| 加热条件下柴油喷雾射流不稳定性分析和实验 |
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| 引用本文： | 何勇灵,史绍熙,郗大光,刘宁,秦建荣,杜青. 加热条件下柴油喷雾射流不稳定性分析和实验[J]. 河南科技大学学报(自然科学版), 1999, 20(4): 41-44 |
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| 作者姓名： | 何勇灵 史绍熙 郗大光 刘宁 秦建荣 杜青 |
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| 作者单位： | 1. 洛阳工学院汽车工程系，河南 洛阳，471039
2. 天津大学内燃机燃烧学国家重点实验室，天津，300072 |
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| 基金项目： | 国家“八五”攀登计划项目，99年度河南省杰出青年基金 |
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| 摘 要： | 就温度对柴油喷雾射流表面扰动波增长率的影响进行了理论分析和实验研究。研究结果表明，在加热条件下，燃油的表面张力和粘性下降，引起韦伯数Ｗｅ的减少和雷诺数Ｒｅ的增大，结果导致喷雾射流扰动波的增长。环境介质温度愈高，喷雾射流表面温度就愈高，扰动波的增长率就越大，喷雾就越容易破碎和雾化，这与实验观察结果相符合。
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| 关 键 词： | 柴油机 柴油 稳定性 加热 射流 |
| 文章编号： | 1000-5080(1999)04-0041-04 |
| 修稿时间： | 1999-05-26 |
Analysis and Experinent of Instability of Diesel Spray Jet Under Heating Condition |
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| HE Yongling, SHI Shaoxi, XI Daguang, LIU Ning, QIN Jianrong, DU Qing. Analysis and Experinent of Instability of Diesel Spray Jet Under Heating Condition[J]. Journal of Henan University of Science & Technology:Natural Science, 1999, 20(4): 41-44 |
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| Authors: | HE Yongling SHI Shaoxi XI Daguang LIU Ning QIN Jianrong DU Qing |
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| Abstract: | The theoretical study and experimental investigation of the effect of temperature on groWth of disturbancesof surface of diesel jet are made. It is demonstrated that when temperature is increased, the surface tension andviscosity are reduced. This leads to the reduction of Weber number (We ) and increase in Reynolds number (Re ),and finally resulting in an increase in the growth rate of disturbance wave. The higher is the temperature of gasmedium, the higher is the groW-th rate of the disturbance wave. This made the jet breakup and atondzation moreeasily. The results Of the theory agree finely with results of experiment. |
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| Keywords: | Diesel engine Diesel oil Stability Heating Jets |
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