Change fluid behavior at
the container boundaries
The boundaries of a fluid container not only define where the fluid can exist, but for dynamic fluids, they affect the behavior of the fluid.
By default, all the boundaries of a fluid container affect dynamic behavior in the same way a container would in the physical world. For example, Density emitting towards a boundary collides with the boundary just as smoke rising to a ceiling collides with the ceiling.
You can define the boundaries so they have no effect on fluid behavior. For example, if you set a boundary to have no effect, Density emitting towards it would not collide with it but continue as though the boundary were not there. Even though the fluid appears to leave the container, it doesn’t. Fluid can only exist inside a container.
You can also define the boundaries so that the fluid wraps for continuous behavior along the boundary.
To define fluid behavior at the container boundaries