Influence of viscoelasticity on liquid primary atomization

被引：0
作者：
Hou, Yanbing [1 ]
Tian, Xiushan [1 ]
Zhao, Hui [1 ]
Li, Weifeng [1 ]
Xu, Jianliang [1 ]
Liu, Haifeng [1 ]
机构：
[1] Key Laboratory of Coal Gasification of Ministry of Education, East China University of Science and Technology, Shanghai Engineering Research Center of Coal Gasification
来源：
Huagong Xuebao/CIESC Journal | 2013年 / 64卷 / 05期
关键词：
Air-blast atomization; Breakup regimes; Instability wavelength; Viscoelasticity;
D O I：
10.3969/j.issn.0438-1157.2013.05.014
中图分类号：
学科分类号：
摘要：
The influence of viscoelasticity on primary atomization of syrup and syrup polymer solutions was studied experimentally with the coaxial air-blast atomizer. The breakup regimes were divided according to high-speed camera graphs and breakup instability characteristics on the surface of liquid jet were performed. The results proved that primary breakup of the experimental medium could be divided into three regimes, non-axisymmetric oscillation, membrane breakup and fiber breakup. However, the breakup transition Weber number of syrup-polymer was larger than that of syrup solution with the same viscosity. The instability wavelength on the surface of liquid was closely related to air velocity and liquid viscoelasticity, the elasticity parameter Wi was introduced in the instability wavelength theory model that considered the influence of vorticity-layer, and a new equation of instability wavelength was fitted with relevant characteristic parameters. © All Rights Reserved.
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页码：1601 / 1606
页数：5
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