| 喷嘴内空穴现象对柴油机喷雾特性的影响 |
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| 引用本文： | 付振,李伟权,许沧粟.喷嘴内空穴现象对柴油机喷雾特性的影响[J].农机化研究,2009,31(3). |
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| 作者姓名： | 付振 李伟权 许沧粟 |
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| 作者单位： | 1. 浙江大学,动力机械与车辆工程研究所,杭州,310027
2. 浙江省质量技术监督局,杭州,310012 |
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| 摘 要： | 基于Nurick的一维模型对柴油机喷嘴内空穴现象的产生进行了描述并运用不可压缩流体的伯努利方程对喷嘴内流体进行了理论分析.研究表明,空穴数是影响空穴最为重要的参数,雷诺数与空穴无关,任何影响空穴数的因素也就意味着影响空穴.空穴现象对喷孔内部液流特性有着很大的影响,随着空穴形态的演变,喷嘴的流量系数以及喷孔出口速度都呈现出不同的变化趋势.空穴现象增大了流体喷束的喷雾锥角,是影响液体喷束雾化的重要因素.
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| 关 键 词： | 空穴 空穴数 内流特性 喷雾 |
Effect of Cavitation inside the Diesel Nozzle on the Spray Characteristics |
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| Fu Zhen,Li Weiquan,Xu Cangsu.Effect of Cavitation inside the Diesel Nozzle on the Spray Characteristics[J].Journal of Agricultural Mechanization Research,2009,31(3). |
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| Authors: | Fu Zhen Li Weiquan Xu Cangsu |
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| Institution: | 1.Institute of Power Machinery and Vehicular Engineering;Zhejiang University;Hangzhou 310027;China;2.Zhejiang Bureau of Quality and Technical Supervision;Hangzhou 310012;China |
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| Abstract: | Describing the formation of cavitation is based on Nurick's One-dimensional model.The modeling approach uses Bernoulli's equation of the fluid to analysis the internal flow.There are many contributing causes to cavitation ,among which the cavitation number is the most important parameter,any factor impacting cavitation number means that may affect cavitation. Cavitation has a great impact on internal flow.when cavitation pattern varies,the discharge coefficient and outlet velocity show different trends.The ... |
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| Keywords: | cavitation cavitation number internal flow characteristic spray |
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