文献类型：期刊文献

英文题名：Enhanced Effect of Bubble Deformation on Internal Particle Transport

作者：Pan, Weitong[1];Chen, Xueli[1];Dai, Gance[2];Wang, Fuchen[1]

机构：[1]East China Univ Sci & Technol, Inst Clean Coal Technol, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2020

卷号：59

期号：2

起止页码：905

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20200508107187);WOS:【SCI-EXPANDED(收录号:WOS:000508469500036)】；

基金：This study was supported by the National Natural Science Foundation of China (21761132034 and 21776086).

语种：英文

外文关键词：Deformation - Numerical methods - Transport properties - Particle separators

摘要：Separation of gas-borne particles by a single bubble is the physical basis of bubble scrubbing in industries. In this work, detailed, high-resolution numerical simulations have been performed on the purification process based on a combined volume-of-fluid-discrete phase model (VOF-DPM) method. Formation and rise of a single bubble over a wide range of Reynolds number (850 < Re < 5000) coupled with internal particle transport are studied. Results show that 5-7 mm bubble (1200 < Re < 1600) evidently deforms, and particle collection efficiency eta is rather higher within the range. Emphasis is put on the investigation of the underlying mechanisms contributing to the enhancement of deformation, especially the bubble internal flow patterns and wake behavior. The radial velocity component arises, and hence, the convection mechanism works. The key lies in the synergy between fields of gas velocity and particle concentration, and the synergy angle theta(m) is proposed to interpret.