Hydrodynamics of a dual-module pontoon-net floating breakwater system:Numerical simulations and prototype tests

作     者：Yong Cheng Chun-yan Ji Xue-kang Gu Fa-liHuo Jie Cui Zhi-Ming Yuan Yong Cheng;Chun-yan Ji;Xue-kang Gu;Fa-li Huo;Jie Cui;Zhi-Ming Yuan

作者机构：School of Naval Architecture and Ocean EngineeringJiangsu University of Science and TechnologyZhenjiang 212003China China ship Scientific Research CenterWuxi 214082China Department of Naval ArchitectureOcean and Marine EngineeringUniversity of StrathclydeGlasgowUK 

出 版 物：《Journal of Hydrodynamics》 (水动力学研究与进展B辑（英文版）)

年 卷 期：2021年第33卷第5期

页      面：915-927页

核心收录：

学科分类：080103[工学-流体力学] 08[工学] 080104[工学-工程力学] 081502[工学-水力学及河流动力学] 0815[工学-水利工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.52025112,51861130358 and 52111530137) supported by the State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University(Grant No.1905) the Newton Advanced Fellowships(Grant No.NAF\R1\180304)by the Royal Society 

主　　题：Floating breakwater fully nonlinear simulations on-site tests flexible net wave attenuation moving-grid technique 

摘      要：Floating breakwaters with a mooring system have been widely applied to protect marine infrastructures(e.g.,artificial beach or island,aquaculture farm or marine vessels in harbors)from being destroyed by severe *** this paper,an innovative cylindrical dual pontoon-net floating breakwater was developed to enhance the wave attenuation *** dual-module floating breakwater system was constructed as the prototype for on-site testing.A fully nonlinear time-domain model based on the coupled iterative solutions of the fluid integral equation and the pontoon-net dynamic equations was proposed to simulate the interactions between waves and the floating breakwater *** flow field around the nets was simulated by introducing a porous-media model with Darcy’s law,while the deformation of the flexible nets was solved by using the lumped mass *** instantaneous free surface was captured using the mixed Eulerian-Lagrangian(MEL)approach which employs an improved moving-grid technique based on the spring analysis to re-mesh the instantaneous water surface and the body wetted ***-site tests were also conducted to evaluate wave transmission performance of the floating breakwater system and to validate the numerical *** comparisons show that the numerical solutions are in good agreement with the measured *** effects of incident wave direction,wave period,wave height,net height,net number and net porosity on the hydrodynamic performance of the floating breakwater system were emphatically examined.