Investigation of ship-bank, ship-bottom and ship-ship interactions by using potential flow method
Investigation of ship-bank, ship-bottom and ship-ship interactions by using potential flow method
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发表时间：
2016-05
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通讯作者：
Z. Yuan;A. Incecik
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作者：
Z. Yuan;A. Incecik
作者受MASHCON[1,2]中基准模型试验数据的启发，近年来基于势流法对船岸、船底和船船相互作用进行了一些数值研究。在狭窄的水道中，许多研究者质疑经典势流法的适用性。本文的主要目的是根据模型试验数据对三维边界元法（BEM）进行一些验证，以检验势能法在预测船舶在密闭水中的水动力性能方面的可行性。本文采用的方法是基于朗肯格林函数的三维边界元法。数值模拟是基于自主开发的多体水动力相互作用程序MHydro。我们计算波浪的高度和力（或力矩）时，船是在浅和狭窄的渠道操纵，或当两艘船并排或交叉行驶。将这些计算结果与基准测试数据以及已发表的CFD结果进行了比较。总的来说，本文计算与模型试验和CFD结果吻合较好，表明势流法和开发的程序仍然能够预测船岸、船底和船-船问题的水动力相互作用。
The authors were inspired by the benchmark model test data in MASHCON [1, 2] and carried out some numerical studies on ship-bank, ship-bottom and ship-ship interactions based on potential flow method in the last few years. In the confined waterways, many researchers question the applicability of the classical potential flow method. The main objective of the present paper is to present some validations of the 3D boundary element method (BEM) against the model test data to exam the feasibility of the potential method in predicting the hydrodynamic behaviour of the ships in confined water. The methodology used in the present paper is a 3D boundary element method based on Rankine type Green function. The numerical simulation is based on the in-house developed multi-body hydrodynamic interaction program MHydro. We calculate the wave elevations and forces (or moments) when the ship is manoeuvring in shallow and narrow channel, or when the two ships is travelling side by side or crossing each other. These calculations are compared with the benchmark test data, as well as the published CFD results. Generally, the agreement between the present calculations and model test and CFD results are satisfactory, which indicates that the potential flow method and developed program are still capable to predict the hydrodynamic interaction involved in ship-bank, ship-bottom and ship-ship problem.