Work

Comparative Study of Particle-Resolved and Point-Particle Simulations of Particle–Bubble Collisions in Homogeneous Isotropic Turbulence

Year: 2025

Type: article

Abstract: Bubble–particle collisions in turbulent flows are fundamental to flotation processes, yet their complex dynamics remain challenging to characterize accurately. In this study, a comparison study of a particle–bubble collision system in homogeneous isotropic turbulence was performed using the particle-resolved method and point-particle method. Direct numerical simulations of turbulent flows were achieved using the lattice Boltzmann method (LBM). The effects of hydrodynamics on the collision particles were compared between Lagrangian tracking and directly resolving the disturbance flows around finite-size solid particles using an interpolated bounce-back scheme. The differences between point-particle and particle-resolved simulations are evaluated, highlighting their respective strengths and limitations. These findings enhance the understanding of turbulence-driven bubble–particle interactions and provide guidance for improving the accuracy of flotation modeling and process optimization.

Source: Minerals

DOI: 10.3390/min15040338

Authors: Junwen Wang, Jichao Lin, Jianchun Wang, Yongwei Mao, Songying Chen, Guichao Wang

Institutions: Shandong University, China Tobacco

Language: English

Topic: Particle Dynamics in Fluid Flows

Subfield: Ocean Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,896

Funder: National Natural Science Foundation of China