Hydroelastic Investigation on A Pile Breakwater Integrated with A Flexible Tail for Long-Wave Attenuation

作     者：ZHANG Chong-wei ZHUANG Qian-ze LI Jin-xuan HUANG Luo-feng NING De-zhi ZHANG Chong-wei;ZHUANG Qian-ze;LI Jin-xuan;HUANG Luo-feng;NING De-zhi

作者机构：State Key Laboratory of Coastal and Offshore EngineeringDalian University of TechnologyDalian 116024China School of WaterEnergy and EnvironmentCranfield UniversityCranfield MK430ALUnited Kingdom 

出 版 物：《China Ocean Engineering》 (中国海洋工程（英文版）)

年 卷 期：2022年第36卷第5期

页      面：667-681页

核心收录：

学科分类：081505[工学-港口、海岸及近海工程] 07[理学] 0707[理学-海洋科学] 08[工学] 0815[工学-水利工程] 0824[工学-船舶与海洋工程] 0814[工学-土木工程] 082401[工学-船舶与海洋结构物设计制造] 

基　　金：financially supported by the National Natural Science Foundation of China(Grant No.51739010) the Natural Science Foundation of Liaoning Province(Grant No.2021-MS-122) the Special Project of Guangdong Science and Technology Department(Grant No.2021A05227) the Dalian Science and Technology Project(Grant No.2020RQ004) the Fundamental Research Funds for the Central Universities(Grant No.DUT22LAB128) 

主　　题：wave attenuator pile breakwater OpenFOAM fluid-structure interaction wave transmission coastal protection 

摘      要：A novel concept of wave attenuator is proposed for the defense of long waves,through integrating a flexible tail to the lee-side surface of a pile *** flexible tail works as a floating blanket made up of hinged blocks,whose scale and stiffness can be easily adjusted.A two-phase-flow numerical model is established based on the open-source computational fluid dynamics(CFD)code OpenFOAM to investigate its wave attenuation *** Navier−Stokes equations are solved in the fluid domain,where an additional computational solid mechanics(CSM)solver is embedded to describe the elastic deformation of the floating *** coupling of fluid dynamics and structural mechanics is solved in a full manner to allow assess of wave variation along the deforming *** accuracy of the numerical model is validated through comparison with experimental *** of the flexible tail on performance of the pile breakwater are investigated *** behaviours of the tail are examined,and characteristics of its natural frequency are *** safety reasons,the wave loads impacting on the main body of the pile breakwater and the stress distribution over the tail are specially *** is found that both the length and stiffness of the tail can affect the wave-attenuation performance of the breakwater.A proper choice of the length and stiffness of the tail can greatly improve the long-wave defending capability of the pile *** maximum stress over the flexible tail can be restrained through optimising the deformation and stiffness of the tail.