摘要
溃坝现象广泛存在于船舶与海洋工程、港口与航道工程,水利水电工程等领域,并具有巨大的破坏性。同时,溃坝过程是一种非常复杂的流动现象,常常伴有自由液面的翻卷、破碎和飞溅现象,传统网格法在处理这些问题中往往会因为网格大变形而导致数值模拟的失败。本文采用一种经过改进的基于拉格朗日粒子的无网格方法(MPS),首先对固定侧壁的溃坝现象进行模拟,在验证该方法的有效性的基础上,探究了弹性支撑侧壁对溃坝现象中的流动形态、侧壁受力以及表面波对侧壁的砰击压力的影响规律。
The phenomenon of dam break exists widely in the fields of naval architecture and ocean engineering, harbor and waterway engineering, as well as hydraulic and hydro-power engineering, and has great destructive effects. At the same time, the dam break is a quite complex fluid flow, which is often accompanied by the rolling, breaking and splashing of the free liquid surface. The traditional grid methods often fail in the numerical simulation of such problems because of the large deformation of the grid. In this paper, an improved grid-free method based on Lagrange particles(MPS) is applied to investigate the dam break problems. At first, it is verified by simulating the dam break with fixed side wall. Based on this, the influence of elastic-supported side wall on the flow pattern, the force and the impact pressure on the side wall in dam break is investigated.
作者
吴巧瑞
王磊
谢永和
白兴兰
WU Qiao-rui;WANG Lei;XIE Yong-he(School of Naval Architecture and Mechanical-Electrical Engineering of Zhejiang OceanUniversity, Zhoushan 316022, China)
出处
《浙江海洋大学学报（自然科学版）》
CAS
北大核心
2019年第1期76-82,共7页
Journal of Zhejiang Ocean University：Natural Science
基金
国家自然科学基金(51679217
51879238)
浙江省自然科学基金(LQ17E090003)
浙江海洋大学博士科研启动基金(21045012715)
