 3D model using watertight geometry, but it wasn't easy.

is this model has limitation(then i'll figure out the other way)?
or there is any method to make it?

Any help would be appreciated to me
thank you for regarding