航空学报 > 1994, Vol. 15 Issue (12): 1463-1466

平面混合层中混沌特征的实验研究

林建忠, 沈利平   

  1. 浙江大学力学系, 杭州, 310027
  • 收稿日期:1993-08-30 修回日期:1994-01-15 出版日期:1994-12-25 发布日期:1994-12-25

THE EXPEPERIMENTAL RESEARCH ON THE CHAOSIN A PLANE MIXINGLAYER

Lin Jianzhong, Shen Liping   

  1. Department of Mechanics, Zhejiang University, Hang Zhou, 310027
  • Received:1993-08-30 Revised:1994-01-15 Online:1994-12-25 Published:1994-12-25

摘要: 用热线风速仪和数据采样技术得到混合层中瞬时速度时间序列。计算了给定流向位置处,沿垂直于混合层的方向(横向)上不同点的流速功率谱、相关维数和相关熵;分析了流场的混沌特征;给出了流场横向变化特点。

关键词: 混合层, 相关, 混沌

Abstract: he time series of instantaneous velocity in the flows are obtained by the hot-wire technique and data sampling.Based on the data,power spectra,correlation dimension and corre-lation entropy along the lateral direction are computed,chaos indicators are analysed and the in-formation of flows along the lateral direction is given.

Key words: mixing layers, correlation, chaotic

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