Forced thermodynamic consistency for polynomial alpha functions - parameter listing
Forced thermodynamic consistency for polynomial alpha functions - parameter listing
The coefficients presented here were obtained under an enforced thermodynamic consistency limit of 2000 K, ensuring that the Soave and Mathias–Copeman alpha functions maintain physically meaningful derivative behavior throughout the temperature range of interest. This constraint allows the corresponding cubic equations of state to reproduce thermodynamically consistent vapor pressure and enthalpy parameters up to 2000 K, while avoiding instability and error escalation at higher temperatures.
This work was presented at the Regional Symposium on Chemical Engineering (RSCE-2025) held in Makati City, Philippines, on October 29, 2025, where it highlighted the practical implementation of derivative-based consistency in modern cubic equations of state.
Last edited: October 29, 2025