PartialLumpedFlowBase class for a lumped momentum balance |
Information
This information is part of the Modelica Standard Library maintained by the Modelica Association.
Interface and base class for a momentum balance, defining the mass flow rate m_flow
of a given Medium in a flow model.
The following boundary flow and force terms are part of the momentum balance and must be specified in an extending model (to zero if not considered):
Ib_flow, the flow of momentum across model boundaries,F_p[m], pressure force, andF_fg[m], friction and gravity forces.
The length of the flow path pathLength is an input that needs to be set in an extending class to complete the model.
Parameters (3)
| allowFlowReversal |
Value: system.allowFlowReversal Type: Boolean Description: = true to allow flow reversal, false restricts to design direction (m_flow >= 0) |
|---|---|
| momentumDynamics |
Value: system.momentumDynamics Type: Dynamics Description: Formulation of momentum balance |
| m_flow_start |
Value: system.m_flow_start Type: MassFlowRate (kg/s) Description: Start value of mass flow rates |
Inputs (1)
| pathLength |
Type: Length (m) Description: Length flow path |
|---|
Components (1)
 |
system |
Type: System Description: System properties |
|---|
Extended by (3)
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BaseModelNonconstantCrossSectionArea Modelica.Fluid.Fittings.BaseClasses.QuadraticTurbulent Generic pressure drop component with constant turbulent loss factor data and without an icon, for non-constant cross section area |
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Modelica.Fluid.Fittings.BaseClasses.QuadraticTurbulent Generic pressure drop component with constant turbulent loss factor data and without an icon |
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Modelica.Fluid.Fittings Simple generic orifice defined by pressure loss coefficient and diameter (only for flow from port_a to port_b) |