A distribution function correction-based immersed boundary Lattice Boltzmann method for gas-liquid-solid multiphase flows

IF 4 2区工程技术 Q1 ENGINEERING, MECHANICAL

Acta Mechanica Sinica Pub Date : 2026-07-11 DOI:10.1007/s10409-026-25818-x

Mufeng Chen (, ), Xiaodong Niu (, ), Peng Yu (, ), Jingfeng Ye (, ), Kangyang Zeng (, ), Jiaqing Li (, ), Xiang Li (, )

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引用次数: 0

Abstract

This study proposes an enhanced immersed boundary-lattice Boltzmann method (IB-LBM) incorporating distribution function correction for gas-liquid-solid multiphase flow simulations. The methodology characterizes the fluid-solid interactions disturbing the surrounding fluid through non-equilibrium distribution function analysis within the IB-LBM framework. A phase-field approach coupled with the conservative Allen-Cahn equation governs gas-liquid interface evolution, while an integrated scheme combining weighted capillary force calculation and diffused interface immersion boundary treatment addresses dynamic wetting phenomena at moving contact lines. Validation through four typical benchmark simulations, i.e., (1) a droplet spreading on a cylinder, (2) particle wetting behavior at a gas-liquid interface, (3) a circular cylinder submersion through an air-water interface, and (4) interfacial self-assembly of a triple-particle system, demonstrates the method’s reliability. Then, a systematic study of a particle that falls and collides with another particle at the air-water interface is conducted to investigate further the phase-significant deformation phenomenon accompanied by complex particle interaction in multiphase flow. Numerical simulations confirm the method’s capability to accurately model multiphase systems with multiple particles while maintaining mass conservation principles.

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基于分布函数校正的气液固多相流浸入边界点阵玻尔兹曼方法

针对气液固多相流模拟，提出了一种包含分布函数校正的增强浸入式边界晶格玻尔兹曼方法（IB-LBM）。该方法通过在IB-LBM框架内的非平衡分布函数分析来表征干扰周围流体的流固相互作用。相场法结合保守的Allen-Cahn方程控制气液界面演化，而结合加权毛细力计算和扩散界面浸没边界处理的集成方案解决了移动接触线上的动态润湿现象。通过四个典型的基准模拟(1)液滴在圆柱体上的扩散，(2)颗粒在气液界面上的润湿行为，（3)圆柱体通过空气-水界面的浸没，以及(4)三颗粒系统的界面自组装）验证了该方法的可靠性。然后，系统地研究了一个粒子在空气-水界面与另一个粒子的坠落和碰撞，进一步研究了多相流中伴随复杂粒子相互作用的相位显著变形现象。数值模拟证实了该方法在保持质量守恒原理的同时能够准确地模拟具有多个粒子的多相系统。

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来源期刊

Acta Mechanica Sinica 物理-工程：机械

CiteScore

5.60

自引率

20.00%

发文量

1807

审稿时长

4 months

期刊介绍： Acta Mechanica Sinica, sponsored by the Chinese Society of Theoretical and Applied Mechanics, promotes scientific exchanges and collaboration among Chinese scientists in China and abroad. It features high quality, original papers in all aspects of mechanics and mechanical sciences. Not only does the journal explore the classical subdivisions of theoretical and applied mechanics such as solid and fluid mechanics, it also explores recently emerging areas such as biomechanics and nanomechanics. In addition, the journal investigates analytical, computational, and experimental progresses in all areas of mechanics. Lastly, it encourages research in interdisciplinary subjects, serving as a bridge between mechanics and other branches of engineering and the sciences. In addition to research papers, Acta Mechanica Sinica publishes reviews, notes, experimental techniques, scientific events, and other special topics of interest. Related subjects » Classical Continuum Physics - Computational Intelligence and Complexity - Mechanics