modelFluidInterface

Partial class for fluid interface that can be coupled to BCVTB

Information

This is a partial model that is used to construct models for interfacing fluid flow systems with the BCVTB interface.

Type	Name	Default	Description
Integer	nPorts	0	Number of ports
Boolean	use_m_flow_in	false	Get the mass flow rate from the input connector
Modelica.Units.SI.MassFlowRate	m_flow	0	Fixed mass flow rate going out of the fluid port
Nominal condition
Modelica.Units.SI.MassFlowRate	m_flow_nominal		Nominal mass flow rate, used for regularization near zero flow
Advanced
Modelica.Units.SI.MassFlowRate	m_flow_small	1E-4*m_flow_nominal	For bi-directional flow, temperature is regularized in the region \|m_flow\| < m_flow_small (m_flow_small > 0 required)

Type	Name	Description
Modelica.Blocks.Interfaces.RealInput	m_flow_in	Prescribed mass flow rate
Modelica.Blocks.Interfaces.RealInput	T_in	Prescribed boundary temperature
Modelica.Fluid.Interfaces.FluidPorts_b[nPorts]	ports
Modelica.Blocks.Interfaces.RealOutput	HSen_flow	Sensible enthalpy flow rate, positive if flow into the component

Type	Name	Description
Buildings.Fluid.Sensors.EnthalpyFlowRate[nPorts]	totEntFloRat	Total enthalpy flow rate (sensible plus latent)
Modelica.Blocks.Math.Sum	sumHTot_flow	Sum of total enthalpy flow rates
Buildings.Fluid.Sources.MassFlowSource_T	bou

Name	Description
Medium	Medium model within the source

May 21, 2026, by Michael Wetter:
Removed protected parameter flowDirection as it was set to Birectional and had no effect on the model.
This is for Buildings, #4607.
May 27, 2016, by Michael Wetter:
Refactored mass flow rate assignment to avoid using conditional connector in a variable assignment.
May 30, 2014, by Michael Wetter:
Removed undesirable annotation Evaluate=true.
April 5, 2011, by Michael Wetter:
Added nominal values that are needed by the sensor.
September 11, 2009, by Michael Wetter:
First implementation.