Houdini 17.0 Nodes VOP nodes

Advect by Volumes VOP node

Advects a position by a set of volume primitives stored in a disk file.

Advects the provided position through the velocity field contained in the named set of three volumes or vector VDB. The Single Step method takes only a single step in the velocity field, but the various Trace methods can take multiple steps within a voxel to avoid violating the CFL condition, according to the provided Timestep.

The higher order Advection Methods are more accurate but take multiple velocity samples per step and are more expensive to evaluate. Higher CFL values will result in fewer steps overall but more errors.

See also

VOP nodes