Experimental study on influence of boundary on location of maximum velocity in open channel flows |
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| Authors: | Jing YAN Hong-wu TANG Yang XIAO Kai-jie LI Zhi-Jun TIAN |
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| Affiliation: | 1. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, P. R. China;National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety, Nanjing 210098, P. R. China;College of Water Conservancy and Hydropower, Hohai University, Nanjing 210098, P. R. China
2. College of Water Conservancy and Hydropower, Hohai University, Nanjing 210098, P. R. China |
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| Abstract: | 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 sid... |
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| Keywords: | velocity dip open channel flow location of maximum velocity sidewall effect aspect ratio |
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