Wave Impact Pressure Calculations by Improved SPH Methods
Wave Impact Pressure Calculations by Improved SPH Methods
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发表时间：
2009-12
影响因子：
0.8
通讯作者：
Abbas Khayyer;H. Gotoh
中科院分区：
文献类型：
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作者：
Abbas Khayyer;H. Gotoh
本文提出了改进的不可压缩SPH（ISPH）方法预测的波浪冲击压力，更具体地说，由于晃动波的冲击压力。第一个改进是采用了一个校正函数来增强角动量守恒。第二项改进应用了从高阶微分导出的高阶源项，以实现波动更小且更准确的压力计算。第三个改进提出了一个新的标准，更准确地评估自由表面粒子在基于粒子的计算。通过模拟由摇摆激励引起的晃动波的4种情况，证明了改进的ISPH方法在预测波浪冲击压力方面的增强性能（Kishev等人，2006）和旋转的（Delorme等人，2009年）。
This paper presents improved Incompressible SPH (ISPH) methods for the prediction of wave impact pressure, more specifically, impact pressure due to sloshing waves. The first improvement is the employment of a corrective function for enhancing angular momentum conservation. The second improvement applies a higher-order source term that is derived from a higher-order differentiation for a less fluctuating and more accurate pressure calculation. The third improvement proposes a new criterion for a more accurate assessment of free-surface particles in a particle-based calculation. The enhanced performance of improved ISPH methods in predicting wave impact pressure has been shown by simulating 4 cases of sloshing waves induced by sway excitations (Kishev et al., 2006) and rotational ones (Delorme et al., 2009).