Air Flow Direction

Using SimScale
1

I’ve made a simulation of airflow around a building, and I need help with a few things. Why does the airflow circle around my enclosed area, why can’t I see a 3D visual of the model’s output instead of just using a 2D cross-section, and lastly, why is the animation only one frame?

(SimScale)

image
image1957×1108 177 KB

2

Hi there, there is an issue with the velocity inlet value. According to the orientation of the model, Ux should be negative.

velocity inlet
velocity inlet2300×1281 135 KB

Best regards,
Fillia

3

Thank you! That makes sense, but why is the air circling throughout my simulation? I only have Ux with a value.