Development of finite fluctuations in local density, velocity, and temperature for real fluids

Abstract

Analytical expressions for large-scale finite local fluctuations of temperature and collective velocity valid for all states of real fluids are presented. Models for the probability distribution of finite density and temperature fluctuations are proposed. It is demonstrated that a fluctuating fluid consists of two fractions. The basic properties of the fractions are established, and the role of each faction in the makeup of the physical and chemical properties of the fluid is specified. It is shown that the development of large-scale finite fluctuations is not an inherent feature of the critical state: it is characteristic of a wide range of states of real fluids.