北京航空航天大学学报 ›› 2019, Vol. 45 ›› Issue (8): 1560-1568.doi: 10.13700/j.bh.1001-5965.2018.0693

• 多相流测量 • 上一篇    下一篇

直连式甩油盘非均匀流动特性

叶宇隆1,2, 金捷1,2, 刘睿1,2, 高翔1,2, 王方1,2   

  1. 1. 北京航空航天大学 能源与动力工程学院, 北京 100083;
    2. 北京航空航天大学 先进航空发动机协同创新中心, 北京 100083
  • 收稿日期:2018-11-26 出版日期:2019-08-20 发布日期:2019-09-06
  • 通讯作者: 王方 E-mail:fwang@buaa.edu.cn
  • 作者简介:叶宇隆 男,硕士研究生。主要研究方向:折流式燃烧室甩油盘的雾化仿真模拟;王芳 女,副教授。主要研究方向:两相湍流流动、燃烧及其数值模拟。
  • 基金资助:
    国家重点研发计划(2017YFB0202400,2017YFB0202402);国家自然科学基金(91741125)

Non-uniform flow characteristics of direct-connected fuel slinger

YE Yulong1,2, JIN Jie1,2, LIU Rui1,2, GAO Xiang1,2, WANG Fang1,2   

  1. 1. School of Energy and Power Engineering, Beihang University, Beijing 100083, China;
    2. Collaborative Innovation Center of Advanced Aero-Engine, Beihang University, Beijing 100083, China
  • Received:2018-11-26 Online:2019-08-20 Published:2019-09-06
  • Supported by:
    National Key R & D Program of China (2017YFB0202400,2017YFB0202402); National Natural Science Foundation of China (91741125)

摘要: 针对甩油盘启动过程中的流动特性,采用三维数值模拟方法研究甩油盘内外两相流场流动特性,并结合高速摄影实验结果、理论结果进行综合分析。结果表明:甩油盘的总出流量随时间发生明显变化,幅度较大。在短时间内,甩油盘各孔流量差异巨大,各孔对应的索泰尔平均直径(SMD)值相差不大,SMD主要取决于转速。各孔流量不同,雾化场分布不均匀,实验结果验证了这一现象。

关键词: 航空发动机甩油盘, 仿真模拟, 高速摄影, 索泰尔平均直径(SMD), 非均匀特性

Abstract: Aimed at the flow property in the start-up process of fuel slinger, three-dimensional numerical simulation was used to study the flow property of the inner and outer two-phase flow field of fuel slinger. Combined with the experimental results of high-speed photography and theory, comprehensive analysis was carried out. The results show that the total out mass-flow rate varies with time largely. Each hole's out mass-flow rate is also different to a great extent within short time period. The Sauter mean diameter (SMD) difference for different holes is relatively small compared with the SMD difference caused by rotation rate. The SMD is mainly determined by rotary speed. The spatial distribution of the spray is uneven as the result of different single holes' out mass-flow rate. The experimental results confirm the simulation outcomes.

Key words: aero-engine fuel slinger, analogue simulation, high-speed photography, Sauter mean diameter (SMD), non-axisymmetric property

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