弱可压缩移动粒子半隐式方法(WC-MPS)与湍流大涡模型(LES)模拟溃坝流动(英文)  

Weakly Compressible Moving Particle Semi-Implicit Method(WC-MPS) with Large-Eddy Simulation(LES)Turbulence Model for Numerical Simulation of Dam-break Flows

作　　者：刘永涛[1,2] 马宁[1] 朱仁庆 顾解忡[1] 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200240 [2]江苏科技大学船舶与海洋工程学院,江苏镇江212003

出　　处：《船舶力学》2014年第12期1415-1423,共9页Journal of Ship Mechanics

基　　金：Supported by the National Natural Science Foundation of China(Grant No.51279105,10472032,50879030,51179077);The Project Founded by Priority Academic Program Development of Jiangsu Higher Education Institutions~~

摘　　要：应用弱可压缩移动粒子半隐式法(WC-MPS)结合湍流大涡模型(LES)模拟了自由液面流动问题。该方法通过流体状态方程实现流场压力的直接计算,并根据大涡模拟Smagorinsky模型来计算湍流项。最后应用该方法,针对两个溃坝自由液面流动问题,特别考虑不同粒子直径以及湍流Smagorinsky系数,进行数值对比研究以及实验对比分析,得到了采用较小粒子直径和较大湍流Smagorinsky系数模拟大变形自由液面具有较好结果的结论。In order to simulate the free surface flows, this paper employs a Weakly Compressible Moving Particle Semi-implicit method（WC-MPS） with large-eddy simulation（LES） turbulence model. For this method, the pressure field is obtained efficiently by Tait＇s equation of state, and the turbulence terms are determined by the LES Smagorinsky model. Applying this WC-MPS method, considering two dam-break cases, focusing on the effects of the particle distance and Smagorinsky constant on the numerical results, the numerical comparative studies and the experimental validation studies are carried out, and the conclusion drawn is that the numerical model with a small particle distance and a large Smagorinsky constant has a good simulation results for the free surface flow with largely deformed free surface profiles.

关 键 词：WC-MPS LES 自由表面 溃坝 

分 类 号：O35[理学—流体力学]