ValveWTwoPhase Method

public double WTwoPhase(
	double Kv,
	double P1,
	double P2,
	double rhog,
	double rhol,
	double k,
	double Pv,
	double Pc,
	double massfrac_gas,
	double massfrac_liq
)

Public Function WTwoPhase ( 
	Kv As Double,
	P1 As Double,
	P2 As Double,
	rhog As Double,
	rhol As Double,
	k As Double,
	Pv As Double,
	Pc As Double,
	massfrac_gas As Double,
	massfrac_liq As Double
) As Double

Parameters

Kv  Double

Effective flow coefficient (m³/h at 1 bar drop).

P1  Double

Inlet pressure in bar.

P2  Double

Outlet pressure in bar.

rhog  Double

Vapour phase density at inlet in kg/m³.

rhol  Double

Liquid phase density at inlet in kg/m³.

k  Double

Ratio of specific heats (Cp/Cv) of the vapour phase.

Pv  Double

Liquid vapour pressure at inlet temperature in bar.

Pc  Double

Mixture critical pressure in bar.

massfrac_gas  Double

Mass fraction of the vapour phase.

massfrac_liq  Double

Mass fraction of the liquid phase.

Return Value

Reference