Wave breaking over sloping beaches using a coupled boundary integral-level set method

[摘要] We present a numerical method for tracking breaking waves over sloping beaches. We use a fully non-linear potential model for in-compressible, irrotational and inviscid flow, and consider the effects of beach topography on breaking waves. The algorithm uses a Boundary Element Method (BEM) to compute the velocity at the interface, coupled to a Narrow Band Level Set Method to track the evolving air/water interface, and an associated extension equation to update the velocity potential both on and off the interface. The formulation of the algorithm is applicable to two and three dimensional breaking waves; in this paper, we concentrate on two-dimensional results showing wave breaking and rollup, and perform numerical convergence studies and comparison with previous techniques.

[发布日期] 2003-12-08 [发布机构] Lawrence Berkeley National Laboratory

[关键词] Topography;99 General And Miscellaneous//Mathematics, Computing, And Information Science;Ideal Flow;Algorithms;Velocity