SPH方法在自由面问题中的应用

张喜秋; 于昌利

引用本文:	张喜秋,于昌利.SPH方法在自由面问题中的应用[J].水利水运工程学报,2011,(2):

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SPH方法在自由面问题中的应用
张喜秋¹,于昌利²
1. 山东交通学院海运学院,山东威海,264200 2. 哈尔滨工业大学船舶工程学院,山东威海,264209

摘要:

作为无网格粒子法,SPH法在处理大变形、自由面流动问题时具有显著的优势.介绍了SPH法的基本数值方法,并基于SPH法数值模拟了2个二维溃坝问题,将计算结果与试验数据进行了比较,结果表明:SPH法在处理自由面时具有很强的适应性.尽管水面发生了翻卷、破碎等剧烈的变化,但SPH法仍然能够较好地捕捉到这些流动现象,同时数值模拟得到的水头位置和自由面形状均能与试验结果相吻合,表明SPH法在处理自由面问题时具有较高的准确性及可靠性.

关键词: 无网格粒子法 SPH法自由面溃坝

DOI：

分类号:O351.2

基金项目:

Application of SPH method to solving free surface problems

ZHANG Xi-qiu¹,YU Chang-li²

ZHANG Xi-qiu1,YU Chang-li2(1.Maritime College,Shandong Jiaotong University,Weihai 264200,China,2.School of Naval Architecture,Harbin Institute of Technology,Weihai 264209,China)

Abstract:

As a relatively new meshless particle method,smoothed particle hydrodynamics(SPH) method has an excellent advantage in dealing with largely-deformed free surface flows.The detailed numerical method about SPH is introduced in this paper,and two 2D dam break cases are simulated with SPH method.The numerical results are compared with experimental data,showing that: SPH method has a very good flexibility in tracking free surface.Though there are violent changes in free surface,such as turn up and breaking,SPH m...

Key words: meshless particle method SPH method free surface dam break