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A platform for research: civil engineering, architecture and urbanism
Prediction of shoreline change behind detached breakwater
Abstract A simple numerical model predicting the change of shoreline to be induced by the construction of detached breakwater is developed in this paper. The developed numerical model is first verified by comparison with the analytical solution of constant angle model. In comparison, it is found that the constant angle model has some problems. The difference of sediment volume between erosion and deposition becomes large as the diffracted wave angle is increasing, and the maximum erosion is always occurred at the same point regardless of the variations of wave angle. These problems can be overcome by considering the wave angle inside shadowed zone to be varied linearly due to the geometry of detached breakwater. From many numerical experiments, it is concluded that the shoreline change is very dependent on the geometry of detached breakwater. i.e., the nearer detached breakwater is constructed to the coastline, the more shoreline is changed. In particular, the equilibrium shoreline and the influence distance with respect to the geometry of detached breakwater under the given condition are calculated by the developed numerical model, which may be usefull for the practical purpose.
Prediction of shoreline change behind detached breakwater
Abstract A simple numerical model predicting the change of shoreline to be induced by the construction of detached breakwater is developed in this paper. The developed numerical model is first verified by comparison with the analytical solution of constant angle model. In comparison, it is found that the constant angle model has some problems. The difference of sediment volume between erosion and deposition becomes large as the diffracted wave angle is increasing, and the maximum erosion is always occurred at the same point regardless of the variations of wave angle. These problems can be overcome by considering the wave angle inside shadowed zone to be varied linearly due to the geometry of detached breakwater. From many numerical experiments, it is concluded that the shoreline change is very dependent on the geometry of detached breakwater. i.e., the nearer detached breakwater is constructed to the coastline, the more shoreline is changed. In particular, the equilibrium shoreline and the influence distance with respect to the geometry of detached breakwater under the given condition are calculated by the developed numerical model, which may be usefull for the practical purpose.
Prediction of shoreline change behind detached breakwater
Lee, Cheol-Eung (author)
KSCE Journal of Civil Engineering ; 2 ; 175-186
1998-06-01
12 pages
Article (Journal)
Electronic Resource
English
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