A numerical model of beach morphological evolution due to waves and currents in the vicinity of coastal structures |
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Authors: | Pham Thanh Nam Magnus Larson Hans Hanson Le Xuan Hoan |
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Affiliation: | 1. Dept. of Water Resources Engineering, Lund University, Box 118, SE-22100 Lund, Sweden;2. Center for Marine Environment, Research, Survey, and Consultation, Institute of Mechanics, Vietnamese Academy of Science and Technology, 264 Doi Can, Hanoi, Vietnam |
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Abstract: | 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. |
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Keywords: | Morphodynamics Random waves Wave-induced currents Surface roller Sediment transport Coastal structures |
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