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Documentation : Effex : Objects : Forces : GF::Paritcle Turbulence

### Params

Params Constraints
Params

#### Particles

Takes a particle group that should contain vorticity particles (emitted into it for example with a Particle Grid/Mesh Emitter).

#### Kernel

Defines the falloff used in the turbulence calculation. See Falloff Kernel.
The resulting turbulent force is based on a weighted average of neighboring particles and their vorticity. Different kernels (falloffs) result in different turbulent behavior. This is a matter of trial & error but is a good way to sensitively adjust the current turbulence.
If no Kernel is specified the setting "Falloff Kernel" is used instead.

#### Duration

Takes a Duration node in order to define the force emission duration. See Duration.

#### Intensity

The overall (unit-free) intensity of the resulting force.

#### Spatial Adaptivity

Follows

#### Influence Radius

Defines the maximum distance (given in voxels/grid cells) around each particle to search for neighboring particles and vorticities.
A possibly given Falloff Kernel uses this distance as its range to calculate the influence the found neighbors have.

#### Vortex stretching minimum [/1000]

Defines the minimum length of vortex stretching allowed.
A vortex in a turbulent flow is not perfectly round. Instead it stretches along a certain direction and at some point starts to 'fold'.
This results in smaller vortices being formed out of it. The faster/stronger it folds, the more turbulent the result will be.
So it is a fundamental concept concerning vorticity.

#### Vortex stretch maximum [/1000]

Defines the maximum length of vortex stretching allowed.
A vortex in a turbulent flow is not perfectly round. Instead it stretches along a certain direction and at some point starts to 'fold'.
This results in smaller vortices being formed out of it. The faster/stronger it folds, the more turbulent the result will be.
So it is a fundamental concept concerning vorticity.

#### Falloff Kernel

Defines the falloff kernel used. The resulting turbulent force is based on a weighted average of neighboring particles and their vorticity. Different kernels (falloffs) result in different turbulent behavior. This is a matter of trial & error but is a good way to sensitively adjust the current turbulence.
Gaussian
Poly6
Poly6 smooth
Viscosity
Spikey
Spikey smooth
Smooth
sharp
Wyvill
Blinn
Cubic Spline
Polynominal
Custom