Phenomenological Scale Factors for the Liquid-Vapor Critical Transition of Pure Fluids

TL;DR

This paper presents a phenomenological approach to determine the critical behavior of pure fluids at the liquid-vapor transition using experimental data on critical points and tangent planes.

Contribution

It introduces a method to extract singular asymptotic behaviors of pure fluids at critical points from limited experimental data.

Findings

Method successfully characterizes critical behavior from experimental measurements.

Provides a practical tool for analyzing fluid phase transitions.

Enhances understanding of liquid-vapor critical phenomena.

Abstract

We discuss a phenomenological method which allows to determine the singular asymptotic behaviours for a pure fluid at equilibrium, when the liquid-gas critical point and the tangent plane to the characteristic surface of this point are localized experimentally, in the pressure, density and temperature coordinates.