This shelf tool sets up a falling smoke effect resembling dry ice fog. The preset uses a negative Scale value for temperature sourcing on the Volume Source node to create cold smoke that will fall instead of rise.
The preset uses a high diffusion rate to make the smoke settle quickly and create the appropriate "drizzling" look.
On the Pyro Solver node, the dissipation range is remapped to start below zero, to correctly evaporate the fog over time.
Use the Disturbance and Turbulence controls on the pyro solver to add detail or change motion.
If the object has a velocity point attribute (
v), the Volume Rasterize Attributes SOP will create a velocity volume for the simulation.
To add velocity attributes to the object, use the Point Velocity SOP.
Use the disturbance and turbulence controls on the Pyro Solver’s Shape tab to add detail or change motion.