Experimental study on influence of boundary on location of maximum velocity in open channel flows
Experimental study on influence of boundary on location of maximum velocity in open channel flows
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DOI：
10.3882/j.issn.1674-2370.2011.02.006
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发表时间：
2011-06
影响因子：
4
通讯作者：
Jing Yan;Hongwu Tang;Yang Xiao;Kai-jie Li;Zhijun Tian
中科院分区：
文献类型：
--
作者：
Jing Yan;Hongwu Tang;Yang Xiao;Kai-jie Li;Zhijun Tian
The velocity dip phenomenon may occur in a part of or in the whole flow field of open channel flows due to the secondary flow effect. Based on rectangular flume experiments and the laser Doppler velocimetry, the influence of the distance to the sidewall and the aspect ratio on the velocity dip is investigated. Through application of statistical methods to the experimental results, it is proposed that the flow field may be divided into two regions, the relatively strong sidewall region and the relatively weak sidewall region. In the former region, the distance to the sidewall greatly affects the location of maximum velocity, and, in the latter region, both the distance to the sidewall and the aspect ratio influence the location of the maximum velocity.
