乙醇圆柱射流雾化破碎过程的PIV试验研究

中国机械工程 ›› 2014, Vol. 25 ›› Issue (3): 285-290.

乙醇圆柱射流雾化破碎过程的PIV试验研究

姚春德1;侯亚帮1;贾丽冬1,2;刘军恒1;魏立江1

1.天津大学内燃机燃烧学国家重点实验室，天津，300072
2.洛阳理工学院，洛阳，471023

出版日期:2014-02-10 发布日期:2014-02-07
基金资助:
国家自然科学基金资助项目(51176135)

Study on Ethanol Cylindrical Spray Process and Breakup with PIV Measurements

Yao Chunde1;Hou Yabang1;Jia Lidong1,2;Liu Junheng1;Wei Lijiang1

1.State Key Laboratory of Engines,Tianjin University,Tianjin,300072
2.Luoyang Institute of Science and Technology,Luoyang,Henan,471023

Online:2014-02-10 Published:2014-02-07
Supported by:
National Natural Science Foundation of China（No. 51176135）

摘要/Abstract

摘要：

在喷雾容弹上利用PIV激光测试系统，研究了容弹背压、容弹温度和喷射脉宽对乙醇圆柱射流破碎雾化的影响。试验结果表明：容弹背压升高，乙醇圆柱射流贯穿距离减小，射流锥角变大;温度由20℃变为60℃时，乙醇运动黏度变小，射流贯穿距离增大，射流锥角略有增加;喷射脉宽的改变对乙醇圆柱射流贯穿距离和射流锥角影响很小，然而大脉宽的乙醇射流雾化困难。

关键词: 乙醇, 圆柱射流, 雾化, PIV

Abstract:

The ethanol cylindrical spray process was studied experimentally using PIV in a constant volume vessel. The effects of ambient pressure, ambient temperature and injection pulse width on the ethanol cylindrical spray process were examined. Experimental results show that with increasing ambient pressure, the cylindrical spray penetration length decreases, the spray dispersion angle increases; with temperature rises from 20℃ to 60℃, ethanol kinetic viscosity decreases, the spray penetration length increases, the spray dispersion angle increases slightly. The effects of changing injection pulse width on the cylindrical spray penetration length and cylindrical spray dispersion angle are not noticeable, however the larger injection pulse width makes the cylindrical spray atomization more incomplete.

Key words: ethanol, cylindrical spray, atomization, particle image velocimetry(PIV)

中图分类号:

TK464

姚春德, 侯亚帮, 贾丽冬, 刘军恒, 魏立江. 乙醇圆柱射流雾化破碎过程的PIV试验研究[J]. 中国机械工程, 2014, 25(3): 285-290.

Yao Chunde, Hou Yabang, Jia Lidong, Liu Junheng, Wei Lijiang. Study on Ethanol Cylindrical Spray Process and Breakup with PIV Measurements[J]. China Mechanical Engineering, 2014, 25(3): 285-290.

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