Comparative study on computation of ship added resistance in waves
Comparative study on computation of ship added resistance in waves
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DOI：
10.1016/j.oceaneng.2013.07.008
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发表时间：
2013-11
影响因子：
5
通讯作者：
Min-guk Seo;Dong-Min Park;Kyung-Kyu Yang;Yonghwan Kim
中科院分区：
文献类型：
--
作者：
Min-guk Seo;Dong-Min Park;Kyung-Kyu Yang;Yonghwan Kim
近年来，减少温室气体排放的民用船舶的设计成为海军建筑领域的一个热点。船舶设计者需要找到在海浪中阻力最小的最佳船体形状。因此，精确计算附加阻力对于预测随机海浪中功率的增加变得更加重要。本文着重对波浪中船舶附加阻力的计算结果进行了比较。为了计算附加阻力，应用了三种不同的数值方法：条带法、朗肯面元法和笛卡尔网格法，该方法求解欧拉方程。为了预测附加阻力，在条带法和朗肯面元法中采用近场和远场方法，而在笛卡尔网格法中直接计算附加阻力。通过与Wigley船体、60系列船体和S175集装箱船的实验数据进行比较，验证了计算结果，并显示出所有模型的合理一致性。这项研究扩展到短波长的附加电阻的分析，因此，所建立的短波渐近方法进行检查。
Recently, the design of commercial ships that produce less greenhouse gas has been of great interest in naval architecture fields. Ship designers are asked to find optimum hull forms with minimum resistance in ocean waves. An accurate computation of added resistance, therefore, is getting more important for the prediction of power increase in random ocean waves. This study focuses on a comparison of the computational results of added resistance on ships in waves. To calculate added resistance, three different numerical approaches are applied: the strip method, the Rankine panel method, and the Cartesian grid method, which solves the Euler equation. In order to predict added resistance, near- and far-field approaches are adopted in the strip and Rankine panel methods, while added resistance is calculated directly in the Cartesian grid method. The computational results are validated by comparing them with experimental data on Wigley hulls, Series 60 hulls, and the S175 containership, and show reasonable agreements for all models. The study is extended to the analysis of added resistance in short wavelengths; therefore, the established asymptotic methods for short waves are examined.