modelSourceP

Pressure source for gas flows
Diagram of SourcePOpen the diagram
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Extends from Modelica.Icons.ObsoleteModel (Icon for classes that are obsolete and will be removed in later versions), Icons.Gas.SourceP.

Information

Modelling options

The actual gas used in the component is determined by the replaceable Medium package.In the case of multiple componet, variable composition gases, the nominal gas composition is given by Xnom, whose default value is Medium.reference_X .

If R is set to zero, the pressure source is ideal; otherwise, the outlet pressure decreases proportionally to the outgoing flowrate.

If the in_p connector is wired, then the source pressure is given by the corresponding signal, otherwise it is fixed to p0.

If the in_T connector is wired, then the source temperature is given by the corresponding signal, otherwise it is fixed to T.

If the in_X connector is wired, then the source massfraction is given by the corresponding signal, otherwise it is fixed to Xnom.

Parameters

TypeNameDefaultDescription
Medium.AbsolutePressurep0101325Nominal pressure
Units.HydraulicResistanceR0Hydraulic resistance
Medium.TemperatureT300Nominal temperature
Medium.MassFraction[Medium.nX]XnomMedium.reference_XNominal gas composition
BooleanallowFlowReversalsystem.allowFlowReversal= true to allow flow reversal, false restricts to design direction

Connectors

TypeNameDefaultDescription
FlangeBflange
Modelica.Blocks.Interfaces.RealInputin_p
Modelica.Blocks.Interfaces.RealInputin_T
Modelica.Blocks.Interfaces.RealInput[Medium.nX]in_X

Components

TypeNameDefaultDescription
Medium.BasePropertiesgas
ThermoPower.SystemsystemSystem wide properties

Contents

NameDescription
Medium

Revisions

  • 19 Nov 2004 by Francesco Casella:
    Removed p0fix and Tfix and Xfix; the connection of external signals is now detected automatically.

    • Adapted to Modelica.Media
  • 1 Oct 2003 by Francesco Casella:
    First release.