Details of various Inlet and outlet boundary types
 

Hi, dear frields, I am using Gambit to generate the mesh. When I specify boundary types, I find that there are 4 OUTLET types of OUTFLOW, OUTLET_VENT, PRESSURE_OUTLET and RECIRCULATION_OUTLET and 5 INLET types of MASS_FLOW_INLET, INLET_VENT, PRESSURE_INLET, VELOCITY_INLET and RECIRCULATION_INLET. I am interested in the detailed differences between different types. Would anyone like to clarify me?

Thanks in advance.
with best regards,
Chiven