Smooth decay of smoke simulation

Question

I am trying to make a dust simulation. The kind of dust that appears when you knock out the dust from the carpet.

I use geometry as flow behavior.

cylinder as effector and wind. But my "dust" disappears instantly and doesn't feel like dust at all.

I expect that when the dust spreads to some distance, a cavity will form in the center and the dust itself will disappear more slowly.

Help me improve my animation please.

(Blender v 3.3.0)

Answer 1

Your Wind pressures in the scene in constant axe direction and doesn't let smoke to roll.
You need only central (point) force.

Try to limit Wind – Falloff > Radial > Max Distance ...

Notes:

• I'm not sure if 50 frames in Cache is enough to take effect.
• For Domain set a bit of Vorticity.
• Smoke appearance is set in Smoke > Properties > Viewport ...