基于VOF方法和DFBI模型的溃坝水流数值模拟  

Numerical simulation method of dam break flow based on VOF method and DFBI model

作　　者：马云飞 李涛[1] 熊进标 MA Yunfei;LI Tao;XIONG Jinbiao(School of Mechanical and Power Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学机械与动力工程学院,上海200240

出　　处：《应用科技》2021年第4期23-28,共6页Applied Science and Technology

摘　　要：为了评价在溃坝冲击效应问题中流体体积函数(VOF)方法与流体–刚体相互作用(DFBI)模型结合的适用性,本文开展了挡板溃坝的高速可视化实验。观测了液位变化及挡板摆角变化,结合Overset网格技术,对挡板溃坝问题开展了计算流体力学(CFD)数值模拟。在验证分析中,比较了不同初始液位条件下实验和数值模拟得到的溃坝最高液位和挡板摆角的变化。结果表明,VOF方法结合DFBI模型能够较好处理溃坝冲击效应问题。In order to evaluate the applicability of volume of fluid(VOF)method combined with dynamic fluid body interaction(DFBI)method in dam break impact effect problem,we carried out a high-speed visualization experiment of dam break,observed the change of liquid level and swing angle of baffle,and then carried out the computational fluid dynamics(CFD)numerical simulation of dam break problem by combining with the Overset grid technology.In the verification analysis,the changes of the maximum liquid level and the pendulum angle of the dam break obtained by experiment and numerical simulation under different initial liquid level conditions were compared.The results show that the VOF method combined with the DFBI model can deal with the impact effect of dam break well.

关 键 词：流体体积函数方法 流体–刚体相互作用 流固耦合 溃坝 Overset网格 计算流体力学 欧拉两相 挡板振荡 

分 类 号：TV122.4[水利工程—水文学及水资源]