When bubble particles reach the fluid's surface they can be converted into foam. This way it is possible to create nice trails of foam, for example from submerged objects or rotating propellors. The foam will float on top of the Hybrido fluid surface and here you can adjust its characteristics.

On surface

There are two options:

"Convert to foam" converts the bubbles into foam particles when they reach the surface.
"Destroy" deletes the bubbles particles when they reach the surface.

Buoyancy force

Buoyancy counteracts gravity and makes objects rise. With a value of 9.8 for the vertical direction you will get a natural behaviour, but it is also possible to accelerate or decelerate the bubbles with higher or lower values. You can also add horizontal components to influence the bubbles' motion. RealFlow's → “Axis Setup” defines the vertical and horizontal axes. Click on "+" for sliders.

Bubbles min lifetime

If you want to destroy the particles after a certain time then you can define a lifespan with “Bubbles min | max lifetime”. The actual lifetime will be somewhere between both values, and this value defines the lower limit. The value is given seconds.

Bubbles max lifetime

If you want to destroy the particles after a certain time then you can define a lifespan with “Foam min | max lifetime”. The actual lifetime will be somewhere between both values, and this value defines the upper limit. The value is given seconds.

Bubbles min friction

Friction is a very good method for controlling the bubble's velocities. A particle's actual friction will be somewhere between the “Bubbles min | max” friction” values. The parameter is dimensionless and ranges between 0.0 and 1.0. With a value of 0.0 the particle is not affected by the surrounding particles.

Bubbles max friction

Friction is a very good method for controlling the bubble's velocities. A particle's actual friction will be somewhere between the “Bubbles min | max” friction” values. The parameter is dimensionless and ranges between 0.0 and 1.0. With a value of 0.0 the particle is not affected by the surrounding particles.

Bubbles surface offset

With 0.0, particles are created directly at the fluid's surface, but you can also define an offset between the core fluid and the bubbles. This distance is measured in metres.

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