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WOLFRAM SYSTEM MODELER

Pipe

Pipe with optional heat exchange

Wolfram Language

In[1]:=

SystemModel["Modelica.Thermal.FluidHeatFlow.Components.Pipe"]

Out[1]:=

This information is part of the Modelica Standard Library maintained by the Modelica Association.

Pipe with optional heat exchange.

Thermodynamic equations are defined by BaseClasses.TwoPort. Q_flow is defined by heatPort.Q_flow (useHeatPort=true) or zero (useHeatPort=false).

Note: Setting parameter m (mass of medium within pipe) to zero leads to neglect of temperature transient cv*m*der(T).

Note: Injecting heat into a pipe with zero mass flow causes temperature rise defined by storing heat in medium's mass.

medium	Value: FluidHeatFlow.Media.Medium() Type: Medium Description: Medium in the component
m	Value: Type: Mass (kg) Description: Mass of medium
T0	Value: Type: Temperature (K) Description: Initial temperature of medium
T0fixed	Value: false Type: Boolean Description: Initial temperature guess value or fixed
tapT	Value: 1 Type: Real Description: Defines temperature of heatPort between inlet and outlet temperature
V_flowLaminar	Value: Type: VolumeFlowRate (m³/s) Description: Laminar volume flow
dpLaminar	Value: Type: Pressure (Pa) Description: Laminar pressure drop
V_flowNominal	Value: Type: VolumeFlowRate (m³/s) Description: Nominal volume flow
dpNominal	Value: Type: Pressure (Pa) Description: Nominal pressure drop
frictionLoss	Value: 0 Type: Real Description: Part of friction losses fed to medium
useHeatPort	Value: false Type: Boolean Description: = true, if HeatPort is enabled
h_g	Value: Type: Length (m) Description: Geodetic height (height difference from flowPort_a to flowPort_b)
g	Value: Modelica.Constants.g_n Type: Acceleration (m/s²) Description: Gravitation

T	Type: Temperature (K) Description: Outlet temperature of medium
T_a	Type: Temperature (K) Description: Temperature at flowPort_a
T_b	Type: Temperature (K) Description: Temperature at flowPort_b
dT	Type: TemperatureDifference (K) Description: Temperature increase of coolant in flow direction

	flowPort_a	Type: FlowPort_a Description: Filled flow port (used upstream)
	flowPort_b	Type: FlowPort_b Description: Hollow flow port (used downstream)
	heatPort	Type: HeatPort_a Description: Thermal port for 1-dim. heat transfer (filled rectangular icon)

flowPort_a

Description: Filled flow port (used upstream)

flowPort_b

Description: Hollow flow port (used downstream)

heatPort

Description: Thermal port for 1-dim. heat transfer (filled rectangular icon)

	medium	Type: Medium Description: Medium in the component

medium

Description: Medium in the component

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