Journal of Shanghai Jiao Tong University ›› 2016, Vol. 50 ›› Issue (03): 437-442.

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Simulation of Wave Breaking Based on NonHydrostatic Equations

ZOU Guoliang1,2,ZHANG Qinhe1,ZHANG Na3   

  1. (1. State Key Laoratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China; 2. Nanjing Hydrulic Research Institute, Nanjing 210024, China; 3. School of Civil Engineering, Tianjin Chengjian University, Tianjin 300384, China)
  • Received:2015-03-03 Online:2016-03-28 Published:2016-03-28

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

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