| 波浪爬高的PSPH方法数值模拟研究 |
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| 引用本文： | 周丰,孙家文,郑坤.波浪爬高的PSPH方法数值模拟研究[J].水运工程,2011(2):1-6. |
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| 作者姓名： | 周丰 孙家文 郑坤 |
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| 作者单位： | 1. 中交水运规划设计院有限公司,北京,100007
2. 大连理工大学海岸和近海工程国家重点实验室,辽宁,大连,116024 |
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| 摘 要： | 通过Poisson方程迭代求解压力场的SPH方法,建立了模拟水波动力学问题的数值模型,将亚格子湍流模式加入方程中,更加精确地描述了波浪破碎时的湍流特性。针对SPH方法中粒子靠近边界处由于粒子缺失导致核函数的截断而引起计算误差,将核函数梯度修正引入了数值计算模型中。同时提出一种新的边界压力计算方法,改善了边界压力计算的精度。对孤立波及椭余波在斜坡上的爬坡破碎过程进行了数值模拟,数值结果与实验结果吻合较好。表明该方法在对复杂水波动力问题的数值模拟上是行之有效的。
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| 关 键 词： | 光滑粒子流体动力学 Poisson方程 波浪破碎 |
PSPH method for simulating wave run-up on slope |
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| ZHOU Feng,SUN Jia-wen,ZHENG Kun.PSPH method for simulating wave run-up on slope[J].Port & Waterway Engineering,2011(2):1-6. |
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| Authors: | ZHOU Feng SUN Jia-wen ZHENG Kun |
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| Institution: | ZHOU Feng1,SUN Jia-wen2,ZHENG Kun2(1.CCCC Water Transportation Consultants Co.,Ltd.,Beijing 100007,China,2.State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China) |
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| Abstract: | This paper presents a numerical wave model based on enhanced smoothed particle hydrodynamics method with pressure solver through Poisson equation.In order to describe the turbulence characteristics of wave breaking accurately,the sub-particle scaling is added to the model.Particles near boundaries have a kernel smoothing functions truncated due to the absence of neighboring particles,thus the kernel gradient correction is added to the model.A new estimation method is also presented for predicting the pressu... |
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| Keywords: | smoothed particle hydrodynamics Poisson equation wave breaking |
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