Dario Ortisi shows a quick way to create a tornado effect with Maya Bifrost.

Check out this little quick tutorial from Senior 3D Artist Dario Ortisi on making a toy tornado effect with Bifrost Graph. The tutorial uses the oriented point normal and voxel field velocity to animate an Aero simulation around a defined shape. The basic voxel_field for the Aero takes on the voxel_velocity. 

Aero simulations in Bifrost cover effects like smoke, mist, and any other gas-type effect. Check out this dive into Aero by Robert Bridson, who explains the math that makes Bifrost’s Aero solver so powerful.