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Hydraulic Characteristics of Vertical Vortex at Hydraulic Intakes

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Abstract

The trace of vertical vortex flow at hydraulic intakes is of the shape of spiral lines, which was observed in the presented experiments with the tracer technique. It represents the fluid particles flow spirally from the water surface to the underwater and rotate around the vortex-axis multi-cycle. This process is similar to the movement of screw. To describe the multi-circle spiral characteristics under the axisymmetric condition, the vertical vortex would change not only in the radial direction but also in the axial direction. The improved formulae for three velocity components for the vertical vortex flow were deduced by using the method of separation of variables in this article. In the improved formulae, the velocity components are the functions of the radial and axial coordinates, so the multi-circle spiral flow of vertical vortex could be simulated. The calculated and measured results for the vertical vortex flow were compared and the causes of errors were analyzed.

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Authors and Affiliations

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

    Yun-liang Chen, Chao Wu & Mao Ye

  2. College of Hydraulic and Hydroelectric Engineering, Sichuan University, Chengdu, 610065, China

    Yun-liang Chen & Xiao-ming Ju

Authors
  1. Yun-liang Chen
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  2. Chao Wu
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  3. Mao Ye
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  4. Xiao-ming Ju
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Corresponding author

Correspondence to Yun-liang Chen.

Additional information

Project supported by the National Natural Science Foundation of China (Grant No. 50379030) and the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20020610016).

Biography: CHEN Yun-liang(1976-),Male, Ph. D., Lecturer

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Chen, Yl., Wu, C., Ye, M. et al. Hydraulic Characteristics of Vertical Vortex at Hydraulic Intakes. J Hydrodyn 19, 143–149 (2007). https://doi.org/10.1016/S1001-6058(07)60040-7

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  • DOI: https://doi.org/10.1016/S1001-6058(07)60040-7

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