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Numerical analysis of added resistance on ships in short waves

机译：短波船上附加阻力的数值分析

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摘要

In the present study, a Rankine panel method, which is based on the potential theory and a Cartesian-grid method, which solves the Euler equation directly, are applied to calculate ship motion and added resistance. In the Rankine panel method, a near-field method which calculates added resistance by integrating the second-order pressure on a body surface is adopted. In the Cartesian grid method, the wave-body interaction problem is considered as a multiphase problem, and volume fraction functions are defined in order to distinguish each phase in a Cartesian grid system. The added resistance is calculated by subtracting the steady surge force from the mean surge force measured in motion problems. This study focuses on added resistance under short wave conditions. Calculation capacities of the Rankine panel method and Cartesian grid method in short wavelength are systematically analyzed for several models, including Series 60 hulls (C_B=0.7, 0.8), S175 containerships and KVLCC2 hulls. In addition, established asymptotic methods in short wavelength are examined.
机译：在本研究中，基于势能理论的兰金面板法和直接求解欧拉方程的笛卡尔网格法被用于计算船舶运动和附加阻力。在兰金面板法中，采用了通过对身体表面的二次压力进行积分来计算附加阻力的近场法。在笛卡尔网格方法中，波体相互作用问题被视为多相问题，并且定义了体积分数函数以区分笛卡尔网格系统中的每个相。通过从运动问题中测得的平均喘振力中减去稳定喘振力来计算出附加阻力。这项研究的重点是短波条件下的附加电阻。系统地分析了60系列船体（C_B = 0.7，0.8），S175集装箱船和KVLCC2船体等几种模型的朗肯平板法和笛卡尔网格法在短波长下的计算能力。另外，研究了已建立的短波渐近方法。

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  • 来源
    《Ocean Engineering》 |2014年第1期|97-110|共14页
  • 作者

    Min-Guk Seo; Kyung-Kyu Yang; Dong-Min Park; Yonghwan Kim;

  • 作者单位

    Department of Naval Architecture and Ocean Engineering, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea;

    Department of Naval Architecture and Ocean Engineering, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea;

    Department of Naval Architecture and Ocean Engineering, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea;

    Department of Naval Architecture and Ocean Engineering, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Added resistance; EEDI; Short wave approximation; Rankine panel method; Cartesian grid method; Grid convergence test;

    机译：增加抵抗力;EEDI;短波近似;兰金面板法;笛卡尔网格法;网格收敛测试;

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