Functions for approximating gas and oil volumes in phase transition region

Koldoba Elena Valentinovna

Functions for approximating gas and oil volumes in phase transition region

Koldoba E. V.

Koldoba Elena Valentinovna

Associate Professor, Lomonosov Moscow State University, Faculty of Mechanics and Mathematics, Chair of Computational Mechanics

Received: 25 Mar 2026

Published: 2025, vol. 29, issue 4, pp. 92–100

Download full text (In Russian)

Abstract

Phase transitions in multicomponent oil solutions are considered. Dependencies for the molar volumes of the gas and liquid phases are proposed. The formulas take into account the behavioral characteristics of solutions, nnamely, changes in concentration during phase transitions. They enable highly accurate approximation of real dependencies and the construction of analytical models with phase transitions over wide ranges of pressures and temperatures.

Keywords: hydrocarbon solutions, phase equilibrium, mathematical modeling, thermodynamics.

BibTeX

@article{IS-Koldoba2025,
  author  = {Koldoba, Elena Valentinovna},
  title   = {{Functions for approximating gas and oil volumes in phase transition region}},
  journal = {Intelligent Systems. Theory and Applications},
  year    = {2025},
  volume  = {29},
  number  = {4},
  pages   = {92--100},
}

AMSBIB

\Bibitem{IS-Koldoba2025}
\by E.\,V.~Koldoba
\paper Functions for approximating gas and oil volumes in phase transition region
\jour Intelligent Systems. Theory and Applications
\yr 2025
\vol 29
\issue 4
\pages 92--100
\lang In Russian

Published under Creative Commons Attribution 4.0 International (CC BY 4.0)

← Back to issue