Nonlinear Simulation of Focused Wave Group Action on a Truncated Surface-Piercing Structure  

聚焦波群对出水截断结构作用的非线性数值模拟（英文）

作　　者：Dezhi Ning Xiang Li Chongwei Zhang 

机构地区：[1]State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China

出　　处：《Journal of Marine Science and Application》2018年第3期362-370,共9页船舶与海洋工程学报（英文版）

基　　金：the National Key R&D Program of China (Grant No.2016YFE0200100);the National Natural Science Foundation of China (Nos.51709038,and 51739010);the Fundamental Research Funds for the Central Universities (No.DUT16RC(3)113).

摘　　要：In this study, we numerically investigated the nonlinear focused wave group action on a truncated surface-piercing structure, and developed a two-dimensional fully nonlinear numerical tank using the higher-order boundary element method. We determined the amplitude of the wave components of the focused wave group based on the JONSWAP wave spectrum. We discuss the effects of the presence of a surface-piercing structure on the characteristics of the focused wave group and find that the location of the structure does not evidently change the focal location or focal time of the focused wave group. The largest amplitudes of the run-up and horizontal force on the structure occur when the front surface of the structure is at the focal location. The critical draught and breadth of the structure occur when the wave run-up reaches its maximum along the structure.In this study, we numerically investigated the nonlinear focused wave group action on a truncated surface-piercing structure, and developed a two-dimensional fully nonlinear numerical tank using the higher-order boundary element method. We determined the amplitude of the wave components of the focused wave group based on the JONSWAP wave spectrum. We discuss the effects of the presence of a surface-piercing structure on the characteristics of the focused wave group and find that the location of the structure does not evidently change the focal location or focal time of the focused wave group. The largest amplitudes of the run-up and horizontal force on the structure occur when the front surface of the structure is at the focal location. The critical draught and breadth of the structure occur when the wave run-up reaches its maximum along the structure.

关 键 词：FOCUSED wave Fully nonlinear Numerical wavetank FLOATING BODY BOUNDARY element method 

分 类 号：T[一般工业技术]