文献类型：期刊文献

英文题名：Transition Weber number between surfactant-laden drop bag breakup and shear breakup of secondary atomization

作者：Zhao, Hui[1,2];Wu, Zhao-Wei[1];Li, Wei-Feng[1];Xu, Jian-Liang[1];Liu, Hai-Feng[1]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, Key Lab Coal Gasificat & Energy Chem Engn, Minist Educ, Shanghai 200237, Peoples R China;[2]Monash Univ, Dept Mech & Aerosp Engn, Lab Turbulence Res Aerosp & Combust, Clayton, Vic 3800, Australia

年份：2018

卷号：221

起止页码：138

外文期刊名：FUEL

收录：;EI(收录号：20180804825101);WOS:【SCI-EXPANDED(收录号:WOS:000429421200014)】；

基金：This research was supported by the National Natural Science Foundation of China (21506059), the Fundamental Research Funds for the Central Universities (222201717004, 222201717018, and 222201717020), Shanghai Natural Science Foundation (15ZR1409500), and the scholarship from China Scholarship Council.

语种：英文

外文关键词：Secondary atomization; Drop breakup; Instability; Surfactant

摘要：Fuel spray and atomization characteristics play an important role in the performance of internal combustion engines and many applications of industry. In drop aerobreakup, there are two main breakup modes: general bag breakup and shear breakup, which are induced by Rayleigh-Taylor instability and Kelvin-Helmholtz instability, respectively. Influence of surfactant on drop deformation and breakup is remarkable. So the transition condition of surfactant-laden drop between general bag breakup and shear breakup will be different from pure liquid. In this work, we investigate the influence of surfactant on drop breakup morphology in a continuous air jet stream, and find the physical mechanism of surfactant-laden drop atomization. Finally the predicted expression of transition Weber number is obtained.