Research progress on simulation of multiscale mass transfer processes in gas-solid system by computational mass transfer

• Published in: Particuology Vol. 90; pp. 478 - 492
• Main Authors: Li, Xu, Wang, Yaohui, Li, Leifu, Zhang, Runye, Ren, Hailun, Li, Wenbin, Tang, Zhongli, Zhang, Donghui
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-07-2024
• Subjects: Anisotropy; Computational mass transfer; Fixed bed; Fluidized bed; Multiscale; Turbulent mass diffusion; Computational mass transfer; Turbulent mass diffusion; Anisotropy; Fixed bed; Multiscale; Fluidized bed
• ISSN: 1674-2001; 2210-4291
• DOI: 10.1016/j.partic.2024.01.009

Particle-fluid system is one of the most popular systems in chemical processes. Owing to complex interface structure and high-velocity turbulence, the momentum and mass transfer exhibit nonlinear characteristics, which pose a great challenge for further study and application. To solve this problem, computational mass transfer (CMT) emerged and has been proved to be effective in deeply exploring the mass transfer behavior of particle-fluid systems. First, this paper reviews recent gas-solid numerical studies of turbulence issues from empirical to theoretical, then discusses interphase mass transfer rate models and the interfacial interaction force. Second, the present study particularly reviews researches on mass transfer process of fixed and fluidized regime by CMT, providing reliable analysis of turbulent anisotropy diffusivity as well as multiscale structure and presenting theoretical instruction for the industrial optimization of mass transfer processes in chemical engineering.
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•Anisotropy of turbulent mass diffusion in various particle-fluid systems are characterized.•Newly developed multiscale models for the interphase mass transfer are reviewed.•Significant influences of turbulent mass diffusion on mass transfer processes are found.•Some future directions for developing computational mass transfer based model are pointed out.