You begin the lesson by creating a two-dimensional fluid container. The fluid container is the basis for dynamic and non-dynamic fluid effects. As its name implies, it contains the fluid effect. Fluids cannot exist outside a fluid container.
Next, you add fluid to the container. To do this, you add values to the container for specific properties of the fluid: Density, Color, Velocity, Fuel, and Temperature. You can add any or all of these properties to create a fluid effect. One way to put properties into a container is to create them with a fluid emitter.