Bubbles

Starting point for bubbles is always an existing → core fluid simulation.

Scene Setup

• Set the domain's simulation state to → “Cache” (“yellow rocket”).
• Other, already simulated Hybrido secondary fluids emitters have be set to “Cache” as well.
• Add a “Bubbles” emitter from the “Hybrido” shelf.
• Reset the scene.
  

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:

• If not done already add a → “k Volume” daemon and adjust it to the scene with the R key.
• Or make sure that the bubbles particles will be enclosed inside a container or a cube.

You can control the emission of particles with the parameters under → “Bubbles Creation”:

• Two threshold values are used to control in which parts of the core fluid splashes will occur.
• The higher the thresholds, the less particles you will get.
• The “Emission rate” parameter is also responsible for the number of particles.

If you want to control the bubble's rising speed go to → “Bubbles Dynamics”. The most relevant parameter is “Buoyancy force”.

Simulate.