文献类型：期刊文献

英文题名：Breakup morphology of annular liquid sheet with an inner round air stream

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

机构：[1]E China Univ Sci & Technol, Minist Educ, Key Lab Coal Gasificat & Energy Chem Engn, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, Shanghai 200237, Peoples R China

年份：2015

卷号：137

起止页码：412

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;EI(收录号：20152901047996);WOS:【SCI-EXPANDED(收录号:WOS:000361772400038)】；

基金：This study was supported by the National Natural Science Foundation of China, China (U1402272), Fundamental Research Funds for the Central Universities (WB1314046), and Shanghai Natural Science Foundation, China (15ZR1409500).

语种：英文

外文关键词：Air-blast; Coaxial; Sprays; Atomization; Breakup

摘要：Experiments were performed on the deformation and breakup of annular liquid sheet of nine coaxial twin-fluid air-blast atomizers with water-air systems by using a high speed camera. Due to the morphological difference, the annular sheet breakup could be classified into three regimes, which were bubble (shell) breakup, Christmas tree (cellular) breakup and fiber breakup. The roles of atomizer size and Rayleigh-Taylor instability in the annular sheet breakup were studied. The correlations on the instability wavelength and the size of cellular structure were deduced. The results showed that the dimensionless cellular size was proportional to We(-0.5), which were in good agreement with the experimental results. In order to have an overview of the different breakup mechanisms taking place over the wide range, we suggested categorizing these breakup regimes in a Weber number and dimensionless sheet thickness map. (C) 2015 Elsevier Ltd. All rights reserved.