| 周期性扰动在湍流边界层中沿法向的衰减 |
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| 引用本文： | 王昕,姜楠,舒玮. 周期性扰动在湍流边界层中沿法向的衰减[J]. 实验力学, 2001, 16(3): 270-275 |
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| 作者姓名： | 王昕 姜楠 舒玮 |
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| 作者单位： | 天津大学,天津,300072 |
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| 基金项目： | 国家自然科学基金重点项目(19732005)的一部分 |
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| 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，利用X型热膜探针对下游扰动进行测量。研究了湍流边界层中周期性人工扰动对湍流结构的影响，获得了人工扰动在湍流边界层中沿法向的衰减趋势。
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| 关 键 词： | 湍流边界层 周期性扰动 自相关 功率谱 衰减 |
| 文章编号： | 1001-4888(2001)03-0270-06 |
| 修稿时间： | 2001-01-14 |
The Decaying of Periodic Disturbance in Turbulent Boundary Layer along Wall-normal Direction |
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| WANG Xin,Jiang Nan,SHU Wei. The Decaying of Periodic Disturbance in Turbulent Boundary Layer along Wall-normal Direction[J]. Journal of Experimental Mechanics, 2001, 16(3): 270-275 |
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| Authors: | WANG Xin Jiang Nan SHU Wei |
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| Abstract: | Artificial periodic disturbances are introduced to the outer field of turbulent boundary layer in an open circular style water channel. X style hot film probe and anemometer are employed to measure the disturbance in the downstream area. The effect of the disturbance to the turbulent structure is studied, and also, the decaying of periodic disturbances along the normal direction of turbulent boundary layer is acquired. |
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| Keywords: | turbulent boundary layer periodic disturbance self-correlation power spectrum decay |
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