Skip to main content
SpringerLink
Log in

Hydraulic Characteristics of Bottom Underlay-Type Pier for Water-Wing Control

  • Published:
Journal of Hydrodynamics Aims and scope Submit manuscript

Abstract

The pier, placed at the outlet of the pressure flow section, is an effective design to deal with the problems of the manufacture and operation of the gates for a discharge tunnel with high water head. It is crucial to control the water-wing, induced by this type of the pier. Through observing the phenomena of the water-wing, the reason of the water-wing inception, i.e., the concave of the flow surface, was presented, and a type of the new pier with bottom underlay was designed. The hydraulic characteristics of the pier, including the variations of the water-wing features, both length and height, with the water head, as well as with the concave depth, and with the height of the bottom underlay, and the variations of the concave depth with the height of the bottom underlay, were investigated by physical model experiments. The results show that the approach of the modification of the concave through the structures with the bottom underlay-type pier is remarkably effective in the water-wing control.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. WU Jian-hua, CAI Chang-guang and JI Wei et al. Experimental study on cavitation and water-wing for middle-piers of discharge tunnels[J]. Journal of Hydrodynamics, Ser. B, 2005, 17(4): 429–437.

    Google Scholar 

  2. WU Jian-hua, CAI Chang-guang and JI Wei et al. Hydraulic characteristics of water-wings for middle-pier of a discharge tunnel[J]. Journal of Hydrodynamics, Ser. B, 2006, 18(5): 567–571.

    Article  Google Scholar 

  3. MEI Yan. Research on sealing type of high water head radial gate[J]. Water Conservancy and Electric Power Machinery, 2006, 28(1): 12–15(in Chinese).

    Google Scholar 

  4. JIN Tai-lai. Collocation of gate for high dams[M]. Beijing: Science Press, 1994 (in Chinese).

    Google Scholar 

  5. XIAO Xing-bing, WANG Ye-hong. Study of hydraulic characteristics for gates with high head[J]. Advances in Science and Technology of Water Resources, 2001, 21(4): 29–32.

    Google Scholar 

  6. WU Jian-hua, CHAI GONG-chun and XIANG Tong. The hydraulic characteristics and optimization of the orifice plate flood discharge tunnel in Xiaolangdi Hydropower Station[J]. Journal of Hydraulic Engineering, 1995, (Suppl.): 101–109(in Chinese).

    Google Scholar 

  7. ZHANG Guang-dou, WANG Guang-lun. Hydraulic structures[M]. Beijing: China Hydro Power Press, 1984(in Chinese).

    Google Scholar 

  8. PAN Shui-bo, SHAO Ying-ying. Hydraulic estimation of a U-shape abrupt offset aeration device[J]. Journal of Hydraulic Engineering, 1986, (8): 12–20 (in Chinese).

    Google Scholar 

  9. NIE Meng-xi, WU Guang-hao. Effect of the lateral deflector on cavity design[J]. Journal of Tsinghua University, 2002, 42(4): 546–550 (in Chinese).

    Google Scholar 

  10. CHEN Qing-sheng, REN Xu-hua and YUAN Ying-zhong. Experimental study on hydraulics of gate with flexible water seal in Ertan project[J]. Journal of Hohai University, 1995, 23(4): 56–61(in Chinese).

    Google Scholar 

  11. CHEN Shu-wen, SHOU Wei-gang. Structure of convergent section of spillway in Hongjiadu project for shock wave control [J]. Water Resources and Hydropower Engineering, 1995, 26(3): 16–181 (in Chinese).

    Google Scholar 

  12. SORENSEN R. M. Stepped spillway hydraulic model investigation[J]. Journal of Hydraulic Engineering, ASCE, 1985, 111(12): 1461–1472.

    Article  Google Scholar 

  13. RAJARATNAM N. Skimming flow in stepped spillway[J]. Journal of Hydraulic Engineering, ASCE, 1990, 116(4): 587–591.

    Article  Google Scholar 

  14. CHANSON H. Stepped spillway flows and air entrainment[J]. Canadian Journal of Civil Engineering, 1993, 20(3): 422–435.

    Article  Google Scholar 

  15. HAN Yu, FENG Rui-lin and TIAN Jia-ning et al. Water-wing on steep slope of stepped spillway[J]. Journal of Hydroelectric Engineering, 2006, 25(1): 114–118(in Chinese).

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing, 210098, China

    Jian-hua Wu & Zhong-min Yan

Authors
  1. Jian-hua Wu
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Zhong-min Yan
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Jian-hua Wu.

Additional information

Project supported by the National Natural Science Foundation of China (Grant No. 50539060).

Biography: WU Jian-hua (1958-), Male, Ph. D., Professor

Rights and permissions

Reprints and permissions

About this article

Cite this article

Wu, Jh., Yan, Zm. Hydraulic Characteristics of Bottom Underlay-Type Pier for Water-Wing Control. J Hydrodyn 20, 735–740 (2008). https://doi.org/10.1016/S1001-6058(09)60009-3

Download citation

  • Received:

  • Revised:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1016/S1001-6058(09)60009-3

Key words

Search

Navigation