A lattice Boltzmann study of phase separation in liquid-vapor systems with gravity

TL;DR

This paper uses lattice Boltzmann simulations to study how gravity affects phase separation in a 2D liquid-vapor system, revealing a growth exponent of 1 along the gravitational direction.

Contribution

It introduces a lattice Boltzmann approach with finite difference scheme to analyze gravity-driven phase separation in liquid-vapor systems.

Findings

Growth exponent α=1 along gravity direction

Gravity influences phase separation dynamics

Lattice Boltzmann method effectively models gravitational effects

Abstract

Phase separation of a two-dimensional van der Waals fluid subject to a gravitational force is studied by numerical simulations based on lattice Boltzmann methods (LBM) implemented with a finite difference scheme. A growth exponent $\alpha=1$ is measured in the direction of the external force.