Simulation of Wave Breaking Based on NonHydrostatic Equations

Abstract

Abstract: Abstract： A numerical model was developed for simulating wave propagation and breaking in nearshore zone with higher computational efficiency based on SWASH which is a on nonhydrostatic equations model to ensure essential numerical precision. In order to reduce vertical layers, nonhydrostatic equations were switched to nonlinear shallow water equations with hydrostatic approximation while a turbulence model was simultaneously introduced to describe the energy dissipation of breaking waves. The model was verified by experimental data of flume experiments such as wave breaking on a slope bottom, submerged breakwater and a sand bar. These validations show that the model is very effective in reasonably predcting wave breaking location and breaking wave height. This further illustruates that the nonhydrostatic model adopting realatively few vertical layers can be more attractive and competitive in actual engineering appliations.

Key words: Key words： nonhydrostatic equations, wave breaking model, turbulence model, hydrostatic approximation

CLC Number:

TV 139.2

ZOU Guoliang, ZHANG Qinhe, ZHANG Na. Simulation of Wave Breaking Based on NonHydrostatic Equations[J]. Journal of Shanghai Jiao Tong University, 2016, 50(03): 437-442.

References

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