文献类型：期刊文献

英文题名：Mechanism of submicron particle dendrite agglomeration growth and fracture in flow-electric coupling field

作者：Tao, Shanlong[1];Zhu, Yong[2];Chen, Mingxia[1];Jiang, Zhi[1];Shangguan, Wenfeng[1]

机构：[1]Shanghai Jiao Tong Univ, Res Ctr Combust & Environm Technol, Sch Mech Engn, Shanghai 200240, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2024

卷号：296

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;EI(收录号：20242016089419);WOS:【SCI-EXPANDED(收录号:WOS:001325672500001)】；

基金：This work was supported by the National Natural Science Foundation of China (Nos. 52200130, 22176123) , and Postdoctoral Science Foun-dation of China (No. 2022M722082) .

语种：英文

外文关键词：Electrostatic field; Dipole moment; Submicron particle; Agglomerate; Growth dynamics; Greek letters

摘要：The research developed a new mechanism for particle agglomeration growth and fracture in the flow-electric coupling field. Microscopic visualization experiments reveal an optimum voltage range for controlling agglomerate growth dynamics. Additionally, we observed, for the first time, twisting behaviors of particle agglomerates during the growth and fracture process under the influence of the flow-electric field. A correlation between twist and fracture, varying with the increase in applied voltage, was identified. Moreover, we identified two distinct agglomeration modes: dendritic and chain agglomerates, each exhibiting unique growth characteristics. We discovered that the growth, twisting, and fracture of inclined dendritic agglomerates are influenced by two components of the electric dipole moment: the axial (Pg) P g ) and radial (Pt) P t ) components, with the aid of numerical simulation. Chain-like agglomerates exhibit growth followed by fracture. Our findings offer insights into the controlled growth of submicron particle agglomerates in gas phases using electric fields.