Foam can be created from the HyFLIP fluid, already existing splash or bubbles particles, or even photos of real foam. The particles are entirely controlled by RealFlow and the foam emitter's parameters. Foam creates typical, filament-like structures on the water surface.
Quick Start
Starting point for splashes is always an existing HyFLIP simulation. Here it is the simulation from → "HyFLIP - Quick Start":
- Set the domain's simulation state to → “Cache” (“yellow rocket”).
- Add a "Foam" emitter from the “Hybrido” shelf.
- Unlink the emitter from the → “Hub” in the → “Relationship Editor”.
- Connect it with the HyFLIP domain.
- If there is a → “k Volume” daemon already connect it with the emitter.
- Reset the scene.
If you want to use the foam emitter's “From splash” option, a splash simulation is required – the associated splash node has to be set to “Cache” as well.
What you see now is a cross in the viewport's centre, indicating that the emitter is not bounded. You can prevent the particles from leaving the domain:
- Add a → “k Volume” daemon – if necessary – and adjust it to the scene with the R key.
- If not done already connect the daemon with the emitter in the → “Relationship Editor” (see above).
- Or make sure that the foam particles will be enclosed inside a container or a cube.
You can control the emission of particles with the parameters under → “Foam Creation”:
- A wide variety of threshold values are used to control in which parts of the HyFLIP fluid splashes will occur. These areas can be → previewed.
- The higher the thresholds, the less particles you will get ("@ angle threshold" is the only exception).
- If you want to create foam from the HyFLIP fluid only disable “From Splash”.
- The “@ emission rate” parameter is also responsible for the number of particles. With foam, this parameter is very sensitive.
Simulate.