| 横向气流中环状流射流液膜的破碎与雾化 |
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| 作者姓名： | 盛刚浩 张海滨 赵中闯 刘心仕 |
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| 作者单位： | 1.西安交通大学化学工程与技术学院, 西安 710049;2.西安交通大学动力工程多相流国家重点实验室, 西安 710049;3.西安交通大学能源与动力工程学院, 西安 710049 |
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| 基金项目： | 国家自然科学基金（51306146）和中国博士后基金（2013M532045）资助 |
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| 摘 要： | 针对环状流射流液膜在横流中破碎与雾化过程开展实验研究。研究发现，从宏观雾化形态看，环状流射流在横流中可以实现稳定的雾化；实验给出横流作用下环状流射流轨迹无量纲关联式。采用高速摄影技术对横流中环状流射流液膜破碎与雾化瞬态过程进行捕捉，发现环状流射流液膜雾化过程具有周期性和不连续性；不同环状流状态下液膜在横流中雾化机制有较大差异；增大射流表观气速能有效提升雾化效果。
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| 关 键 词： | 环状流射流 横流 破碎与雾化 液膜 |
| 收稿时间： | 2016-04-22 |
| 修稿时间： | 2016-05-28 |
Breakup and atomization of annular flow jet in crossflow |
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| Authors: | SHENG Ganghao ZHANG Haibin ZHAO Zhongchuang LIU Xinshi |
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| Institution: | 1.School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, China;2.State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China;3.School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China |
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| Abstract: | Experimental investigation was carried out on the atomization of the gas-liquid annular flow jet in crossflow. Results show that the liquid film of the annular flow jet realizes steady atomization in crossflow macroscopically. The dimensionless trajectory correlation of the annular flow jet in crossflow is presented based on the captured atomization images. The transient breakup and atomization of the annular flow jet in crossflow was investigated by using high-speed photography techniques. It is found that the transient breakup and atomization processes of annular flow jet are periodic and discontinuous. The mechanisms of the film breakup and atomization were discussed and the influences of different parameters on them were obtained. Results also indicate that the atomization pattern may vary with conditions. Increase in superficial gas velocity improves the atomization effects. |
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| Keywords: | annular flow jet crossflow breakup and atomization liquid film |
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