LBfoam: An open-source software package for the simulation of foaming using the Lattice Boltzmann Method

This paper presents a 2D/3D Free Surface Lattice Boltzmann Method simulation package called LBfoam for the simulation of foaming processes. The model incorporates the essential physics of foaming phenomena: gas diffusion into nucleated bubbles, bubble dynamics and coalescence, surface tension, the stabilizing disjoining pressure between bubbles, and Newtonian and non-Newtonian rheological models. The software can simulate the growth and interaction of bubbles, and predict final foam structures. The implementation is based on the Palabos library (in C++), which enables large-scale parallel simulations. The software is freely available under the GNU Affero General Public License version 3.

本文提出了一款名为LBfoam的二维/三维自由面格子玻尔兹曼方法（Free Surface Lattice Boltzmann Method）仿真软件包，用于发泡过程的数值模拟。该模型涵盖了发泡现象的核心物理机制：气体向已成核气泡的扩散、气泡动力学与聚并行为、表面张力、气泡间的稳定分离压力，以及牛顿与非牛顿流变模型。本软件可模拟气泡的生长与相互作用过程，并预测最终的泡沫结构。其开发基于C++语言的Palabos库，支持大规模并行仿真。该软件可免费获取，采用GNU Affero通用公共许可证第3版（GNU Affero General Public License version 3）许可协议发布。