| 减阻沟槽表面近壁湍流相干运动的实验研究 |
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| 引用本文： | 李新华,董守平,赵志勇,陈俊峰.减阻沟槽表面近壁湍流相干运动的实验研究[J].山东大学学报(理学版),2006,41(2):106-110. |
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| 作者姓名： | 李新华 董守平 赵志勇 陈俊峰 |
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| 作者单位： | 1. 中国石油大学(北京)机电工程学院,北京,102249
2. 中国石化集团安全工程研究院,山东,青岛,266071 |
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| 基金项目： | 中国石油天然气集团公司资助项目 |
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| 摘 要： | 以光滑平板及间隔V型减阻沟槽面为研究对象，利用二维激光多普勒测速系统(laser doppler velocimetry, LDV)，获得零压力梯度时光滑平板及沟槽板上部区域湍流边界层流场的流向和壁法向的湍流脉动分量.考察了沟槽对速度脉动的二阶及三阶相关统计参数的影响，并将这些相关量的变化情况与边界层中的相干运动相结合，由此来探讨沟槽面与湍流边界层之间的相互作用规律.
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| 关 键 词： | 减阻沟槽面 湍流边界层 雷诺切应力 相干运动 |
| 文章编号： | 1671-9352（2006）02-0106-05 |
| 收稿时间： | 2006-11-22 |
| 修稿时间： | 2006-11-22 |
Experiment on coherent motions in the turbulent near-wall region over a drag-reducing grooved surface |
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| LI Xing-hua,DONG Shou-ping,ZHAO Zhi-yong,CHEN Jun-feng.Experiment on coherent motions in the turbulent near-wall region over a drag-reducing grooved surface[J].Journal of Shandong University,2006,41(2):106-110. |
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| Authors: | LI Xing-hua DONG Shou-ping ZHAO Zhi-yong CHEN Jun-feng |
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| Institution: | 1. Electromechanical project institute, China University of Petroleum, Beijing 102249, China; 2. Institute of Safety Engineering, SINOPEC, Qingdao 266071, Shandong, China |
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| Abstract: | Measureraents of flow field by means of a two-compouent LDV system have been carried out in turbulent boundary layers over a smooth surface and a drag reducing grooved surface with a zero pressure gradient. Variations of the second- and third-order moments of velocity fluctuations are investigated to give thorough information on coherent motions in the turbulent near-wall region over both surfaces. |
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| Keywords: | drag reducing grooved surface turbulent boundary layer Reynolds shear stress coherent motion |
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