With the “Hybrido Mesh” engine it is possible to “bake” the core fluid's displacement to the final mesh and there are several parameters to control the final look. With these settings you separate the displacement from the splashes. If your core fluid simulation has been simulated without displacement, this parameter set can be ignored. Please bear in mind that this option is very RAM-intensive and creates very large meshes – several million polygons per frames are absolutely normal.
Use displacement
Here you can decide whether you want to add displacement information to the mesh or not. “Yes” unlocks the associated parameters.
Splash attenuation
“Attenuation” can also be explained as damping – or better – thinning. “Splash attenuation” means that areas of the core fluid that behave more like splashes become thinner in the mesh. These areas normally do not need any displacement at all.
@ splash attenuation factor
With this parameter you can control the amount of “thinning”. 0.0 does not create any attenuation at all, while 1.0 represents the highest value.
Vorticity attenuation
The mode of operation is very similar to “Splash attenuation”, but here areas with vorticity are affected. Please bear in mind that the grid domain's “Vorticity” channel has to be activated before the simulation starts, because otherwise this option does not have any effect at all. By default, the “Vorticity” channel is disabled:
HY_Domain node > Node Params > Particle Channels > Vorticity
@ vorticity normalization factor
A fluid's vorticity values can cover a very broad range and therefore, the values have to be normalized. Normalization means that all values are set in relation to a constant value: the normalization factor you enter here. As a result, all vorticity values will range between 0 and 1.
@ vorticity attenuation factor
To enhance or weaken the vorticity attenuation effect, this parameter can be used and works as a multiplier:
Vorticity attenuation = Normalized vorticity * @ vorticity attenuation factor