Numerical simulation of impact loads using a particle method
Numerical simulation of impact loads using a particle method
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DOI：
10.1016/j.oceaneng.2009.12.003
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发表时间：
2010-02
影响因子：
5
通讯作者：
Byung-Hyuk Lee;Je-min Park;Moo-Hyun Kim;S.-J. Jung;M. Ryu;Yooil Kim
中科院分区：
文献类型：
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作者：
Byung-Hyuk Lee;Je-min Park;Moo-Hyun Kim;S.-J. Jung;M. Ryu;Yooil Kim
使用移动粒子半隐式 (MPS) 方法研究与结构相互作用的剧烈自由表面运动，该方法最初由 Koshizuka 和 Oka (1996) 提出，用于不可压缩流动模拟。在当前的数值方法中，使用更有效的拉格朗日运动粒子算法来解决各种高度非线性的自由表面问题，而不使用欧拉方法或网格系统。因此，纳维-斯托克斯方程中的对流项和时间导数可以更直接地计算，而不会出现任何数值扩散、不稳定性或拓扑失效。特别是，MPS方法适用于液体进入和砰击问题的模拟，例如液化天然气储罐中的湿滴（液-液碰撞）测试以及不同入射角的刚性板上的砰击载荷（固-液碰撞）。数值结果与现有的实验数据非常吻合。
The violent free-surface motions interacting with structures are investigated using the moving particle semi-implicit (MPS) method, which was originally proposed by Koshizuka and Oka (1996) for incompressible flow simulation. In the present numerical method, a more efficient algorithm for Lagrangian moving particles is used for solving various highly nonlinear free-surface problems without using the Eulerian approach or the grid system. Therefore, the convection terms and time derivatives in the Navier–Stokes equation can be calculated more directly without any numerical diffusion, instabilities, or topological failure. In particular, the MPS method is applied to the simulation of liquid-entry and slamming problems, such as wet-drop (liquid–liquid collision) tests in an LNG tank and slamming loads (solid–liquid collision) on rigid plates with various incident angles. The numerical results are in good agreement with available experimental data.