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论文类型：期刊论文
发表时间：2012-04-01
发表刊物：COASTAL ENGINEERING
收录刊物：SCIE、EI、Scopus
卷号：62
页面范围：1-8
ISSN号：0378-3839
关键字：Non-hydrostatic model; Wave breaking; Run-up; Navier-Stokes equations; Multi-layer system
摘要：In this paper, a multi-layer non-hydrostatic model is developed to simulate wave breaking and run-up. The model uses explicit projection method to solve the three dimensional (3D) Navier-Stokes equations (NSE). The nonlinear free surface boundary condition is employed to track the free surface. A momentum conservative scheme is used to discretize the advection terms in momentum equations, which enables the model to efficiently resolve discontinuous flow, involving breaking waves and hydraulic jumps. A new grid arrangement is presented to accurately include the non-hydrostatic pressure effect, which is very important to describe dispersive waves. To capture the moving shoreline, a novel wet-dry algorithm is incorporated in the model. Comparisons between numerical results and analytical or experimental data are presented. It is shown that the proposed model without the use of predefined criteria is capable of accurately simulating both breaking waves and wave run-up in 20 or 3D dimensions. (C) 2011 Elsevier B.V. All rights reserved.