En
期刊文章
文章精选
当期目录
过刊浏览
高被引
高下载
特邀文章
专刊合集
待刊文章
Volume 103
您当前的位置：首页 > 期刊文章 > 过刊浏览 > Volumes 96-107 (2025) > Volume 103
Xu, C., Li, X., Liu, Z., Zhou, D., Wang, Z., Chen, L., . . . Zhao, Y. (2025). A resolved LBM-DEM coupling method for fluid-solid interaction of non-spherical particles based on the super-ellipsoid model. Particuology, 103, 252-266. https://doi.org/10.1016/j.partic.2025.05.023
A resolved LBM-DEM coupling method for fluid-solid interaction of non-spherical particles based on the super-ellipsoid model
Chao Xu a 1, Xiang Li a 1, Zihan Liu a, Du Zhou b, Zhixiong Wang b, Likuan Chen a, Jian Yang a, Lianyong Zhou a, Yongzhi Zhao a *
a College of Energy Engineering, Zhejiang University, Hangzhou, 310027, China
b China Nuclear Power Operations Co., Ltd, Shenzhen, 518000, China
10.1016/j.partic.2025.05.023
Volume 103, August 2025, Pages 252-266
Received 24 January 2025, Revised 24 April 2025, Accepted 26 May 2025, Available online 6 June 2025, Version of Record 14 June 2025.
E-mail: yzzhao@zju.edu.cn
Highlights

• A resolved LBM-DEM coupling method is proposed for non-spherical particles with smooth surfaces.

• A fast algorithm for updating solid volume fraction of super-ellipsoid is proposed.

• Accuracy of the prosed method is validated by results of sedimentation and fluidized bed.

• Impact of particle shape on hydrodynamics of gas-solid fluidized bed is investigated.


Abstract

This paper introduces a resolved coupling method based on the LBM (Lattice Boltzmann Method and DEM (Discrete Element Method) for simulating fluid-particle interactions involving non-spherical particles. The super-ellipsoid model is applied so that a wide range of particle shapes can be represented with high accuracy and efficiency, enabling a detailed investigation of shape effects on flow behavior. The proposed method is validated by comparing simulation results with experimental data on the sedimentation of both spherical and non-spherical particles. Then a fluidized bed system containing different kinds of non-spherical particles is studied and the influence of particle shape on the flow field is investigated. The result further confirms the accuracy and robustness of this method in complex multiphase flow systems. Compared to existing LBM-DEM coupling approaches, this study is more accurate and efficient for simulating flow fields involving particles with smooth surfaces, offering a powerful tool for the study of multiphase systems with regular non-spherical particles.

Graphical abstract
Keywords
Resolved LBM-DEM; Immersed moving boundary; Non-spherical particle; Super-ellipsoid model; Fluidized bed
文章导读