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Numerical analysis of the nonlinear free surface flow around an advancing ship using moving particle semi-implicit method

机译：使用移动粒子半隐式方法对前进船周围的非线性自由表面流动的数值分析

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This paper presents a methodology to simulate the nonlinear free surface flow around an advancing ship. This methodology is based on the Moving Particle Semi-implicit (MPS) method, which is widely used to simulate the incompressible fluid flow. In this paper, the original MPS method is modified in order to analyze effectively the nonlinear free surface flow around an advancing ship. Several treatment techniques are newly proposed, and the original MPS method is modified by combining these techniques with other previous research studies. The proposed techniques include the Laplacian compensation model in the region near the body boundary, the collision model between fluid particles and wall particles, and some treatments for the opened boundary. The accuracy of the modified MPS method is verified through the numerical simulations on two benchmark problems for the performance evaluation of the particle methods and on the flows around both the wedged body and model ship. The numerical results demonstrate that the modified MPS method can be effectively applied to the simulation of nonlinear free surface flow around an advancing ship in marine engineering.
机译：本文提出了一种方法来模拟推进船周围的非线性自由表面流动。该方法基于移动粒子半隐式（MPS）方法，其广泛用于模拟不可压缩的流体流动。在本文中，修改了原始的MPS方法，以有效分析了推进船周围的非线性自由表面流动。新提出了几种处理技术，通过将这些技术与其他先前的研究研究相结合来修改原始MPS方法。所提出的技术包括在体边界附近的区域中的拉普拉斯补偿模型，流体颗粒和壁粒子之间的碰撞模型，以及用于开放边界的一些处理。通过数值模拟来验证修改的MPS方法的准确性，用于两个基准问题，用于颗粒方法的性能评估和楔形体和模型船周围的流动。数值结果表明，改进的MPS方法可以有效地应用于海洋工程中的前进船周围的非线性自由表面流动的模拟。

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