黏弹性对液体初次雾化特性的影响

doi:10.3969/j.issn.0438-1157.2013.05.014

化工学报 ›› 2013, Vol. 64 ›› Issue (5): 1601-1606.DOI: 10.3969/j.issn.0438-1157.2013.05.014

黏弹性对液体初次雾化特性的影响

侯妍冰, 田秀山, 赵辉, 李伟锋, 许建良, 刘海峰

华东理工大学煤气化教育部重点实验室, 上海煤气化工程技术研究中心, 上海 200237

收稿日期:2012-08-27 修回日期:2012-11-06 出版日期:2013-05-05 发布日期:2013-05-05
通讯作者: 刘海峰
作者简介:侯妍冰(1987-),女,硕士研究生。
基金资助:
国家重点基础研究发展计划项目(2010CB227005);国家自然科学基金项目(21176079)。

Influence of viscoelasticity on liquid primary atomization

HOU Yanbing, TIAN Xiushan, ZHAO Hui, LI Weifeng, XU Jianliang, LIU Haifeng

Key Laboratory of Coal Gasification of Ministry of Education, East China University of Science and Technology, Shanghai Engineering Research Center of Coal Gasification, Shanghai 200237, China

Received:2012-08-27 Revised:2012-11-06 Online:2013-05-05 Published:2013-05-05
Supported by:
supported by the National Basic Research Program of China(2010CB227005)and the National Natural Science Foundation of China(21176079).

摘要/Abstract

摘要： 以糖浆溶液和糖浆聚合物溶液为液相介质、空气为气相介质,采用同轴双通道气流式雾化喷嘴研究黏弹性对液体初次雾化特性的影响,根据高速摄像拍摄的图片对雾化模式进行研究,并重点探讨了液柱表面的不稳定特性。研究结果表明,两种液相介质的初次雾化可分为非轴对称振荡模式、膜破裂模式和拉丝破裂模式,糖浆聚合物溶液各个破裂模式的边界Weber数大于同等黏度的糖浆溶液。液体表面的不稳定波长与气速及液体自身的黏弹性密切相关,在考虑边界层影响的不稳定波长理论模型的基础上引入弹性参数Wi,并通过数据拟合得到新的不稳定波长关系式。

关键词: 黏弹性, 气流式雾化, 破裂模式, 不稳定波长

Abstract: 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.

Key words: viscoelasticity, air-blast atomization, breakup regimes, instability wavelength

中图分类号:

TQ022.4

侯妍冰, 田秀山, 赵辉, 李伟锋, 许建良, 刘海峰. 黏弹性对液体初次雾化特性的影响[J]. 化工学报, 2013, 64(5): 1601-1606.

HOU Yanbing, TIAN Xiushan, ZHAO Hui, LI Weifeng, XU Jianliang, LIU Haifeng. Influence of viscoelasticity on liquid primary atomization[J]. CIESC Journal, 2013, 64(5): 1601-1606.

参考文献 17

[1]	Gorokhovski M, Herrmann M.Modeling primary atomization[J].Annu. Rev. Fluid Mech., 2008, 40:343-366
[2]	Dumouchel C.On the experimental investigation on primary atomization of liquid streams[J].Experiments in Fluids, 2008, 45(3):371-422
[3]	Jiang X, Siamas G, Jagus K, et al.Physical modelling and advanced simulations of gas-liquid two-phase jet flows in atomization and sprays[J].Progress in Energy and Combustion Science, 2010, 36(2):131-167
[4]	Cao Xiankui(曹显奎), Xu Jianliang(许建良), Li Weifeng(李伟锋), et al.Primary atomization of coaxial two-channel air-blast atomizer[J].Journal of Chemical Industry and Engineering(China)(化工学报), 2007, 57(11):2591-2596
[5]	Guildenbecher D, López-Rivera C,Sojka P.Secondary atomization[J].Experiments in Fluids, 2009, 46(3):371-402
[6]	Theofanous T.Aerobreakup of Newtonian and viscoelastic liquids[J].Annual Review of Fluid Mechanics, 2011, 43:661-690
[7]	Thompson J C,Rothstein J P.The atomization of viscoelastic fluids in flat-fan and hollow-cone spray nozzles[J].Journal of Non-Newtonian Fluid Mechanics, 2007, 147:11-22
[8]	Ruo A N C, Chen F, Chung C A N G, et al.Three-dimensional response of unrelaxed tension to instability of viscoelastic jets[J].Journal of Fluid Mechanics, 2011, 682(1):558-576
[9]	Jung S, Hoath S D, Martin G D, et al.Experimental study of atomization patterns produced by the oblique collision of two viscoelastic liquid jets[J].Journal of Non-Newtonian Fluid Mechanics, 2011, 166(5):297-306
[10]	Hoyt J W,Taylor J.Waves on water jets[J].Journal of Fluid Mechanics, 1977, 83(1):119-127
[11]	Eroglu H,Chigier N.Wave characteristics of liquid jets from airblast coaxial atomizers[J].Atomization and Sprays, 1991, 1(4):349-366
[12]	Marmottant P,Villermaux E.On spray formation[J].Journal of Fluid Mechanics, 2004, 498(1):73-111
[13]	Mun R P, Byars J A,Boger D V.The effects of polymer concentration and molecular weight on the breakup of laminar capillary jets[J].Journal of Non-Newtonian Fluid Mechanics, 1998, 74(1/2/3):285-297
[14]	Zhao H, Liu H F, Xu J L, et al.Breakup and atomization of a round coal water slurry jet by an annular air jet[J].Chemical Engineering Science, 2012, 78:63-74
[15]	López-Rivera C, Sojka P.Secondary breakup of non-Newtonian liquid drops//Triennial International Annual Conference on Liquid Atomization and Spray Systems[C].Colorado USA, 2009
[16]	Baillot F, Blaisot J B, Boisdron G, et al.Behaviour of an air-assisted jet submitted to a transverse high-frequency acoustic field[J].Journal of Fluid Mechanics, 2009, 640(1):305-342
[17]	Eggers J,Fontelos M A.Isolated inertialess drops cannot break up[J].Journal of Fluid Mechanics, 2005, 530:177-180

黏弹性对液体初次雾化特性的影响

Influence of viscoelasticity on liquid primary atomization

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