Modelica.Thermal.FluidHeatFlow.Interfaces.Partials

Partial models

Information

Extends from Modelica.Icons.Package (Icon for standard packages).

Package Content

Name	Description
SimpleFriction	Simple friction model
TwoPort	Partial model of two port
Ambient	Partial model of ambient
AbsoluteSensor	Partial model of absolute sensor
RelativeSensor	Partial model of relative sensor
FlowSensor	Partial model of flow sensor

Modelica.Thermal.FluidHeatFlow.Interfaces.Partials.SimpleFriction

Simple friction model

Information

Definition of relationship between pressure drop and volume flow rate:
-V_flowLaminar < VolumeFlow < +V_flowLaminar: laminar i.e., linear dependency of pressure drop on volume flow.
-V_flowLaminar > VolumeFlow or VolumeFlow < +V_flowLaminar: turbulent i.e., quadratic dependency of pressure drop on volume flow.
Linear and quadratic dependency are coupled smoothly at V_flowLaminar / dpLaminar.
Quadratic dependency is defined by nominal volume flow and pressure drop (V_flowNominal / dpNominal).
See also sketch at diagram layer.

Parameters

Name	Description
Simple Friction
V_flowLaminar	Laminar volume flow [m3/s]
dpLaminar	Laminar pressure drop [Pa]
V_flowNominal	Nominal volume flow [m3/s]
dpNominal	Nominal pressure drop [Pa]
frictionLoss	Part of friction losses fed to medium

Modelica.Thermal.FluidHeatFlow.Interfaces.Partials.TwoPort

Partial model of two port

Information

Partial model with two flowPorts.
Possible heat exchange with the ambient is defined by Q_flow; setting this = 0 means no energy exchange.
Setting parameter m (mass of medium within pipe) to zero leads to neglection of temperature transient cv*m*der(T).
Mixing rule is applied.
Parameter 0 < tapT < 1 defines temperature of heatPort between medium's inlet and outlet temperature.

Parameters

Name	Description
medium	Medium in the component
m	Mass of medium [kg]
T0	Initial temperature of medium [K]
T0fixed	Initial temperature guess value or fixed
tapT	Defines temperature of heatPort between inlet and outlet temperature

Connectors

Name	Description
flowPort_a
flowPort_b

Modelica.Thermal.FluidHeatFlow.Interfaces.Partials.Ambient

Partial model of ambient

Information

Partial model of (Infinite) ambient, defines pressure and temperature.

Parameters

Name	Description
medium	Ambient medium

Connectors

Name	Description
flowPort

Modelica.Thermal.FluidHeatFlow.Interfaces.Partials.AbsoluteSensor

Partial model of absolute sensor

Information

Partial model for an absolute sensor (pressure/temperature).
Pressure, mass flow, temperature and enthalpy flow of medium are not affected.

Extends from Modelica.Icons.RotationalSensor (Icon representing a round measurement device).

Parameters

Name	Description
medium	Sensor's medium

Connectors

Name	Description
flowPort
y

Modelica.Thermal.FluidHeatFlow.Interfaces.Partials.RelativeSensor

Partial model of relative sensor

Information

Partial model for a relative sensor (pressure drop/temperature difference).
Pressure, mass flow, temperature and enthalpy flow of medium are not affected.

Extends from Modelica.Icons.RotationalSensor (Icon representing a round measurement device).

Parameters

Name	Description
medium	Sensor's medium

Connectors

Name	Description
flowPort_a
flowPort_b
y

Modelica.Thermal.FluidHeatFlow.Interfaces.Partials.FlowSensor

Partial model of flow sensor

Information

Partial model for a flow sensor (mass flow/heat flow).
Pressure, mass flow, temperature and enthalpy flow of medium are not affected, but mixing rule is applied.

Extends from Modelica.Icons.RotationalSensor (Icon representing a round measurement device), TwoPort (Partial model of two port).

Parameters

Name	Description
medium	Medium in the component
m	Mass of medium [kg]
T0	Initial temperature of medium [K]
T0fixed	Initial temperature guess value or fixed
tapT	Defines temperature of heatPort between inlet and outlet temperature

Connectors

Name	Description
flowPort_a
flowPort_b
y

Automatically generated Tue Apr 05 09:37:03 2016.