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A simulator is a Phoenix object that controls the simulation, and enables you to create fluids like liquids and gasses that interact with the surrounding environment.

You can think of a Phoenix Simulator as a 3D box, inside which simulations of fluids and Rigid Body Dynamics are performed. The box is divided into small cells, called voxels, which is why the box is referred to as a Simulation Grid. The voxels inside the grid can be filled with just about any type of gas or liquid, and contain the fluid's properties at a position and given time.

For each frame in your simulation, Phoenix looks at each voxel and calculates whether there is any fluid there, based on the settings you give the Phoenix sim. The simulator will also account for obstacles, such as geometry, as well as participating forces in the scene, and so forth.

Although Chaos Phoenix for Maya uses a single Simulator node for both, Phoenix simulations can generally be divided into two types:

Since Liquid simulations have peculiar properties that differ from those of Fire and Smoke simulations, the simulator contains a separate Liquid rollout. There are also separate rollouts for controlling when Foam, Splash and Mist Particles should be born, and how they should behave.

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