地沟油生物柴油在旋流喷嘴中的雾化实验及模拟

doi:10.12034/j.issn.1009-606X.219102

过程工程学报 ›› 2019, Vol. 19 ›› Issue (5): 940-948.DOI: 10.12034/j.issn.1009-606X.219102

地沟油生物柴油在旋流喷嘴中的雾化实验及模拟

张逸水¹，王霜^1*，李法社^1,2

1. 昆明理工大学冶金与能源工程学院，云南昆明 650093 2. 省部共建复杂有色金属资源清洁利用国家重点实验室，云南昆明 650093

收稿日期:2018-12-19 修回日期:2019-03-19 出版日期:2019-10-22 发布日期:2019-10-22
通讯作者: 王霜 364766529@qq.com
基金资助:
国家自然科学基金项目

Experiment and simulation of atomization of drainage oil biodiesel in swirl nozzle

Yishui ZHANG¹, Shuang WANG^1*, Fashe LI^1,2

1. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China
2. State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming, Yunnan 650093, China

Received:2018-12-19 Revised:2019-03-19 Online:2019-10-22 Published:2019-10-22

摘要/Abstract

摘要： 对地沟油生物柴油在旋流雾化喷嘴中的内部流场及外部流场进行数值模拟，考察了喷嘴孔径、旋流芯螺距、螺柱槽道横截面积和槽道形状等结构参数对出口雾化速度及索特平均直径的影响，通过实验对模型进行了验证。结果表明，0.7 mm孔径的喷嘴的韦伯数最大，索特平均直径与雾化锥角最优。螺距4 mm的喷嘴雾化特性最优，旋流芯螺距越小，流体在喷嘴内旋流次数越多，阻力损失越大，流体在切向分量上速度越大。梯形槽道的雾化效果最好，相同横截面积下槽道的水力直径越大，雾化效果越好；截面积1 mm2槽道的喷嘴最优，槽道横截面积越小，流体在槽道中的湍流程度越大，流体内部剪切应力越大，液体表面不稳定波急剧增大。

关键词: 地沟油生物柴油, 旋流喷嘴, 雾化特性, 索特平均直径, 雾化速度

Abstract: The internal and external flow fields of drainage oil biodiesel in the swirl atomization nozzle were numerically simulated by changing the nozzle diameter, swirl core pitch, stud groove cross-sectional area, groove shape and other structural parameters, and the atomization velocity and cable average diameter at the outlet were obtained. By comparison, the influence of different parameters on atomization was studied, and the model was verified by experiments. The results showed that the Weber number of 0.7 mm aperture, Sauter mean diameter and atomization cone angle were the best. The atomization characteristics of a nozzle with a screw pitch of 4 mm were optimal. With the decrease of the screw pitch of the swirl core, the time of the fluid swirls in the nozzle, the resistance loss and velocity of the fluid in the tangential component increased. Trapezoidal groove had the best atomization effect. With the increase of the hydraulic diameter of groove shape, the atomization effect was promoted at the same cross-sectional area. The nozzle with the groove cross-section area of 1 mm2 was the best, because the smaller the groove cross-section area was, the greater the turbulence degree of the fluid in the groove, the greater the internal shear stress of the fluid, and the sharp increase of the instability wave on the liquid surface. Comparison of tangential velocity showed that the nozzle with the groove cross-section area of 1 mm2 was optimal.

Key words: trench oil biodiesel, swirl nozzle, atomizing characteristics, average salter diameter, atomizing speed

张逸水王霜李法社. 地沟油生物柴油在旋流喷嘴中的雾化实验及模拟[J]. 过程工程学报, 2019, 19(5): 940-948.

Yishui ZHANG Shuang WANG Fashe LI. Experiment and simulation of atomization of drainage oil biodiesel in swirl nozzle[J]. Chin. J. Process Eng., 2019, 19(5): 940-948.

参考文献

[1] GAO Y, DENG J, LI C, et al. Experimental study of the spray characteristics of biodiesel based on inedible oil[J].Biotechnology Advances,2009,27(5):616-624.
[2] CHOI S, OH Y, A study on spray characteristics of non-esterified biodiesel fuel [J].Science Asia,2011,37(1):174-177.
[3]曹建明. 液体喷雾学[M].北京：机械工业出版社，2005.5：7-8.
CAO Jianming. Liquid Spray Science [M]. Beijing: Mechanical Industry Press, 2005.5:7-8.
[4]王贞涛、王军锋等. 生物柴油滴静电破碎机理与实验研究[J].高电压技术，2013.1，39（1）：139-140.
[5]宋澜波.乙醇混合燃料喷雾特性的研究[D].中国科学技术大学，2018
[6]曹建明．喷雾学研究的国际进展[J]．长安大学学报．2005，25(1)：82．87．
[7]LEWIS H C，EDWARDS D ,GOGLIA M J，MCH R I，SMITH L W.Atomization of liquids in high velocity gas streams [J]．Ind Engr Chem,1948，40(1)：67-74
[8] SIMMONS H C, HARDING C F. Some Efects of Using Water as a Test Fluid in Fuel Nozzle Spray Analysis[C], American Society of Mechanical Engineers, Gas Turbine Conference and Products Show, New Orleans, La., Mar. 10-13, 1980: 80-90.
[9] RIZK N K, CHIN J S. Comprehensive Fuel Nozzle Model[C], AIAA, 1994, 94:321~336.
[10] RIZK N K, CHIN J S, AND RAZDAN M K. Modeling of Gas Turbine Fuel Nozzle Spray[C], ASME Gas Turbine and Aeroengine Congress,1995,1001~1012
[11] SOLTANI M R, GHORBANIAN K, ASHJAEEB M, AND MORAD M R. Spray Characteristics of a Liquid-Liquid Coaxial Swirl Atomizer at Different Mass Flow Rates [C], Aerospace Science and Technology, 2005, 9(7): 592-604
[12]YUE Y, POWELL C F, POOLAR,et al. Quantitative measurements of diesel fuel spray characteristics
in the near-nozzle region using X-ray absorption[J]. Atomization and sprays, 2001, 11(4).
[13] 欧长劲、李燕等.低压旋流喷嘴流场特性的熟知仿真分析[J].轻工机械，2012，30（4）：13-17
[14] 王国辉、蔡体敏.一种旋流式喷嘴的实验与模拟研究[J].推进技术，2003，24（1）：28-32
[15] DATTA A, SOM S K, Numerical prediction of air core diameter,coefficient of discharge and spray come angle of a swirl pressure nozzle [J].International Journal of Heat and Fluid Flow,2000,21(4):412-419.
[16] 张淑荣，尹洪超. 空气雾化燃油喷嘴的喷雾数值模拟[J]. 推进技术，2007，28(3)：14-16
[17]闰云飞，张力，高振宇低压旋流雾化喷嘴内液固两相流动的数值模拟[J].中国电机工程学报，2009，29 (26):63-67.
[18]闰云飞，张力，高振宇.低压旋流雾化喷嘴的雾化性能[J].化工学报，2009,60(5):1141-1147.
[19] 张德良.计算流体力学教程. 北京：高等教育出版社，2015.
[20] 朱克勤，彭杰. 高等流体力学. 北京：科学出版社，2017.
[21] WEBER C. Disintegration of Liquid Jets[J]. Z. Angew. Math. Mech, 1931, 11(2): 136-159.
[22]LUBARSKY, REICHEL AND ZINN. Sprays in Cross Flow Dependence on Weber Number[C], ASME, 2007:1~12
[23] 汪新智.双道气流式雾化喷嘴模拟计算与优化[D].哈尔滨工业大学.2013.7：8-11
[24] 刘志超.直通式旋流细水雾喷嘴雾化理论分析及灭火实验研究[D].西南交通大学.2007.10：57-63

地沟油生物柴油在旋流喷嘴中的雾化实验及模拟

Experiment and simulation of atomization of drainage oil biodiesel in swirl nozzle

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