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首页> 外文会议>International Conference on Offshore Mechanics and Arctic Engineering 2004(OMAE 2004) vol.1 pt.B; 20040620-25; Vancouver(CA) >NUMERICAL ANALYSIS FOR HYDRODYNAMIC MOTIONS OF FLOATING STRUCTURE USING MPS METHOD
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NUMERICAL ANALYSIS FOR HYDRODYNAMIC MOTIONS OF FLOATING STRUCTURE USING MPS METHOD

机译：基于MPS方法的浮体水力运动数值分析。

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摘要

The authors started this research on estimation method of responses for floating structures using Computational Fluid Dynamics (CFD). This paper is first step, which has potential to be very valuable to the engineering community. The numerical method used in this study is the Moving Particle Semi-implicit (MPS) method, which is based on particles and their interactions. MPS method that was developed recently is one of particle method. The particle number density is implicitly required to be constant to satisfy incompressibility. A semi-implicit algorithm is used to for two dimensional incompressible non-viscous flow analysis. The particles whose particle number densities are below a set point are considered as on the free surface. In this paper, first, the authors explain the outline of MPS method that Kshizuka et al. developed. You can see more details of this method by references. And the calculation test of column collapse problem is carried out to check our code that we developed. Second, the modeling of free surfaces is explained. And the authors proposed the way to skip irregular data of wave height. Validation of wave profiles was carried out comparing Stokes theory. Third, calculation results of floating body are showed. This method of calculating response of floating structure is by Koshizuka et al. Finally, the authors show calculation results of wave exciting forces by MPS method comparing singular point distribution method (SDM).
机译：作者开始使用计算流体动力学（CFD）估算浮体结构的响应方法。本文是第一步，对工程界来说可能具有非常重要的价值。本研究中使用的数值方法是基于粒子及其相互作用的移动粒子半隐式（MPS）方法。最近开发的MPS方法是粒子方法之一。隐含地要求粒子数密度是恒定的，以满足不可压缩性。半隐式算法用于二维不可压缩的非粘性流分析。颗粒数密度低于设定点的颗粒被视为在自由表面上。在本文中，首先，作者解释了Kshizuka等人的MPS方法的概述。发达。您可以通过引用查看此方法的更多详细信息。并进行了柱倒塌问题的计算测试，以检查我们开发的代码。其次，解释自由表面的建模。并且作者提出了跳过波高不规则数据的方法。比较斯托克斯理论对波剖面进行了验证。第三，显示了浮体的计算结果。这种计算浮动结构响应的方法由Koshizuka等人提供。最后，作者比较了奇异点分布法（SDM），显示了采用MPS方法计算波浪激振力的结果。

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