PartialLumpedFlowBase class for a lumped momentum balance 
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.
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 
pathLength 
Type: Length (m) Description: Length flow path 

system 
Type: System Description: System properties 

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Modelica.Fluid.Fittings.BaseClasses.QuadraticTurbulent Generic pressure drop component with constant turbulent loss factor data and without an icon 

Modelica.Fluid.Fittings Simple generic orifice defined by pressure loss coefficient and diameter (only for flow from port_a to port_b) 