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Yiwei Wang Chenguang Huang Tezhuan Du Xin Fang Naigang Liang. Mechanism analysis about cavitation collapse load of underwater vehihles in a vertical launching process[J]. Chinese Journal of Theoretical and Applied Mechanics, 2012, 44(1): 39-48. DOI: 10.6052/0459-1879-2012-1-lxxb2011-139
Citation: Yiwei Wang Chenguang Huang Tezhuan Du Xin Fang Naigang Liang. Mechanism analysis about cavitation collapse load of underwater vehihles in a vertical launching process[J]. Chinese Journal of Theoretical and Applied Mechanics, 2012, 44(1): 39-48. DOI: 10.6052/0459-1879-2012-1-lxxb2011-139
shu

Mechanism analysis about cavitation collapse load of underwater vehihles in a vertical launching process

  • 1.

    Key Laboratory for Hydrodynamics and Ocean Engineering, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China

  • 2.

    The State Key Laboratory of Nonlinear Mechanics , Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China

  • Received Date: May 30, 2011
  • Revised Date: September 17, 2011
    Graphical Abstract
    • Abstract
  • Pressure pulses generated by cavitation collapse when vehicles launching through the free surface will form the key load which decides the strength of structures. Consequently, it is very significant to investigate the mechanism of cavitation evolution and collapse. Firstly, a typical vertical launching process was simulated, and time sequences of pressure distribution gained were verified by experimental results. Through the analysis about flow fields, mechanism for the occurrence and evolution of cavitation collapse was investigated. Furthermore, a physical model of collapse pressure was established, by which influence of important factors such as cavity thickness, thickness of water layer, sound speed were studied. Finally, relative issues about the similarity law of scaled tests and load-reduction measurements were discussed.
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