vorticity_influence

This applies vorticity confinement to the velocities of an simulation. This helps encourage small scale vortices in the simulation that might get otherwise damped. It will make the simulation appear more turbulent and less viscous.This node only works with simulate_aero currently.

To use this node, plug its output into the influences input of simulate_aero.

Inputs

influence

One may optionally connect an influence field out_influence into this port. For example a modulate_influence node could be used to make the vorticity high only where the voxel_temperature is high. Any number of influence fields may be added to the daisy chain to build a complex field.

enable

Turn off to disable the effect. Disabling makes it a pass through node. Note that any other influence fields connected to the influence input port will still be active when this is disabled.

vorticity

The strength of the added acceleration to apply to the simulation. In general the best value for this is dependent on the detail_size for the simulation. If the detail size is smaller then smaller vorticity values should be used to keep the simulation from becoming too noisy.

scale

This is the degree to which the vorticity value is scaled up for adaptively larger voxels in aero simulations. Often these larger voxels will be in regions with little or no density. The default scale of zero simply applies the same push to all voxels regardless of size. At a value of 1.0 the push will be totally proportionate to the relate voxel size in the tile tree. The result can be more large scale vorticity. The range of this property is 0.0 to 1.0.

Outputs

out_influence

An output influence object that one can connect to simulation nodes or other influence nodes.