functionbaseFun

Base class for valve characteristics

Extends from Modelica.Icons.Function (Icon for functions).

Information

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

TypeNameDefaultDescription
RealposOpening position (0: closed, 1: fully open)

Outputs

TypeNameDefaultDescription
RealrcRelative flow coefficient (per unit)