化工学报2012，Vol.63Issue(12)：3927-3936,10.DOI:10.3969/j.issn.0438-1157.2012.12.027
荷尘状态单纤维过滤压降数值计算与分析
Numerical calculation and analysis of pressure drop of a single fiber under dust-loaded conditions
摘要
Abstract
The growth of particle dendrites on a single fiber during fibrous filtration was simulated by the Monte Carlo stochastic simulation and Kuwabara cell model. With the interactions between particles in the dendrites considered,the drag force contribution from each individual particle was calculated and analyzed. The results indicate that two steps may be distinguished in evolution of the pressure drop with deposit aspect for all filtration conditions studied. The variation of pressure drop is strongly depended upon filtration velocity,particle size and particle dendrite structure. However,in the range of fiber diameter concerned,there is no influence on the evolution of pressure drop. A new theoretical model for estimation of the pressure drop across the fibrous filter during clogging was developed with the understanding of the evolution of pressure drop for a dust-loaded fiber with deposit aspect. The model test shows that the calculated values are in good agreement with the experimental data for the filtration velocity from 0. 01 m · s-1 to 0. 3 m · s-1. It can be used for the prediction of pressure drop during fibrous filter clogging.关键词
纤维过滤/粉尘树枝/过滤压降/单纤维/捕集Key words
fibrous filtration/particle dendrite/pressure drop/single fiber/collection分类
化学化工引用本文复制引用
朱辉,付海明,亢燕铭..荷尘状态单纤维过滤压降数值计算与分析[J].化工学报,2012,63(12):3927-3936,10.基金项目
国家自然科学基金项目(51178094). （51178094）
