Vapor–Liquid Equilibrium

Binary bubble/dew points and isothermal flash with ideal (Raoult) or non-ideal (NRTL / Wilson) liquid activity models.

Activity model

Component 1 (lighter)

Component 2 (heavier)

Mode

Bubble point (P given) Dew point (P given) Isothermal flash (T, P given)

Pressure

Only curated binary pairs have interaction parameters; others are disabled.

Reference data for engineering estimation. Non-ideal models use NRTL / Wilson activity coefficients.