Numerical modeling of 3D solitary wave impact to structure and plunging wave breaker

Document Type : Research Article


1 Mechanical Engineering Department - Malek Ashtar University of Technology

2 Mechanical Engineering Department, Malek-Ashtar University of Technology


The wave impact is the most important force to the marine structures. Breaking waves makes the most severe forces to the marine structure. Due to the turbulence and strong mixing behavior of the breaking waves, its analysis is difficult and complicated. In this paper, first a solitary wave is numerically modeled. Then the propagating of the solitary wave plunging breaker is simulated on the slope beach. The finite volume method and the two-phase VOF model have been implemented for free-surface modeling. The simulation was performed in an unsteady-state. Furthermore the k-w SST turbulence model was applied. The shape of the free surface of water is quantitatively and qualitatively in good agreement with analytical and experimental results. All of the different stages of wave breaking including the beginning, the tip-wave collision to the bed, the jet of water formation and its further breaking, are relatively in good agreement with the experimental tests. Finally, three-dimensional simulations of a solitary wave impact to a rigid column have been performed. These simulations were separately implemented for two states of breaking and without wave breaking. The results showed good agreement with experimental data.


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