飞机结冰冰型微结构特征的分形研究

杜雁霞; 桂业伟; 柯鹏; 王勋年

飞机结冰冰型微结构特征的分形研究

1.
中国空气动力研究与发展中心计算空气动力研究所,四川绵阳 621000
2.
北京航空航天大学交通科学与工程学院,北京 100191

基金项目: 国家自然科学基金(50906097); 中国博士后科学基金特别资助项目

计量
- 文章访问数: 1836
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- 被引次数: 0
出版历程
- 收稿日期: 2010-04-25
- 修回日期: 2010-07-26
- 刊出日期: 2011-05-28

Investigation on the ice-type microstructure characteristics of aircraft icing based on the fractal theories

1.
Computational Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang Sichuan 621000, China
2.
School of Transportation Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 基于分形几何的基本理论,采用结冰风洞实验与金相显微实验相结合的方法,对飞机结冰冰型的微结构特征进行了研究.采用计盒维数法对冰型微结构的分形维数进行了计算,获得了不同条件下前缘结冰及溢流结冰冰型的分形维数,并建立了冰型分形维数与结冰条件之间的关系.研究表明,来流温度和速度对冰型的微结构特征及其分形维数有着重要影响.来流速度越高或温度越低,冰型微结构分形维数越大,反之分形维数越小.在相同条件下,溢流结冰的微结构分形维数要低于前缘结冰.
- 飞机 /
- 结冰 /
- 冰型 /
- 微结构特征 /
- 分形几何 /
- 分形维数
Abstract: The ice-type microstructure characteristics of aircraft icing were investigated by combining icing tunnel and metallography tests based on the theories of fractal geometry.The fractal dimension of the ice-type microstructure was calculated by means of box-counting dimension method,and the relationship between the fractal dimension and the icing conditions was analyzed.The results indicate that the inflow temperature and velocity of the airflow have great influence on the fractal dimension of ice-type microstructure.The higher velocity or the lower the temperature means greater fractal dimension,and vice versa.Under the same icing conditions,the fractal dimension of runback icing is smaller than the leading edge icing.
- aircraft /
- icing /
- ice-type /
- microstructure characteristics /
- fractal geometry /
- fractal dimension

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参考文献(12)

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