AixLib.Media.Refrigerants.Interfaces.PartialHybridTwoPhaseMediumFormula.density_ph_der

# .AixLib.Media.Refrigerants.Interfaces.PartialHybridTwoPhaseMediumFormula.density_ph_der

Calculates time derivative of density_ph

#### Interface

>     function density_ph_der
>       input AbsolutePressure p "Pressure";
>       input SpecificEnthalpy h "Specific Enthalpy";
>       input FixedPhase phase = 0 "2 for two-phase, 1 for one-phase, 0 if not known";
>       input Real der_p "Time derivative of pressure";
>       input Real der_h "Time derivative of specific enthalpy";
>       output Real der_d "Time derivative of density";
>     end density_ph_der;

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