PartialLumpedVolumeLumped volume with mass and energy balance |
Information
This information is part of the Modelica Standard Library maintained by the Modelica Association.
Interface and base class for an ideally mixed fluid volume with the ability to store mass and energy. The following boundary flow and source terms are part of the energy balance and must be specified in an extending class:
Qb_flow, e.g., convective or latent heat flow rate across segment boundary, andWb_flow, work term, e.g., p*der(fluidVolume) if the volume is not constant.
The component volume fluidVolume is an input that needs to be set in the extending class to complete the model.
Further source terms must be defined by an extending class for fluid flow across the segment boundary:
Hb_flow, enthalpy flow,mb_flow, mass flow,mbXi_flow, substance mass flow, andmbC_flow, trace substance mass flow.
Parameters (10)
| energyDynamics |
Value: system.energyDynamics Type: Dynamics Description: Formulation of energy balance |
|---|---|
| massDynamics |
Value: system.massDynamics Type: Dynamics Description: Formulation of mass balance |
| substanceDynamics |
Value: massDynamics Type: Dynamics Description: Formulation of substance balance |
| traceDynamics |
Value: massDynamics Type: Dynamics Description: Formulation of trace substance balance |
| p_start |
Value: system.p_start Type: AbsolutePressure (Pa) Description: Start value of pressure |
| use_T_start |
Value: true Type: Boolean Description: = true, use T_start, otherwise h_start |
| T_start |
Value: if use_T_start then system.T_start else Medium.temperature_phX(p_start, h_start, X_start) Type: Temperature (K) Description: Start value of temperature |
| h_start |
Value: if use_T_start then Medium.specificEnthalpy_pTX(p_start, T_start, X_start) else Medium.h_default Type: SpecificEnthalpy (J/kg) Description: Start value of specific enthalpy |
| X_start |
Value: Medium.X_default Type: MassFraction[Medium.nX] (kg/kg) Description: Start value of mass fractions m_i/m |
| C_start |
Value: Medium.C_default Type: ExtraProperty[Medium.nC] Description: Start value of trace substances |
Inputs (1)
| fluidVolume |
Type: Volume (m³) Description: Volume |
|---|
Components (2)
 |
system |
Type: System Description: System properties |
|---|---|---|
 |
medium |
Type: BaseProperties |
Extended by (4)
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Modelica.Fluid.Fittings Splitting/joining component with static balances for a dynamic control volume |
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Modelica.Fluid.Machines.BaseClasses Base model for centrifugal pumps |
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Modelica.Fluid.Vessels.BaseClasses Lumped volume with a vector of fluid ports and replaceable heat transfer model |
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Modelica.Fluid.Examples.AST_BatchPlant.BaseClasses Tank with inlet/outlet ports and with inlet ports at the top |