.ThermoPower.Water

Information

This package contains models of physical processes and components using water or steam as working fluid.

All models use the StandardWater medium model by default, which is in turn set to Modelica.Media.Water.StandardWater at the library level. It is of course possible to redeclare the medium model to any model extending Modelica.Media.Interfaces.PartialMedium (or PartialTwoPhaseMedium for 2-phase models). This can be done by directly setting Medium in the parameter dialog, or through a local package definition, as shown e.g. in Test.TestMixerSlowFast. The latter solution allows to easily replace the medium model for an entire set of components.

All models with dynamic equations provide initialisation support. Set the initOpt parameter to the appropriate value:

The latter options can be useful when two or more components are connected directly so that they will have the same pressure or temperature, to avoid over-specified systems of initial equations.

Contents

Name Description
 Flange Flange connector for water/steam flows
 FlangeA A-type flange connector for water/steam flows
 FlangeB B-type flange connector for water/steam flows
 StandardWater
 SourcePressure Pressure source for water/steam flows
 SinkPressure Pressure sink for water/steam flows
 SourceMassFlow Flowrate source for water/steam flows
 SinkMassFlow Flowrate sink for water/steam flows
 ThroughMassFlow Prescribes the flow rate across the component
 PressDropLin Linear pressure drop for water/steam flows
 PressDrop Pressure drop for water/steam flows
 Header Header with metal walls for water/steam flows
 Mixer Mixer with metal walls for water/steam flows
 Tank Open tank with free surface
 Flow1DFV 1-dimensional fluid flow model for water/steam (finite volumes)
 Flow1DFV2w Same as Flow1DFV with two walls and heat transfer models
 Flow1DFV2ph 1-dimensional fluid flow model for water/steam (finite volumes, 2-phase)
 Flow1DFV2ph2w Same as Flow1DFV with two walls and heat transfer models
 Flow1DFEM 1-dimensional fluid flow model for water/steam (finite elements)
 Flow1DFEM2ph 1-dimensional fluid flow model for water/steam (finite elements)
 FlowJoin Joins two water/steam flows
 FlowSplit Splits a flow in two
 SensT Temperature sensor for water-steam
 SensT1 Temperature sensor for water/steam flows, single port
 SensW Mass Flowrate sensor for water/steam
 SensP Pressure sensor for water/steam flows
 Accumulator Water-Gas Accumulator
 Drum Drum for circulation boilers
 DrumEquilibrium
 ValveLin Valve for water/steam flows with linear pressure drop
 ValveLiq Valve for liquid water flow
 ValveVap Valve for steam flow
 ValveLiqChoked Valve for liquid water flow, allows choked flow conditions
 Pump Centrifugal pump with ideally controlled speed
 PumpNPSH
 PumpMech Centrifugal pump with mechanical connector for the shaft
 SprayCondenser Model of a spray condenser assuming themodynamic equilibrium between the phases
 BarometricCondenser Model of a barometric condenser including the barometric leg
 CoolingTower Cooling tower with variable speed fan
 ExpansionTankIdeal Ideal expansion tank with prescribed pressure
 f_chen Chen's correlation for two-phase flow in a tube
 f_colebrook Fanning friction factor for water/steam flows
 f_colebrook_2ph Fanning friction factor for a two phase water/steam flow
 f_dittus_boelter Dittus-Boelter correlation for one-phase flow in a tube
 SteamTurbineStodola Steam turbine: Stodola's ellipse law and constant isentropic efficiency
 SteamTurbineUnit Simplified HP+LP turbine unit for steam flows
 Utility Utility models
 BaseClasses Contains partial models
 Drum2States
 Flow1D 1-dimensional fluid flow model for water/steam (finite volumes)
 Flow1DDB 1-dimensional fluid flow model for water or steam flow (finite volumes, Dittus-Boelter heat transfer)
 Flow1D2ph 1-dimensional fluid flow model for water/steam (finite volumes, 2-phase)
 Flow1D2phDB 1-dimensional fluid flow model for 2-phase boiling flow (finite volumes, 2-phase, computation of heat transfer coeff.)
 Flow1D2phChen 1-dimensional fluid flow model for 2-phase boiling flow (finite volumes, 2-phase, Chen correlation)
 Flow1Dfem 1-dimensional fluid flow model for water/steam (finite elements)
 Flow1Dfem2ph 1-dimensional fluid flow model for water/steam (finite elements)
 SourceP Pressure source for water/steam flows
 SinkP Pressure sink for water/steam flows
 SourceW Flowrate source for water/steam flows
 SinkW Flowrate sink for water/steam flows
 ThroughW Prescribes the flow rate across the component

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