About Outlets

Outlets specify the openings where fluid flows out of a region to the surroundings.

See Also
Defining a Pressure Outlet
Defining a Mass Flow Split Outlet

The following types of outlets are available, and they provide different methods for describing the velocity or pressure with which fluid flows out of a region.

  • Pressure outlets describe the static pressure at an opening where fluid flows out of a region.
  • Mass flow split outlets describe the proportion of mass flowing out of each outlet in the simulation. If you create two mass flow split outlets with weights set to 2 and 1, twice as much mass will flow out of the first outlet as the second.

You must define at least one outlet for your simulation. In addition, you must use one type of outlet exclusively; you cannot define both pressure outlets and mass flow split outlets in the same simulation.

When you define a pressure outlet, you can describe where the opening is and the static pressure at that opening.

Pressure outlets can be configured to prevent recirculation, but the fluid will recirculate by default, and you can configure several aspects of the recirculation, including the mass fraction of each non-background species at the pressure outlet.