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Volume 21 Issue 4
 
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Article Navigation >  Journal of Unmanned Undersea Systems  > 2013  >  21(4): 246-249
ZHOU Jing-jun, LI Yu-ying, XIANG Qing-rui. A Numerical Computation Method of Additional Mass for Underwater Vehicle[J]. Journal of Unmanned Undersea Systems, 2013, 21(4): 246-249. doi: 10.11993/j.issn.1673-1948.2013.04.002
Citation: ZHOU Jing-jun, LI Yu-ying, XIANG Qing-rui. A Numerical Computation Method of Additional Mass for Underwater Vehicle[J]. Journal of Unmanned Undersea Systems, 2013, 21(4): 246-249. doi: 10.11993/j.issn.1673-1948.2013.04.002
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A Numerical Computation Method of Additional Mass for Underwater Vehicle

doi: 10.11993/j.issn.1673-1948.2013.04.002

  • The 705 Research Institute, China Shipbuilding Industry Corporation, Xi′an 710075, China

  • Received Date: 2012-10-18
  • Rev Recd Date: 2013-03-21
  • Publish Date: 2013-08-20
    Abstract
  • A high-precision and high-efficiency method of computing additional mass for an underwater vehicle is pro-posed by solving the 3-D N-S equations based on the relative motion principle. This method is convenient to compute the additional mass for an underwater vehicle with complex shapes. The additional inertia force(moment) is achieved from the difference of hydrodynamics of fluids in unsteady and steady motions, then the additional mass is obtained. By adding the source term to the momentum equation, the unsteady flow field is solved to simulate the real structure of flow field, and the difficulty generated by complex grid rebirth in using the dynamic grid is avoided. The accuracy of the proposed method is also assured because of adopting the same grid. The validity of the proposed method is verified by the exact solution of ellipsoid.

     

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