********************** Fluid Inflow / Outflow ********************** To control the volume of the fluid simulation, you can set objects in the scene to add or absorb fluid within the :doc:`Fluid Domain `. Inflow ====== .. figure:: /images/physics_fluid_types_inflow.jpg Fluid Inflow Settings. Volume Initialization Type See :ref:`Volume Initialization Type ` This object will put fluid into the simulation, like a water tap. Inflow Velocity Speed of the fluid that is created inside of the object. Local Coordinates/Enable Use local coordinates for the inflow. This is useful if the inflow object is moving or rotating, as the inflow stream will follow/copy that motion. If disabled, the inflow location and direction do not change. Animated Mesh/Export See :ref:`Animated Mesh/Export ` Outflow ======= .. figure:: /images/physics_fluid_types_outflow.jpg Fluid Outflow Settings. Any fluid that enters the region of this object will be deleted (think of a drain or a black hole). This can be useful in combination with an inflow to prevent the whole domain from filling up. When enabled, this is like a tornado (waterspout) or "wet vac" vacuum cleaner, and the part where the fluid disappears will follow the object as it moves around. Volume Initialization Type See :ref:`Volume Initialization Type ` Animated Mesh/Export See :ref:`Animated Mesh/Export `