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Volume 34 Issue 10
Oct.  2008
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Journal of Beijing University of Aeronautics and Astronautics  > 2008  >  34(10): 1191-1194.
WANG Jianmin, WU Yunjie, LIU Youmin, et al. Resonance suppression method based on digital filter for servo system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(3): 485-491. doi: 10.13700/j.bh.1001-5965.2014.0218(in Chinese)
Citation: Cao Damin, Xu Xu. Numerical simulation of cavitation flow field for under water projectile[J]. Journal of Beijing University of Aeronautics and Astronautics, 2008, 34(10): 1191-1194. (in Chinese)
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Numerical simulation of cavitation flow field for under water projectile

  • School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 11 Sep 2007
  • Publish Date: 31 Oct 2008
    Abstract
  • A homo-equilibrium model was used to compute the hydrodynamic cavitation flow field over an axisymmetric projectile by solving the incompressible Navier-Stokes equations. The governing equations were resolved in a finite volume manner, the convective fluxes were treated by an upwind differencing scheme and the time was integrated using the LU-SGS approach. A mass transfer model introduced by Kunz was implemented in a viscous Navier-Stokes solver. A preconditioning method was used for the low-speed computations and the point implicit method for the mass transfer source terms. The computations were performed for the cavitation flow of an axisymmetric projectile under the Reynold number of 136000 and the cavitation number of 0.1, 0.2 and 0.3. The wall pressure coefficients on the axisymmetric projectile were obtained and compared with experimental data, the agreements were excellent. And then, the super-cavitation phenomena were studied for σ＝0.2,0.1, 0.06, and the super-cavitation flow-field was obtained for cavitation number σ＝0.06.

     

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