.LibRAS.Interfaces.PartialTwoPortTransport

Information

This component transports fluid between its two ports, without storing mass or energy. Energy may be exchanged with the environment though, e.g., in the form of work. PartialTwoPortTransport is intended as base class for devices like orifices, valves and simple fluid machines.

Three equations need to be added by an extending class using this component:

• the momentum balance specifying the relationship between the pressure drop dp and the mass flow rate m_flow,
• port_b.h_outflow for flow in design direction, and
• port_a.h_outflow for flow in reverse direction.

Moreover appropriate values shall be assigned to the following parameters:

• dp_start for a guess of the pressure drop
• m_flow_small for regularization of zero flow.