Outlet
The Outlet node defines an edge or point where fluid leaves the gap.
Outlet Settings
Select an Outlet condition — Zero pressure (the default), Pressure, Normal outflow velocity, or Outflow. The option Starvation is also available when Liquid with cavitation is selected in the Physical Model section.
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For Zero pressure, pfilm = 0 applies on the boundary, edge, or point.
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For Pressure, enter a Pressure pfilm0 (SI unit: Pa) to impose pfilm = pfilm0 on the boundary, edge, or point. The default is 0 Pa. If the reference pressure pref = 0 in the Reference Pressure section, then pfilm0 represents the absolute pressure, otherwise pfilm0 sets the relative pressure with respect to pref.
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For Normal outflow velocity, enter a Normal outflow velocity U0. The default is 0 m/s.
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For Outflow, the fluid is allowed to leave the gap without explicitly imposing a value of pressure or velocity.
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For Starvation, enter a value for the Fluid fraction θ0. The default is 0.6 (dimensionless).