| 弯道水流紊动强度 |
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| 引用本文： | 刘月琴,万艳春.弯道水流紊动强度[J].华南理工大学学报(自然科学版),2003,31(12):89-93. |
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| 作者姓名： | 刘月琴 万艳春 |
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| 作者单位： | 华南理工大学,交通学院,广东,广州,510640 |
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| 基金项目： | 广东省交通厅科技基金资助项目 (2 0 0 2 - 2 0 ) |
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| 摘 要： | 采用先进的三维声学多普勒流速仪对水力光滑壁面的弯道水流紊动特性进行了系统的试验研究，较为全面地测量了弯道水流的三维时均流速和脉动强度等．根据试验数据，探讨了弯道水流的紊动机理，分析了弯道水流的紊动特性，得出了弯道水流纵向相对紊动强度的数学表达式；同时还对弯道水流纵向、横向及垂向的紊动强度分布特点进行了比较．
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| 关 键 词： | 弯道水流 脉动强度分布 紊动结构 紊流 多普勒流速仪 |
| 文章编号： | 1000-565X(2003)12-0089-05 |
| 修稿时间： | 2003年8月20日 |
Turbulence Intensity of Bend Flow |
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| Liu Yue,qin,Wan Yan,chun.Turbulence Intensity of Bend Flow[J].Journal of South China University of Technology(Natural Science Edition),2003,31(12):89-93. |
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| Authors: | Liu Yue qin Wan Yan chun |
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| Abstract: | This paper presents an experimental study on the flow characteristics of the bendway on the hydraulic smooth plane by means of the advanced three dimensional acoustics Doppler current meter. Time average velocity and fluctuating intensity are measured from all aspects. The turbulent characteristics of bend flow are analyzed and a mathematical expression of the relative turbulent intensity along longitudinal direction is acquired. In addition, the distribution characters of longitudinal, lateral and vertical turbulent intensities are compared. |
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| Keywords: | bend flow fluctuating intensity distribution turbulent structure |
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