河道下游存在梯级水库的溃坝洪水演进模拟研究  

Simulation of Dam-break Flood Evolution with Cascade Reservoirs in the Lower Reaches of River

作　　者：贺成山 陈情情 刘波[1] 吴昊[1] 郭鲁楠 He Chengshan;Chen Qingqing;Liu Bo;Wu Hao;Guo Lunan(Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学,安徽淮南232001

出　　处：《科学技术创新》2022年第30期147-150,共4页Scientific and Technological Innovation

摘　　要：利用CFD开源软件OpenFOAM模拟溃坝水流在下游存在梯级水库时的演进过程,选用荷兰海洋研究所进行的物理模型试验验证模型的可靠性。利用VOF法捕捉溃坝水流的自由液面变化,采用k-ε模型进行模拟,通过雷诺时间平均方程进行封闭。通过模拟可知,溃坝水流经过梯级水库后流量减小,洪水的动能和势能总和减小,对下游的冲击破坏减小,该模型能够有效的减小溃坝洪水对下游区域的影响。The CFD open source software OpenFOAM is used to simulate the evolution process of the dam burst flow in the downstream cascade reservoir, and the physical model test conducted by the Dutch Ocean Research Institute is used to verify the reliability of the model. The VOF method was used to capture the free liquid level change of the dam burst flow, and the k-ε model was simulated and closed by the Reynolds’ s time averaging equation. According to the simulation, the flow flow through the cascade reservoir decreases, the combined kinetic energy and potential energy of the flood decrease, and the impact damage to the downstream is reduced. This model can effectively reduce the impact of the dam burst flood on the downstream area.

关 键 词：OPENFOAM 梯级水库 洪水演进 

分 类 号：TV122.4[水利工程—水文学及水资源]