摘要
MPS法是一种无网格拉格朗日计算方法,该方法用粒子取代网格,在前处理方面较为简便,且计算效率较高。在实际工程中,流体的流动很多都是湍流流动。而大涡模拟是研究湍流的一种主要手段。流固耦合是流体力学与固体力学交叉而生成的一门独立的力学分支,是目前很多领域研究的热点和难点。本文将大涡模拟(LES)与移动粒子半隐式法(MPS)相结合,求解湍流状态下的流固耦合问题。采用二维溃坝模型进行流固耦合数值模拟计算并将模拟结果与试验结果进行了对比分析,证明了MPS-LES方法可以很好地应用于溃坝流固耦合问题的模拟研究。
The Moving-Particle Semi-implicit method(MPS)is a kind of meshless Lagrangian calculation method,which uses particles to calculate instead of mesh.This method is simple and has a high computation⁃al efficiency.In this paper,a Lagrangian model for the numerical simulation of fluid-structure interaction problems is proposed.This method for both fluid and structure are described by MPS.The fluid is fully cou⁃pled with the solid that can undergo large structural deformations.In practical engineering work,many of flu⁃id problems are in turbulent flows.Large Eddy Simulation(LES),at the same time,is a major means for study⁃ing turbulence.The modified MPS method with Large Eddy Simulation Method is applied in two-dimensional dam-break problems,which proves that MPS method can be extended to solving the fluid-structure coupled problem with turbulent flows.
作者
杨超
张怀新
YANG Chao;ZHANG Huai-xin(School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)
出处
《船舶力学》
EI
CSCD
北大核心
2020年第10期1233-1242,共10页
Journal of Ship Mechanics
基金
国家自然科学基金资助项目(51479116,11272213)。
关键词
移动粒子半隐式法
流固耦合
大涡模拟
无网格法
Moving Particle Semi-implicit method(MPS)
Fluid Structure Interaction(FSI)
Large Eddy Simulation(LES)
meshless method
