The Effect of Periodic Disturbance to the Hierarchical Structure in Turbulent Boundary Layer

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The Effect of Periodic Disturbance to the Hierarchical Structure in Turbulent Boundary Layer

CHENG Xueling^{1, 2}, HU Fei¹

¹State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric Physics, Chinese Academy of Science, Beijing, 100029; ²State Key Laboratory for Turbulence and Complex System, Department of Mechanical and Engineering Science, Peking University, Beijing, 100871

Received:2004-04-09 Online:2005-09-20 Published:2005-09-20

周期性扰动对湍流边界层层次结构的影响

程雪玲^1,2,胡非¹

¹中国科学院大气物理研究所大气边界层物理和大气化学国家重点实验室，北京，100029；²北京大学力学与工程科学系，湍流与复杂系统研究国家重点实验室，北京，100871

Abstract

Abstract: Artificial periodic disturbances are introduced to the outer field of turbulent boundary layer in an closed-circuit open water channel. Statistical method is employed for analyzing the velocity-fluctuation-time-series. The effect of the disturbance to turbulent structure in boundary layer is studied. The result indicates the She-Leveque hierarchical similarity exists among high frequency turbulence.

Key words: periodic vibration, turbulence, scaling law, hierarchical structure

摘要： 在开口式循环水槽底部湍流边界层外区中引入周期性扰动，对湍流场的速度脉动时间序列信号进行了统计分析，研究了湍流边界层中周期性人工扰动对湍流结构的影响，结果表明高频扰动的湍流中She-Leveque（简称SL）湍流层次相似律成立。

关键词: 周期性扰动, 湍流, 标度律, 层次结构

CLC Number:

CHENG Xueling,HU Fei. The Effect of Periodic Disturbance to the Hierarchical Structure in Turbulent Boundary Layer[J]. Acta Scientiarum Naturalium Universitatis Pekinensis.

程雪玲,胡非. 周期性扰动对湍流边界层层次结构的影响[J]. 北京大学学报（自然科学版）.

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https://xbna.pku.edu.cn/EN/Y2005/V41/I5/688

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The Effect of Periodic Disturbance to the Hierarchical Structure in Turbulent Boundary Layer

周期性扰动对湍流边界层层次结构的影响

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