Numerical Study of Dam-Break Induced Tsunami-Like Bore with A Hump of Different Slopes

作     者：CHENG Du ZHAO Xi-zeng ZHANG Da-ke CHEN Yong 

作者机构：Ocean College Zhejiang University Zhoushan 316021 China 

出 版 物：《China Ocean Engineering》 (中国海洋工程（英文版）)

年 卷 期：2017年第31卷第6期

页      面：683-692页

核心收录：

学科分类：0710[理学-生物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 0908[农学-水产] 08[工学] 0707[理学-海洋科学] 081501[工学-水文学及水资源] 0807[工学-动力工程及工程热物理] 0815[工学-水利工程] 0824[工学-船舶与海洋工程] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：financially supported by the National Natural Science Foundation of China(Grant Nos.51479175 and 51679212) Zhejiang Provincial Natural Science Foundation of China(Grant No.LR16E090002) 

主　　题：dam break tsunami-like bore CIP method VOF method immersed boundary method 

摘      要：Numerical simulation of dam-break wave, as an imitation of tsunami hydraulic bore, with a hump of different slopes is performed in this paper using an in-house code, named a Constrained Interpolation Profile （CIP）-based model. The model is built on a Cartesian grid system with the Navier Stokes equations using a CIP method for the flow solver, and employs an immersed boundary method （IBM） for the treatment of solid body boundary. A more accurate interface capturing scheme, the Tangent of hyperbola for interface capturing/Slope weighting （THINC/SW） scheme, is adopted as the interface capturing method. Then, the CIP-based model is applied to simulate the dam break flow problem in a bumpy channel. Considerable attention is paid to the spilling type reflected bore, the following spilling type wave breaking, free surface profiles and water level variations over time. Computations are compared with available experimental data and other numerical results quantitatively and qualitatively. Further investigation is conducted to analyze the influence of variable slopes on the flow features of the tsunami-like bore.