喷油嘴喷射方向偏离的影响因素

王延忠; 牛文韬; 唐文; 郭梅; 郭霞; 战鹏; 赵智姝; 沈蓉

喷油嘴喷射方向偏离的影响因素

王延忠^1,2,
牛文韬¹,
唐文¹,
郭梅³,
郭霞³,
战鹏³,
赵智姝⁴,
沈蓉⁵

1.
北京航空航天大学机械工程及自动化学院,北京 100191
2.
重庆大学机械传动国家重点实验室,重庆 400044
3.
中国航空工业集团公司沈阳发动机设计研究所,沈阳 110015
4.
海军航空兵学院航空机械实验室辽宁锦州 121012
5.
北方车辆研究所车辆传动重点实验室,北京 100072

基金项目: 航空科学基金(20090451008), (20090451009)

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出版历程
- 收稿日期: 2011-08-30
- 刊出日期: 2012-07-28

Research on deflection of nozzle spray direction

1.
School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics,Beijing 100191,China
2.
State Key Laboratory of Mechanical Transmission, Chongqing University,Chongqing 400044,China
3.
Shenyang Aero Engine Research Institute, Aviation Industry Corporation of China,Shenyang 110015,China
4.
Laboratory of Aviation Mechanical,College of Navy and Aviation, Jinzhou Liaoning 121012,China
5.
National Key Laboratory of Vehicle Transmission, China North Vehicle Research Institute,Beijing 100072,China

摘要

摘要: 针对航空发动机润滑系统喷油嘴喷射方向的偏离问题进行研究.首先分析了喷油嘴喷射方向发生偏离的机理,然后通过计算流体动力学(CFD)的方法与软件,建立了喷油嘴喷油过程的三维数值计算模型,对不同入口速度和喷油嘴长径比条件下的喷射方向进行了多组计算与比较,得到了影响喷射方向偏离的因素及其影响规律.研究发现:喷油嘴入口处的径向速度分量导致了喷射方向的偏离,径向速度分量与法向速度分量之比越大,喷油嘴长径比越大,喷射方向偏离程度越大;对已定的喷油嘴入口速度或长径比,能够找到与之匹配的长径比或入口速度,使得喷油方向无偏离.
- 喷油嘴 /
- 喷射方向 /
- 计算流体动力学 /
- 入口速度 /
- 长径比
Abstract: The jet flow deflection of aero-engine lubrication system was researched.The deflection mechanism was analyzed firstly.Then a three-dimensional numeric model of the nozzle was established based on the method and application of computational fluid dynamics(CFD).Then the spray direction with different inlet velocities and nozzle slenderness ratios was computed.Finally,the influential factor of the deflection and its rule were obtained through the comparison of the results.The study found that the radial velocity causeed the deflection of the spray direction.The greater ratios of radial velocity to normal velocity as well as length to diameter,the higher level the deflection.The results also show that the suitable match of inlet velocity and ratio of length to diameter result in no deflection.
- oil nozzle /
- spray direction /
- computational fluid dynamics /
- inlet velocity /
- ratio of length to diameter

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参考文献(12)

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