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Numerical study of damage ship hydrodynamics

机译：破损船水动力的数值研究

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摘要

A RANS based CFD solver with VOF modeling of free surface is employed to investigate the effects of sloshing and flooding on damage ship hydrodynamics. The numerical study includes three research works, i.e. the simulations of forced roll motion of an intact ship, sloshing of water in tank and forced roll motion of a damage ship. The computed roll moments in the tank and at opening were compared. The coefficient of roll damping was obtained and validated against model test data. The results show that the impact of sloshing on damage ship hydrodynamics is frequency dependent. It becomes significant near natural roll frequency of the tank. The phase differences between hydrodynamic and hydrostatic components are increasing with frequency. The flooding at opening of a damage ship tends to alleviate the sloshing impact.
机译：利用基于RANS的CFD解算器（具有自由表面的VOF建模）来研究晃荡和淹水对舰船流体动力学的影响。数值研究包括三项研究工作，即完整船的强制横摇运动，舱内水晃荡和损坏船的强制横摇运动的模拟。比较了罐中和打开时计算出的侧倾力矩。获得了侧倾阻尼系数，并针对模型测试数据进行了验证。结果表明，晃荡对受损船舶流体动力学的影响与频率有关。在水箱的自然横摇频率附近，它变得很重要。流体动力和静水力组件之间的相位差随频率增加。损害舰开航时的洪水往往会减轻晃动的影响。

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  • 来源
    《Ocean Engineering》 |2012年第12期|p.199-205|共7页
  • 作者

    Qiuxin Gao; Dracos Vassalos;

  • 作者单位

    University of Strathclyde and Glasgow, Department of Naval Architecture and Marine Engineering, G4 0LZ, Glasgow, United Kingdom;

    University of Strathclyde and Glasgow, Department of Naval Architecture and Marine Engineering, G4 0LZ, Glasgow, United Kingdom;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    sloshing; flooding; roll; intact; damage; coefficients;

    机译：晃动洪水;滚;完整;损伤;系数;

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