化工学报2026，Vol.77Issue(7)：3712-3729,18.DOI:10.11949/0438-1157.20251378
气固系统中颗粒包覆均匀性数值模拟研究进展
Research progress in numerical simulation of particle coating uniformity in gas-solid systems
摘要
Abstract
The particle coating process plays a significant role in various industrial applications,including drug preparation,functional particle preparation,and nuclear fuel particle preparation.The uniformity of particle coating is the primary objective in optimizing the coating process and a key indicator of the maturity of the coating technology.It generally involves two main aspects:inter-particle coating uniformity and intra-particle coating uniformity.Both aspects have been extensively studied in the literature through experimental and simulation research.This review provides a detailed overview of numerical simulation methods for particle coating uniformity,analyzes their development trajectory and underlying mechanisms,and offers insights into future development directions.In terms of inter-particle coating uniformity,four methods are developed:statistical models based on residence time distribution,random deposition models described by the Monte Carlo method,the CFD-DEM framework coupling fluid dynamics and particle motion,and high-fidelity models involving multi-mechanism coupling.These methods aim to comprehensively reveal the effects of precursor material distribution,mixing characteristics,and particle dynamics on coating uniformity.In numerical simulations of intraparticle coating homogeneity,four main types have been identified:surface discretization models,continuous field models,spherical harmonic function models,and particle-bound heterogeneous coating models.Their advantages and disadvantages have been compared and analyzed.Intra-particle coating uniformity is a critical factor in determining overall coating quality precisely.Current research focuses on experimental studies predominantly,while mathematical modeling and mechanistic understanding remain underdeveloped.Future advancements in numerical simulations of coating uniformity should aim to balance computation precision and complexity,establishing a multi-scale coupled framework that integrates computational feasibility with physical fidelity,thereby providing more efficient support for coating process optimization and mechanism elucidation.关键词
颗粒包覆/数值模拟/颗粒间均匀性/颗粒内均匀性/气固系统/流体力学/模型Key words
particle coating/numerical simulation/inter-particle coating uniformity/intra-particle coating uniformity/gas-solid systems/fluid mechanics/model分类
化学化工引用本文复制引用
兰蕊,田宇,刘荣正,杨旭,刘兵,邵友林,刘马林..气固系统中颗粒包覆均匀性数值模拟研究进展[J].化工学报,2026,77(7):3712-3729,18.基金项目
国家自然科学基金项目(22478220) （22478220）
国家高层次人才计划(青年项目)(20224723061) （青年项目）
