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Structural Engineering and Mechanics Volume 53, Number 3, February10 2015 , pages 393-410 DOI: https://doi.org/10.12989/sem.2015.53.3.393 |
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Numerical simulations of interactions between solitary waves and elastic seawalls on rubble mound breakwaters |
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Yun-Feng Lou, Chuan Luo and Xian-Long Jin
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| Abstract | ||
| Two dimensional numerical models and physical models have been developed to study the highly nonlinear interactions between waves and breakwaters, but several of these models consider the effects of the structural dynamic responses and the shape of the breakwater axis on the wave pressures. In this study, a multi-material Arbitrary Lagrangian Eulerian (ALE) method is developed to simulate the nonlinear interactions between nonlinear waves and elastic seawalls on a coastal rubble mound breakwater, and is validated experimentally. In the experiment, a solitary wave is generated and used with a physical breakwater model. The wave impact is validated computationally using a breakwater - flume coupling model that replicates the physical model. The computational results, including those for the wave pressure and the water-on-deck, are in good agreement with the experimental results. A local breakwater model is used to discuss the effects of the structural dynamic response and different design parameters of the breakwater on wave loads, together with pressure distribution up the seawall. A large-scale breakwater model is used to numerically study the large-scale wave impact problem and the horizontal distribution of the wave pressures on the seawalls. | ||
| Key Words | ||
| wave impact; dynamic response; multi-material ALE; elastic seawalls; breakwater | ||
| Address | ||
| Yun-Feng Lou, Chuan Luo and Xian-Long Jin: State Key Laboratory of Mechanical System and Vibration, Shanghai Jiaotong University, 800 Dongchuan RD, Shanghai 200240, People\'s Republic of China | ||