Hello friends,
I am not using TFD regularly, not so experienced 
I have a problem with simulation, please see link below, some strange jiggle up and down I don’t know how to fix it.
Can someone help me, please:)
Cheers,
try vorticity at zero
also make sure your car body has thickness greater than the voxel size to act as a collider, You can set up an invisible dummy car for that if needed
I would avoid all temperature and buoyancy etc and just use wind to drive the smoke…it IS a wind tunnel
I do everything that you suggested but same problem, I put simulation in the attachment in case you have the time to check it 
thanks in advance
ICAR SIMUL2.zip (1.1 MB)
ok on it give me 30 mins
Oh, beautiful… Thank you very much for you time and fast reply You save me from miserable night
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