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Journal of Hydrodynamics

, Volume 25, Issue 6, pp 886–894 | Cite as

Cavitation bubbles collapse characteristics behind a convex body

  • Yao Li (李瑶)
  • Wei-lin Xu (许唯临)Email author
  • Ya-lei Zhang (张亚磊)
  • Jing-wei Zhang (张敬威)
  • Chun-qi Chen (陈春祺)
  • Arong (阿蓉)
Article

Abstract

Cavitation bubbles behind a convex body were experimentally studied by a high speed camera and a hydrophone synchronously. The experiments were conducted in a circulating water tunnel with five various contraction ratios: β = 0.497, β = 0.6, β = 0.697, β = 0.751, and β = 0.799. The distributions of the cavitation bubble collapse positions behind the five different convex bodies were obtained by combining the images taken by the high speed camera. According to the collapse positions, it was found that no cavitation bubble was collapsed in the region near the wall until the ratio of the water head loss over the convex body height was larger than 20, which can be used to predict if the cavitation damage would occur in the tunnel with orifice energy dissipaters.

Key words

convex body cavitation bubble collapse high speed camera cavitation noise 

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References

  1. [1]
    ZHANG Chang-bing. Research on hydraulic properties of an orifice spillway tunnel[D]. Doctoral Thesis, Chengdu, China: Sichuan University, 2003(in Chinese).Google Scholar
  2. [2]
    WU Jian-hua, AI Wan-zheng. Flows through energy dissipaters with sudden reduction and sudden enlargement forms[J]. Journal of Hydrodynamics., 2010, 22(3): 360–365.MathSciNetCrossRefGoogle Scholar
  3. [3]
    HE Yi-ying, YANG Fan. Application of plug energy dissipater to elimination of bubbles in cooling water occurred to the outlet of power plants[J]. Journal of Hydraulic Engineering., 2008, 39(8): 976–981(in Chinese).Google Scholar
  4. [4]
    CHEN I. Y., TSENG C. Y. and LIN Y.-T. et al. Twophase flow pressure change subject to sudden contraction in small rectangular channels[J]. International Journal of Multiphase Flow., 2009, 35(1): 297–306.CrossRefGoogle Scholar
  5. [5]
    LI Zhuo, YU Jian and MA Chong-fang. Local resistances of single-phase flow across abrupt expansion and contraction in small channels[J]. Journal of Chemical Industry and Engineering., 2007, 58(5): 1127–1131(in Chinese).Google Scholar
  6. [6]
    DAI Hui-chao, XU Wei-lin and GAO Ji-zhang et al. Application and improvement of turbulent model in high dam hydraulics[J]. Water Resources and Power, 2007, 25(4): 54–57(in Chinese).Google Scholar
  7. [7]
    TAMURA Y., MATSUMOTO Y. Improvement of bubble model for cavitation flow simulations[J]. Journal of Hydrodynamics., 2009, 21(1): 41–46.CrossRefGoogle Scholar
  8. [8]
    YANG Zhi-ming. Discussion and new checking of scale effects for cavitation inception[J]. Chinese Journal of Hydrodynamics., 2008, 23(5): 580–584(in Chinese).Google Scholar
  9. [9]
    LIU Shan-jun, YANG Yong-quan and XU Wei-lin et al. Hydraulic characteristics of throat-type energy dissipater in discharge tunnels[J]. Journal of Hydraulic Engineering, 2002, (7): 46–52(in Chinese).Google Scholar
  10. [10]
    XIA Qing-fu, NI Han-gen. Numerical simulation of plug dissipater[J]. Journal of Hydraulic Engineering, 2003, (8): 37–42(in Chinese).Google Scholar
  11. [11]
    YIN Ze-gao, SHI Bing and ZHAO Lin et al. Numerical simulation of plug energy dissipater flow[J]. Advances in Water Science., 2008, 19(1): 89–93(in Chinese).Google Scholar
  12. [12]
    TIAM Z. Hydraulic characteristics of stepped plug dissipater in flood discharge tunnel[C]. Proceeding of IAHR Congress EEEC. Seoul, Korea, 2005, 1445-1446.Google Scholar
  13. [13]
    LI S. Cavitation enhancement of silt erosion–An envisaged micro model[J]. Wear., 2006, 260(9-10): 1145–1150.Google Scholar
  14. [14]
    NAOE T., FUTAKAWA M. Optically observation of mercury cavitation bubble collapsing[J]. Experimental Thermal and Fluid Science., 2013, 44(1): 550–555.CrossRefGoogle Scholar
  15. [15]
    LAUER E., HU X. Y. and HICKEL S. et al. Numerical modeling and investigation of symmetric and asymmetric cavitation bubble dynamics[J]. Computers and Fluids., 2012, 69: 1–19.zbMATHGoogle Scholar

Copyright information

© China Ship Scientific Research Center 2013

Authors and Affiliations

  • Yao Li (李瑶)
    • 1
  • Wei-lin Xu (许唯临)
    • 1
    Email author
  • Ya-lei Zhang (张亚磊)
    • 1
  • Jing-wei Zhang (张敬威)
    • 1
  • Chun-qi Chen (陈春祺)
    • 1
  • Arong (阿蓉)
    • 1
  1. 1.State Key Laboratory of Hydraulics and Mountain River EngineeringSichuan UniversityChengduChina

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