Controlled Reservoir (2P)
Two-phase fluid reservoir at variable pressure and temperature
Libraries:
Simscape /
Foundation Library /
Two-Phase Fluid /
Elements
Description
The Reservoir (2P) block sets boundary conditions in a two-phase fluid network. The reservoir is assumed infinite in size.
Port A represents the reservoir inlet. The flow resistance between port A and the reservoir interior is assumed negligible. The pressure at port A is therefore equal to the pressure inside the reservoir.
The specific enthalpy and specific internal energy at the reservoir inlet depend on the direction of flow. Fluid leaves the reservoir at the reservoir pressure and specific internal energy. Fluid enters the reservoir at the reservoir pressure, but the specific internal energy is determined by the two-phase fluid network upstream.
The block provides independent selection of pressure specification and energy specification, by using the Reservoir pressure specification and Reservoir energy specification parameters. Depending on the selected options, the block exposes the relevant input ports to provide the control signals for the selected quantities.
For certain option combinations, the pressure inside the reservoir must be less than the critical pressure because the saturation curves are not defined above the critical point. If you select such a combination, the Reservoir pressure above critical parameter lets you decide what happens when the fluid pressure exceeds the critical pressure.
This block also serves as a reference connection for the Pressure & Internal Energy Sensor (2P) block. In this case, the measured pressure and specific internal energy are relative to the reservoir pressure and specific internal energy.
Ports
Input
Conserving
Parameters
Extended Capabilities
Version History
Introduced in R2015b