A numerical model for simulation of near-shore waves and wave induced currents using the depth-averaged non-hydrostatic shallow water equations with an improvement of wave energy dissipation

Phung Dang Hieu; Phan Ngoc Vinh

doi:10.15625/1859-3097/20/2/15087

Author affiliations

Authors

Phung Dang Hieu Vietnam Institute of Seas and Islands, Hanoi, Vietnam
Phan Ngoc Vinh Institute of Mechanics, VAST, Vietnam

DOI:

https://doi.org/10.15625/1859-3097/20/2/15087

Keywords:

Waves in surf zone, non-hydrostatic shallow water model, wave breaking dissipation.

Abstract

This study proposes a numerical model based on the depth-integrated non-hydrostatic shallow water equations with an improvement of wave breaking dissipation. Firstly, studies of parameter sensitivity were carried out using the proposed numerical model for simulation of wave breaking to understand the effects of the parameters of the breaking model on wave height distribution. The simulated results of wave height near the breaking point were very sensitive to the time duration parameter of wave breaking. The best value of the onset breaking parameter is around 0.3 for the non-hydrostatic shallow water model in the simulation of wave breaking. The numerical results agreed well with the published experimental data, which confirmed the applicability of the present model to the simulation of waves in near-shore areas.

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