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Added base class to place ports on top and bottom
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IBPSA/Fluid/Storage/BaseClasses/PartialTwoPortInterface.mo
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| within IBPSA.Fluid.Storage.BaseClasses; | ||
| partial model PartialTwoPortInterface | ||
| "Partial model transporting fluid between two ports without storing mass or energy" | ||
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| replaceable package Medium = | ||
| Modelica.Media.Interfaces.PartialMedium "Medium in the component" | ||
| annotation (choices( | ||
| choice(redeclare package Medium = IBPSA.Media.Air "Moist air"), | ||
| choice(redeclare package Medium = IBPSA.Media.Water "Water"), | ||
| choice(redeclare package Medium = | ||
| IBPSA.Media.Antifreeze.PropyleneGlycolWater ( | ||
| property_T=293.15, | ||
| X_a=0.40) | ||
| "Propylene glycol water, 40% mass fraction"))); | ||
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| parameter Boolean allowFlowReversal = true | ||
| "= false to simplify equations, assuming, but not enforcing, no flow reversal" | ||
| annotation(Dialog(tab="Assumptions"), Evaluate=true); | ||
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| Modelica.Fluid.Interfaces.FluidPort_a port_a( | ||
| redeclare final package Medium = Medium, | ||
| m_flow(min=if allowFlowReversal then -Modelica.Constants.inf else 0), | ||
| p(start=Medium.p_default), | ||
| h_outflow(start = Medium.h_default, nominal = Medium.h_default)) | ||
| "Fluid connector a (positive design flow direction is from port_a to port_b)" | ||
| annotation (Placement(transformation(extent={{-10,90},{10,110}}))); | ||
| Modelica.Fluid.Interfaces.FluidPort_b port_b( | ||
| redeclare final package Medium = Medium, | ||
| m_flow(max=if allowFlowReversal then +Modelica.Constants.inf else 0), | ||
| p(start=Medium.p_default), | ||
| h_outflow(start = Medium.h_default, nominal = Medium.h_default)) | ||
| "Fluid connector b (positive design flow direction is from port_a to port_b)" | ||
| annotation (Placement(transformation(extent={{10,-110},{-10,-90}}))); | ||
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| parameter Modelica.Units.SI.MassFlowRate m_flow_nominal | ||
| "Nominal mass flow rate" annotation (Dialog(group="Nominal condition")); | ||
| parameter Modelica.Units.SI.MassFlowRate m_flow_small(min=0) = 1E-4*abs( | ||
| m_flow_nominal) "Small mass flow rate for regularization of zero flow" | ||
| annotation (Dialog(tab="Advanced")); | ||
| // Diagnostics | ||
| parameter Boolean show_T = false | ||
| "= true, if actual temperature at port is computed" | ||
| annotation ( | ||
| Dialog(tab="Advanced", group="Diagnostics"), | ||
| HideResult=true); | ||
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| Modelica.Units.SI.MassFlowRate m_flow(start=_m_flow_start) = port_a.m_flow | ||
| "Mass flow rate from port_a to port_b (m_flow > 0 is design flow direction)"; | ||
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| Modelica.Units.SI.PressureDifference dp( | ||
| start=_dp_start, | ||
| displayUnit="Pa") = port_a.p - port_b.p | ||
| "Pressure difference between port_a and port_b"; | ||
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| Medium.ThermodynamicState sta_a= | ||
| if allowFlowReversal then | ||
| Medium.setState_phX(port_a.p, | ||
| noEvent(actualStream(port_a.h_outflow)), | ||
| noEvent(actualStream(port_a.Xi_outflow))) | ||
| else | ||
| Medium.setState_phX(port_a.p, | ||
| noEvent(inStream(port_a.h_outflow)), | ||
| noEvent(inStream(port_a.Xi_outflow))) | ||
| if show_T "Medium properties in port_a"; | ||
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| Medium.ThermodynamicState sta_b= | ||
| if allowFlowReversal then | ||
| Medium.setState_phX(port_b.p, | ||
| noEvent(actualStream(port_b.h_outflow)), | ||
| noEvent(actualStream(port_b.Xi_outflow))) | ||
| else | ||
| Medium.setState_phX(port_b.p, | ||
| noEvent(port_b.h_outflow), | ||
| noEvent(port_b.Xi_outflow)) | ||
| if show_T "Medium properties in port_b"; | ||
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| protected | ||
| final parameter Modelica.Units.SI.MassFlowRate _m_flow_start=0 | ||
| "Start value for m_flow, used to avoid a warning if not set in m_flow, and to avoid m_flow.start in parameter window"; | ||
| final parameter Modelica.Units.SI.PressureDifference _dp_start(displayUnit= | ||
| "Pa") = 0 | ||
| "Start value for dp, used to avoid a warning if not set in dp, and to avoid dp.start in parameter window"; | ||
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| annotation ( | ||
| preferredView="info", | ||
| Documentation(info="<html> | ||
| <p> | ||
| This partial class implements the same functionality as | ||
| <a href=\"modelica://IBPSA.Fluid.Interfaces.StaticTwoPortHeatMassExchanger\"> | ||
| IBPSA.Fluid.Interfaces.StaticTwoPortHeatMassExchanger</a>, | ||
| except that <code>port_a</code> and <code>port_b</code> are placed at the top and bottom | ||
| of the component. | ||
| </p> | ||
| <h4>Implementation</h4> | ||
| <p> | ||
| The implementation is done in this package as opposed to | ||
| <a href=\"modelica://IBPSA.Fluid.Interfaces\"> | ||
| IBPSA.Fluid.Interfaces</a> | ||
| as it is only used by the storage model, and may be removed when the tool limitations | ||
| that are discussed in | ||
| <a href=\"https://github.com/ibpsa/modelica-ibpsa/issues/1794\">IBPSA, #1794</a>. | ||
| are removed. | ||
| </p> | ||
| </html>", revisions="<html> | ||
| <ul> | ||
| <li> | ||
| September 20, 2023, by Michael Wetter:<br/> | ||
| First implementation to address | ||
| <a href=\"https://github.com/ibpsa/modelica-ibpsa/issues/1794\">IBPSA, #1794</a>. | ||
| </li> | ||
| </ul> | ||
| </html>")); | ||
| end PartialTwoPortInterface; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,5 +1,6 @@ | ||
| Buoyancy | ||
| IndirectTankHeatExchanger | ||
| PartialStratified | ||
| PartialTwoPortInterface | ||
| ThirdOrderStratifier | ||
| Examples |