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WOLFRAM SYSTEM MODELER

baseFun

Base class for valve characteristics

Wolfram Language

In[1]:=

SystemModel["Modelica.Fluid.Valves.BaseClasses.ValveCharacteristics.baseFun"]

Out[1]:=

Information

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

This is a partial function that defines the interface of valve characteristics. The function returns "rc = valveCharacteristic" as function of the opening "pos" (in the range 0..1):

    dp = (zeta_TOT/2) * rho * velocity^2
m_flow =    sqrt(2/zeta_TOT) * Av * sqrt(rho * dp)
m_flow = valveCharacteristic * Av * sqrt(rho * dp)
m_flow =                  rc * Av * sqrt(rho * dp)

Inputs (1)

pos	Type: Real Description: Opening position (0: closed, 1: fully open)

Outputs (1)

rc	Type: Real Description: Relative flow coefficient (per unit)

Extended by (4)

	equalPercentage Modelica.Fluid.Valves.BaseClasses.ValveCharacteristics Equal percentage characteristic
	quadratic Modelica.Fluid.Valves.BaseClasses.ValveCharacteristics Quadratic characteristic
	one Modelica.Fluid.Valves.BaseClasses.ValveCharacteristics Constant characteristic
	linear Modelica.Fluid.Valves.BaseClasses.ValveCharacteristics Linear characteristic