航空学报 > 2013, Vol. 34 Issue (7): 1588-1595   doi: 10.7527/S1000-6893.2013.0277

水滴撞击特性的粒子统计法研究

韩雅慧1,2, 柯鹏3, 杨春信1, 刘丹阳1   

  1. 1. 北京航空航天大学 航空科学与工程学院, 北京 100191;
    2. 陆军航空兵学院 机械工程系, 北京 100123;
    3. 北京航空航天大学 交通科学与工程学院, 北京 100191
  • 收稿日期:2012-09-24 修回日期:2012-12-13 出版日期:2013-07-25 发布日期:2012-12-24
  • 通讯作者: 杨春信 E-mail:yangchunxin@sina.com
  • 作者简介:韩雅慧,女,博士研究生,讲师。主要研究方向:人机与环境工程系统仿真。Tel:010-82338531,E-mail:han_huier@163.com;杨春信,男,博士,教授,博士生导师。主要研究方向:多项流传热、飞行器环境与安全救生及人机环境与工程。Tel:010-82339528,E-mail:yangchunxin@sina.com

Research on Particle Statistic Method of Water Droplet Impingement Characteristics

HAN Yahui1,2, KE Peng3, YANG Chunxin1, LIU Danyang1   

  1. 1. School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China;
    2. Mechanical Engineering Department, Army Aviation Institute, Beijing 100123, China;
    3. School of Transportation Science and Engineering, Beihang University, Beijing 100191, China
  • Received:2012-09-24 Revised:2012-12-13 Online:2013-07-25 Published:2012-12-24

摘要:

基于水滴撞击特性研究的拉格朗日方法,提出了适合于考察非定常情况的粒子统计法。通过统计非定常流场中不同时刻撞击在防冰表面上不同区域的粒子数,获得防冰表面上粒子浓度分布随时间的变化情况,与基于染色法水滴撞击试验获得的色度分布具有直接对应关系;采用基于染色法的动态图像测量方法对某型发动机帽罩缩比模型开展了水滴撞击特性试验,对所提粒子统计法进行了验证。基于拉格朗日方法的粒子统计法获得的计算结果与试验结果符合较好,与采用拉格朗日轨迹法获得的结果具有较好的一致性。粒子统计法所模拟的物理过程与试验过程一致,在处理湍流随机性和来流液态水含量分布不均等方面具有优势。

关键词: 防冰, 水滴撞击特性, 发动机帽罩, 粒子统计法, 动态测量

Abstract:

A statistic method on Lagrangian method is proposed based, which is suitable for use in the research of water droplet impingement characteristics in an unsteady flow. By counting the number of particles which impact on different regions of an anti-ice surface at different times, the time history of particle concentration distribution on the anti-ice surface is obtained, and the results are directly related with the chroma distribution obtained by water droplet impingement experiments. Such experiments are carried out on a scaled model of an engine dome which is used to verify the statistic method proposed in this paper. The calculation results obtained through the statistic method fit with the experimental results commendably, and are consistent with the results calculated by Lagrangian trajectory method. The physical process simulated by the statistic method is in agreement with that of the experiment, and is superior in treating such unsteady effect as the randomicity of turbulent flow and the nonuniform distribution of liquid water content contained in the coming flow.

Key words: anti-icing, water droplet impingement characteristic, engine dome, particle statistic method, dynamic measurement

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