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A numerical model of beach morphological evolution due to waves and currents in the vicinity of coastal structures

2011; Elsevier BV; Volume: 58; Issue: 9 Linguagem: Inglês

10.1016/j.coastaleng.2011.05.006

1872-7379

Pham Thanh Nam, Magnus Larson, Hans Hanson, Le Hoan,

Aeolian processes and effects

A numerical model was developed of beach morphological evolution in the vicinity of coastal structures. The model includes five sub-models for random wave transformation, surface roller development, nearshore wave-induced currents, sediment transport, and morphological evolution. The model was validated using high-quality data sets obtained during experiments with a T-head groin and a detached breakwater in the basin of the Large-scale Sediment Transport Facility at the Coastal and Hydraulics Laboratory in Vicksburg, Miss, USA. The simulations showed that the model reproduced well the wave conditions, wave-induced currents, and beach morphological evolution in the vicinity of coastal structures. Both salient and tombolo formation behind a T-head groin and a detached breakwater were simulated with good agreement compared to the measurements.