Volume 4 Issue 2
Jun.  2011
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Article Navigation >  Water Science and Engineering  > 2011  >  4(2): 185-191
Jing YAN, Hong-wu TANG, Yang XIAO, Kai-jie LI, Zhi-Jun TIAN. 2011: Velocity Dip and Boundary Influence on the location of the Maximum Velocity in Open Channel Flows: An Experimental study. Water Science and Engineering, 4(2): 185-191. doi: 10.3882/j.issn.1674-2370.2011.02.006
Citation: Jing YAN, Hong-wu TANG, Yang XIAO, Kai-jie LI, Zhi-Jun TIAN. 2011: Velocity Dip and Boundary Influence on the location of the Maximum Velocity in Open Channel Flows: An Experimental study. Water Science and Engineering, 4(2): 185-191. doi: 10.3882/j.issn.1674-2370.2011.02.006
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Velocity Dip and Boundary Influence on the location of the Maximum Velocity in Open Channel Flows: An Experimental study

doi: 10.3882/j.issn.1674-2370.2011.02.006
  • 1.

    State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, P. R. China

  • 2.

    National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety, Nanjing 210098, P. R. China

  • 3.

    College of Water Conservancy and Hydropower, Hohai University, Nanjing 210098, P. R. China

Funds:  This work was supported by the National Natural Science Foundation of China (Grants No. 50879019, 50909036, and 50879020)
More Information
  • Corresponding author: Jing YAN
  • Received Date: 2010-10-25
  • Rev Recd Date: 2011-05-27
    Abstract
  • The Velocity Dip phenomenon will appear in part or whole flow field of open channel flows due to the secondary flow effect. Based on rectangular flume experiments and Laser Doppler Velocimetry, the influence of the distance to side wall and the aspect ratio of the Velocity Dip is investigated. Through applying statistical methods to obtained results,, it is proposed that the flow field may be divided into two regions, the Relative Strong Side Wall Region and the Relative Weak Side Wall Region. In the Relative Strong Side Wall Region, the distance to the side wall greatly affects the location of maximum velocity, and in the Relative Weak Side Wall Region, both the distance to the side wall and the aspect ratio influence the location of maximum velocity.

     

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    • References(9)
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