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首页> 外文期刊>International Journal of Offshore and Polar Engineering >Numerical Analysis on Added Resistance of Ships
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Numerical Analysis on Added Resistance of Ships

机译：船舶附加阻力的数值分析

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摘要

This paper presents a comparison of the computational results of added resistance on ships in waves by 2 different numerical methods, namely the direct pressure integration method (near-field method) and the momentum conservation method (far-field method). These methods are combined with the Neumann-Kelvin and double-body linearization schemes, which are used to calculate lst-order velocity potentials and their derivatives. In this study, the time-domain formulation is considered, and the corresponding equations of added resistance are derived. As a method of solution, a higher-order Rankine panel method is used, and the added resistance is evaluated using lst-order velocity potentials and their derivatives. The computational results are validated by comparing them with experimental data on Wigley hull models, the Series 60 hull and S175 containership; reasonable agreements are observed for all the models. The study is extended to the analysis of added resistance in irregular waves, and the proper criteria for a time window and number of wave frequencies are observed for an irregular sea.
机译：本文通过两种不同的数值方法，即直接压力积分法（近场法）和动量守恒法（远场法），比较了船舶在波浪中附加阻力的计算结果。这些方法与Neumann-Kelvin和双体线性化方案相结合，用于计算一阶速度势及其导数。在这项研究中，考虑了时域公式，并推导了相应的附加电阻方程。作为解决方法，使用高阶兰金面板法，并使用一阶速度势及其导数评估附加电阻。通过与Wigley船体模型，Series 60船体和S175集装箱船的实验数据进行比较，验证了计算结果；所有模型均遵守合理的协议。该研究扩展到不规则波浪中附加阻力的分析，并观察了不规则海浪的时间窗和波频率数量的适当标准。

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