连续弯道水流紊动特性试验研究

王虹; 王连接; 邵学军; 何建波; 王欣

doi:10.6052/0459-1879-12-345

连续弯道水流紊动特性试验研究

1.
清华大学水沙科学与水利水电工程国家重点试验室, 北京 100084
2. 甘肃省电力局, 兰州 730050

基金项目: 国家自然科学基金(50979043,50879042)和水沙科学与水利水电工程国家重点试验室基金(2010-ZY-3)资助项目.

详细信息

通讯作者:
王虹,教授,主要研究方向:水力学及河流动力学.E-mail:hwang@mail.tsinghua.edu.cn

中图分类号: TV131.2
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出版历程
- 收稿日期: 2012-12-05
- 修回日期: 2013-01-23
- 刊出日期: 2013-07-17

TURBULENCE CHARACTERISTICS IN CONSECUTIVE BENDS

1.
State Key Laboratory of Hydro-Science and Engineering, Tsinghua University, Beijing 100084, China
2. Gansu Electric Power Research Institute, Lanzhou 730050, China

Funds: The project was supported by the National Natural Science Foundation of China (50979043, 50879042) and the Open Research Fund Program of State Key Laboratory of Hydroscience and Engineering (2010-ZY-3).

摘要

摘要: 采用电磁流速仪, 在接近天然河道形态的连续弯道中, 对沿程断面上各点的脉动流速进行量测.根据测得的数据分析得到了紊动能谱、紊动强度、紊动切应力、紊动能、紊动参数等的全断面分布.研究结果表明水流紊动主要集中在10 Hz以下,不同环流形式与各种紊动量之间会互相影响,边壁处纵向紊动强烈、横向和垂向紊动较弱.
- 连续弯道 /
- 紊动结构 /
- 二次流
Abstract: Measurements of turbulence characteristics are crucial to the study of bend flow. This paper presents detailed measurements of instantaneous 3D velocity at various cross-sections in consecutive bends by using a three-dimensional (3D) electromagnetic current meter. Details of turbulent flow characteristics in the bend were obtained, including turbulence spectrum, turbulence intensity, turbulent shear stress, etc. It is found out that turbulence energy is mainly carried by fluctuations below 10Hz. Turbulent flow characteristics are closely related to secondary current.
- consecutive bends /
- turbulence /
- secondary current

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参考文献(17)

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文章访问数: 1385
HTML全文浏览量: 119
PDF下载量: 1525
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连续弯道水流紊动特性试验研究

通讯作者:
王虹,教授,主要研究方向:水力学及河流动力学.E-mail:hwang@mail.tsinghua.edu.cn

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TURBULENCE CHARACTERISTICS IN CONSECUTIVE BENDS

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连续弯道水流紊动特性试验研究

通讯作者: 王虹,教授,主要研究方向:水力学及河流动力学.E-mail:hwang@mail.tsinghua.edu.cn

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出版历程

TURBULENCE CHARACTERISTICS IN CONSECUTIVE BENDS

计量

出版历程

目录

下载中心

作者中心

通讯作者:
王虹,教授,主要研究方向:水力学及河流动力学.E-mail:hwang@mail.tsinghua.edu.cn