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Numerical Simulation of Beach Profile Changes  

Cheon, Se-Hyeon (Institute of Construction and Environmental Research, Handong Global University)
Ahn, Kyung-Mo (School of Spatial Environment System Engineering, Handong Global University)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.20, no.1, 2008 , pp. 101-109 More about this Journal
Abstract
Several numerical models for predicting beach profile changes have been developed by many researchers. Many of the earlier models are known to simulate the erosional profiles with the formation of offshore bar. However, most of the models don't have proper mechanism to incorporate the recovery process of the eroded profiles after a storm and can not simulate the beach accretion with acceptable accuracy. In order to overcome these shortcomings, we propose a new numerical model which has new features to simulate the accretional phase of beach recovery process after storm including such as redistribution of suspended sand particles near the breaking point. The simulation results of the proposed model were compared with LWT (Large Wave Tank) experiments performed at CRIEPI (Central Research Institute of Electric Power Industry in Japan) and CE (the Us Army Corps of Engineers) and it was shown to have performed better compared to SBEACH (Storm-induced BEAch CHange).
Keywords
offshore bar; equilibrium beach profile; cross-shore sediment transport; Dean number; SBEACH; beach;
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