The Active Bodies feature in Phoenix FD allows for two-way interaction between scene geometry and the Phoenix FD simulation.
When an object is selected as an Active Body, the simulation both influences and is influenced by the Active Body's movement. This allows objects such as boats to float over a Phoenix FD ocean simulation and be affected by its waves, or objects placed on the ground to be washed away by flooding waters.
Objects selected as Active Bodies may also be animated in which case they will follow the animation while also being influenced by the Phoenix FD simulation. A speedboat simulation is a great example of this mutual interaction in action - the speedboat is heavily affected by the water while also able to cut through the waves and produce large amounts of foam. You can balance between the influence of the animation and the fluid from an Active Body's right click properties'Original Animation Influence option.
UI Text Box
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medium
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infowarning
The Active Bodies simulation currently supports interaction between scene geometry and the Phoenix FD Liquid Simulator.
Interaction between Active Bodies and the Phoenix FD Fire/Smoke Simulator is not supported yet.
Mutual interaction between the Active Bodies themselves is not supported yet.
