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吉林化工学院学报, 2021, 38(3): 22-26     https://doi.org/10.16039/j.cnki.cn22-1249.2021.03.005
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燃油喷嘴结构参数对空化性能的影响研究
陆洪杰,甘树坤*,吕雪飞
吉林化工学院 机电工程学院,吉林 吉林 132022
A Study of the Effect of Fuel Nozzle Structural Parameters on Cavitation Performance
LU Hongjie,GAN Shukun*,LV Xuefei
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摘要 

柴油机喷嘴内的空化对柴油机的性能会产生严重影响,一方面它能促进燃油的雾化,使得燃油在发动机内部能高效、充分的燃烧,降低了积炭产生的可能;另一方面空化能引起喷嘴内部的空蚀磨损,从而影响喷嘴的使用寿命与性能。本文通过计算流体力学,采用VOF模型加空化模型研究喷嘴的结构参数对空化性能的影响。采用无量纲量的方法,对气液进口夹角比、气液进口长度比,气液进口直径比三个无量纲量进行分析。为以后研究气液两相燃油喷嘴燃油雾化特性提供理论基础。

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陆洪杰
甘树坤
吕雪飞
关键词:  燃油喷嘴  结构参数  VOF模型  无量纲量     
Abstract: 

Cavitation in the diesel nozzle can have a serious impact on the performance of the diesel engine. On the one hand, it promotes the atomisation of the fuel, enabling efficient and sufficient combustion of the fuel inside the engine and reducing the possibility of carbon build-up. On the other hand cavitation can cause cavitation wear inside the nozzle, thus affecting the life and performance of the nozzle. This paper investigates the effect of nozzle structural parameters on cavitation performance through computational fluid dynamics using a VOF model plus a cavitation model. Three dimensionless quantities, the gas-liquid inlet angle ratio, the gas-liquid inlet length ratio, and the gas-liquid inlet diameter ratio, are analysed using the dimensionless quantity method. To provide a theoretical basis for future research into the fuel atomisation characteristics of gas-liquid two-phase fuel nozzles.

Key words:  Fuel nozzle    Structural parameters    VOF model    Dimensionless quantity
               出版日期:  2021-03-25      发布日期:  2021-03-25      整期出版日期:  2021-03-25
TK 229  
引用本文:    
陆洪杰, 甘树坤, 吕雪飞. 燃油喷嘴结构参数对空化性能的影响研究 [J]. 吉林化工学院学报, 2021, 38(3): 22-26.
LU Hongjie, GAN Shukun, LV Xuefei. A Study of the Effect of Fuel Nozzle Structural Parameters on Cavitation Performance . Journal of Jilin Institute of Chemical Technology, 2021, 38(3): 22-26.
链接本文:  
https://xuebao.jlict.edu.cn/CN/10.16039/j.cnki.cn22-1249.2021.03.005  或          https://xuebao.jlict.edu.cn/CN/Y2021/V38/I3/22
[1] 甘树坤, 陆洪杰, 吕雪飞. 燃油温度及喷嘴结构对燃油内部流动性能影响研究 [J]. 吉林化工学院学报, 2021, 38(9): 60-66.
[2] 陆洪杰, 甘树坤, 吕雪飞. 基于Fluent的拉瓦尔喷嘴结构优化设计 [J]. 吉林化工学院学报, 2020, 37(5): 20-24.
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