典型自由面流动问题的SPH-ALE数值模拟

doi:10.19596/j.cnki.1001-246x.7551

计算物理 ›› 2017, Vol. 34 ›› Issue (6): 641-650.DOI: 10.19596/j.cnki.1001-246x.7551

典型自由面流动问题的SPH-ALE数值模拟

上官子柠¹, 周秀丽², 宋鑫¹, 陈谦¹

1. 中国舰船研究院, 北京 100101;
2. 沪东中华造船(集团)有限公司, 上海 200129

收稿日期:2016-10-19 修回日期:2017-01-04 出版日期:2017-11-25 发布日期:2017-11-25
作者简介:上官子柠(1987-),男,博士,工程师,研究方向为舰船总体,E-mail:sgzn@163.com
基金资助:
国家自然科学基金（51379051）资助项目

Numerical Simulation of Typical Free Surface Flow with SPH-ALE

SHANGGUAN Zining¹, ZHOU Xiuli², SONG Xin¹, CHEN Qian¹

1. China Ship Research and Development Academy, Beijing 100101, China;
2. Hudong-Zhonghua Shipbuilding(Group) Co. Ltd, Shanghai 200129, China

Received:2016-10-19 Revised:2017-01-04 Online:2017-11-25 Published:2017-11-25

摘要/Abstract

摘要： 应用基于黎曼解的SPH-ALE方法对两种典型自由面流动问题进行数值模拟，并提出一种一阶核函数修正压力计算方法，通过对临近边界的水粒子压力进行核积分，近似估算固壁边界压力.给出不同时刻的流场压力分布及自由液面演化过程，将计算结果与相关的试验值及数值解进行对比，分析结果表明：SPH-ALE方法较传统SPH方法在流场压力计算精度上有较大的改进，在处理强非线性自由面流动问题时能够达到较高的精度.

关键词: 自由面流动, 黎曼解, SPH-ALE, 压力震荡

Abstract: We present simulation of two typical free surface flows using Smoothed Particle Hydrodynamics-Arbitrary Lagrangian Eulerian(SPH-ALE) method basd on Rimann-solver. A first order kernel correction pressure integral method is presented, which was used to estimate pressure of boundary by integrating water particles within the kernel radius influence. Distribution of pressure field and evolution of free surface are given, and compared with experimental data and numerical solutions. It shows that SPH-ALE method is more accurate and reliable than traditional SPH in pressure calculation of flow field. It has a higher precision in solving strong nonlinear free surface flows.

Key words: free surface flow, Riemann solver, SPH ALE, pressure oscillation

中图分类号:

O351.2

上官子柠, 周秀丽, 宋鑫, 陈谦. 典型自由面流动问题的SPH-ALE数值模拟[J]. 计算物理, 2017, 34(6): 641-650.

SHANGGUAN Zining, ZHOU Xiuli, SONG Xin, CHEN Qian. Numerical Simulation of Typical Free Surface Flow with SPH-ALE[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2017, 34(6): 641-650.

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典型自由面流动问题的SPH-ALE数值模拟

Numerical Simulation of Typical Free Surface Flow with SPH-ALE

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