I want to create a cold smoke simulation to make a ghost-like object. I want the smoke to be flowing downwards, similar to the one in this video: https://www.youtube.com/watch?v=d8V16BFxGNs&list=PL2DcM9Gsef17oXN4ihC4vdNZqiPHH2C6U&index=14.
I have tried using the smoke simulation feature in 2.90, but I couldn't get the effect I wanted after playing around with the buoyancy and heat settings for both the domain and the inflow.