Experimental study on the flow characteristics at local diverging-converging sections in mountain lotus root shape channel

Wang Xiekang

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Experimental study on the flow characteristics at local diverging-converging sections in mountain lotus root shape channel

更新时间：2023-11-14

- Experimental study on the flow characteristics at local diverging-converging sections in mountain lotus root shape channel
- Advanced Engineering Sciences Vol. 45, Issue Z2, Pages: 51-54(2013)
- 作者机构：
  
  1. 四川大学水力学与山区河流开发保护国家重点实验室
  2. 珠江水文水资源勘测中心
  3. 四川大学水力学与山区河流开发保护国家
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2013，
  
  Published Online：15 April 2013，
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周苏芬,赵小娥,黄尔,刘兴年,王协康.山区宽窄相间河道渐扩渐缩局部区域水流运动特性试验研究[J].工程科学与技术,2013,45(Z2):51-54.

Wang Xiekang. Experimental study on the flow characteristics at local diverging-converging sections in mountain lotus root shape channel. [J]. Advanced Engineering Sciences 45(Z2):51-54(2013)
周苏芬,赵小娥,黄尔,刘兴年,王协康.山区宽窄相间河道渐扩渐缩局部区域水流运动特性试验研究[J].工程科学与技术,2013,45(Z2):51-54. DOI：

Wang Xiekang. Experimental study on the flow characteristics at local diverging-converging sections in mountain lotus root shape channel. [J]. Advanced Engineering Sciences 45(Z2):51-54(2013) DOI：

摘要

中文摘要: 河宽渐变是天然河道的普遍形态特征。基于室内概化试验，采用声学多普勒流速仪（ADV）测试分析了宽窄相间河道渐扩渐缩局部区域水流运动特性。试验表明：河宽变化影响着水流运动特征，如渐扩区域时均流速、断面环流中上部流速逐渐减少，而渐缩区域呈现相反的趋势。此外，宽窄相间不同水深区域均出现水流分离区，渐缩区域受壅水影响，流速分布趋于均匀化。

Abstract

Abstract:The wide gradual channel is a common form of natural rivers. The flow structure was measured in the physical model of the wide gradual channel using Acoustic Doppler velocimeter. The results show that the flow presents different evolutions between the local diverging sections and converging sections. The scales of the streamwise velocity and the secondary flow of the upper layer decrease in diverging sections

however

the later shows the inverse variations in converging sections. In addition

the flow separation occurs in the whole lotus root shape channel.

关键词

宽窄相间河道水流结构断面环流水流分离区

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