收稿日期: 2015-03-13
修回日期: 2015-06-01
网络出版日期: 2016-03-15
基金资助
国家自然科学基金(51336006)、陕西省国际科技合作重点项目(2013KW30-05)和中央高校基本科研业务费专项基金资助
Experimental study on characteristics of glycerol/compressed air two-fluid spray
Received date: 2015-03-13
Revised date: 2015-06-01
Online published: 2016-03-15
王锐 , 景青 , 周致富 , 白飞龙 , 陈斌 . 甘油/压缩空气两相喷雾动力学研究[J]. 中国科学院大学学报, 2016 , 33(2) : 223 -227 . DOI: 10.7523/j.issn.2095-6134.2016.02.012
Glycerol spray is widely encountered in daily life and industries. With the assistance of compressed air, the glycerol spray achieves good atomization performance which enhances the utilization efficiency of glycerol. We carried out an experimental study on the characteristics of glycerol/compressed air spray using a concentric two-fluid nozzle. The steady spray pattern was captured by the high-speed camera, and the droplet diameters and velocities were measured by phase Doppler particle analyzer. The experiment results showed that good atomization effects were achieved after the intensive mixing of glycerol droplets and compressed air and the secondary spray under the experiment condition. The spatial distributions of droplet diameters and velocities and their change relations with spray pressure were obtained in the experiments.
Key words： glycerol; compressed air; spray characteristics; droplet dynamics
[1] 刘汝强.KDF2甘油喷雾系统的应用[J].科技创新导报,2012, 26: 86-87.
[2] 李珊瑚,石赞华,刘燕.10%甘油生理盐水喷雾在经鼻蝶入路术后病人口渴护理中的应用[J].护理研究,2012, 26(26): 2 459.
[3] Chen Y C, Starner S H, Masri A R. A detailed experimental investigation of well-defined turbulent evaporating spray jets of acetone[J]. International Journal of Multiphase Flow, 2006, 32: 389-412.
[4] Hoeg D P, Wang Z, Friedman P D, et al. Investigation of a coaxial air-blast atomizer using particle image velocimetry and computational fluid dynamics[J]. Atomization and Sprays, 2008, 18(8): 739-759.
[5] Akafuah N K, Salazar A J, Saito K. Infrared thermography-based visualization of droplet transport in liquid sprays[J]. Infrared Physics and Technology, 2010, 53(3): 218-226.
[6] Guildenbecher D R, Lopez R C, Sojka P E. Secondary atomization[J]. Experiments in Fluids, 2009, 46(3): 371-402.
[7] Pilch M, Erdman C A. Use of breakup time data and velocity history data to predict the maximum size of stable fragments for acceleration-induced breakup of a liquid drop[J]. International Journal of Multiphase Flow, 1987, 13(6): 741-757.
[8] Lasheras J C, Villermaux E, Hopfinger E J. Break-up and atomization of a round water jet by a high-speed annular air jet[J]. J Fluid Mech, 1998, 357: 351-379.
/
| 〈 |
|
〉 |
