Discrete Boltzmann modeling of liquid-vapor system

TL;DR

This paper explores the Discrete Boltzmann Model's ability to analyze thermodynamic nonequilibrium effects in liquid-vapor systems, aiming to enhance macroscopic modeling of complex two-phase flows.

Contribution

It demonstrates how DBM can effectively analyze both mechanical and thermodynamic nonequilibrium effects, especially focusing on TNE in liquid-vapor systems.

Findings

DBM can analyze TNE effects in liquid-vapor systems.

Results can confirm and improve macroscopic models.

DBM provides detailed insights into nonequilibrium phenomena.

Abstract

We further probe the Discrete Boltzmann Modeling(DBM) of the single-component two phase flows or the liquid-vapor system. There are two kinds of nonequilibrium effects in the system. The first is the Mechanical NonEquilibrium(MNE). The second is the Thermodynamic NonEquilibrium(TNE). The MNE is well described in the traditional fluid dynamic theory. The description of TNE resorts to the gas kinetic theory. Since based on the Boltzmann equation, the DBM makes possible to analyze both the MNE and TNE. The TNE is the main discussion of this work. A major purpose of this work is to show that the DBM results can be used to confirm and/or improve the macroscopic modeling of complex system.