Numerical study of resonance induced by wave action on multiple rectangular boxes with narrow gaps

作     者：NING Dezhi SU Xiaojie ZHAO Ming TENG Bin 

作者机构：State Key Laboratory of Coastal and Offshore EngineeringDalian University of Technology School of ComputingEngineering and MathematicsUniversity of Western Sydney 

出 版 物：《Acta Oceanologica Sinica》 (海洋学报（英文版）)

年 卷 期：2015年第34卷第5期

页      面：92-102页

核心收录：

学科分类：07[理学] 0707[理学-海洋科学] 

基　　金：The National Natural Science Foundation of China under contract Nos 51179028,51222902 and 51221961 the New Century Excellent Talents in University of China under contract No.NCET-13-0076 

主　　题：narrow gap resonance higher-order boundary element nonlinear numerical wave flume 

摘      要：By introducing a source term into the Laplace equation, a two-dimensional fully nonlinear time-domain numerical wave flume （NWF） is developed to investigate the resonance induced by the interaction between waves and multiple objects with narrow gaps. In the numerical model, the fully nonlinear kinematic and dynamic boundary conditions are satisfied on the instantaneous free surface and the constant artificial damping is employed in the gaps to approximate the viscous dissipation due to vortex motion and flow separation. The computational domain is discretized using a higher-order boundary element method （HOBEM）. The proposed model is firstly validated against the published experimental data and numerical results of the wave height in the narrow gap between two boxes, the wave heights in the two gaps of three boxes, and wave loads on the boxes. Then, the extensive numerical experiments are performed to study the influences of the number of the boxes and the gap spacing on the resonant frequency, reflected and transmitted wave heights and wave loads on the boxes.