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Scale Effects of Air-Water Flows in Stilling Basin of Multi-Horizontal Submerged Jets

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Abstract

A series of experiments were carried out on multi-horizontal submerged jets with four different model scales of 1:36, 1:57, 1:80, 1:200. In routine tests, scale effects have to be considered, due to complex vortex structure and strong air entrainment in stilling basin. Our focus was laid on measuring and analyzing the time-averaged pressure distribution, water depth and closed-to-bed velocity in the stilling basin of multi-horizontal submerged jets. The experiments results show that the model scale has but a slight effect on the time-averaged hydraulic characteristics in the stilling basin of multi-horizontal submerged jets, which indicates that the results of time-averaged hydraulic characteristics for a normal pressure model are reliable. However, the scale effects of air entrainment, fluctuation pressure and vortex structure call for further investigations in order to make the results of experiments serve as scientific references for practical engineering.

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Authors and Affiliations

  1. State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, 610065, China

    Jian-gang Chen, Jian-min Zhang, Wei-lin Xu & Yu-rong Wang

Authors
  1. Jian-gang Chen
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  2. Jian-min Zhang
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  3. Wei-lin Xu
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  4. Yu-rong Wang
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Corresponding author

Correspondence to Jian-min Zhang.

Additional information

Project supported by the National Key Basic Research Program of China (973 Program, Grant No. 2007CB714105), the Science Foundation of Ministry of Education of China (Grant No. 2008108111) and the Program for New Century Excellent Talents in University (Grant No. NCET-08-0378).

Biography: CHEN Jian-gang (1982-), Male, Ph. D. Candidate

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Chen, Jg., Zhang, Jm., Xu, Wl. et al. Scale Effects of Air-Water Flows in Stilling Basin of Multi-Horizontal Submerged Jets. J Hydrodyn 22, 788–795 (2010). https://doi.org/10.1016/S1001-6058(09)60117-7

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  • DOI: https://doi.org/10.1016/S1001-6058(09)60117-7

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