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Volume 41 Issue 4
Apr.  2015
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Journal of Beijing University of Aeronautics and Astronautics  > 2015  >  41(4): 656-662.
ZHANG Xiaoshi, WANG Cong, CAO Wei, et al. Hydrodynamic features of underwater vehicles based on flow control[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(4): 656-662. doi: 10.13700/j.bh.1001-5965.2014.0299(in Chinese)
Citation: ZHANG Xiaoshi, WANG Cong, CAO Wei, et al. Hydrodynamic features of underwater vehicles based on flow control[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(4): 656-662. doi: 10.13700/j.bh.1001-5965.2014.0299(in Chinese)
shu

Hydrodynamic features of underwater vehicles based on flow control

doi: 10.13700/j.bh.1001-5965.2014.0299

  • School of Astronautics, Harbin Institute of Technology, Harbin 150001, China

  • Received Date: 26 May 2014
  • Rev Recd Date: 11 Aug 2014
  • Publish Date: 20 Apr 2015
    Abstract
  • The hydrodynamic characteristics of underwater vehicles were numerical modelling studied by CFX. Shear stress transport turbulence model control equation of mixed media, Reynolds-averaged Navier-Stokes equation and mass transport equation between each phase were solved, and three dimensional numerical simulation methods were adopted to contrast and analyze the variation characteristics of cavity shape, surface pressure distribution and drag coefficient of underwater vehicles with different flow controlschemes. The effects of different parameters on drag reduction effect were also discussed. The result shows that, for the vertical underwater launching vehicles under cross-flow effect, multiphase flow control can not only lower the asymmetry of ventilated cavity and drag force of vehicles, but also balance the pressure on the positive side and back surfaces to realize the control of cavity shape and surface pressure characteristics etc. of vehicle multiphase flow. Furthermore, the location of ventilation hole has a significant influence on drag reduction effect.

     

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