基于数值波浪水池的柔性浸没短板流固耦合研究  

Study on Fluid-Structure Interaction for Submerged Flexible Short Plate Based on Numerical Wave Tank

作　　者：杨益钦 朱良生[1] 唐善然 YANG Yiqin;ZHU Liangsheng;TANG Shanran(School of Civil Engineering&Transportation,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]华南理工大学土木与交通学院,广州510640

出　　处：《中国造船》2022年第2期41-51,共11页Shipbuilding of China

基　　金：国家自然科学基金青年基金(12102136);广东省基础与应用基础研究基金(2020A1515110072);广州市科技计划项目(202102021013)。

摘　　要：浸没于水中的柔性板壳可作为水下防波堤、波浪能装置等海洋工程结构的简化模型。论文基于Stokes五阶波浪和人工阻尼消波理论对软件ANSYS Fluent进行二次开发,在构建的数值波浪水池中,对柔性浸没短板的有限元结构模型进行双向流固耦合计算。改变板壳结构刚度、沉没深度等参数,分析短板的水弹性振动和波浪的透射系数。仿真结果表明,短板在特定的板壳结构刚度和沉没深度下会发生共振,并能有效反射波浪。搭建的双向流固耦合计算平台能对复杂的流固耦合现象准确地仿真,为研究柔性浸没短板与波浪相互作用提供可靠的工具。By using the software ANSYS Fluent, this paper developed a numerical wave tank based on Stokes fifth-order wave theory and artificial damping absorber. Two-way coupling between waves and a finite submerged flexible short plate is simulated in the numerical wave tank, and the plate is modeled by finite elements. Hydroelectric vibration of the plate and transmission of incident surface waves over the plate are analyzed with various flexural stiffness and submerged depth. The simulations show a complex dynamic coupling between the plate and waves, and wave-structure resonance is clearly observed. Resonance happens under a specific combination of wave length, stiffness and depth. The two-way wave-structure coupled platform developed in the paper has been demonstrated to accurately simulate interaction between a short flexible submerged plate and waves, providing a reliable research tool for fluid-structure interaction studies.

关 键 词：数值波浪水池 柔性浸没板壳 流固耦合 水弹性 

分 类 号：U661.43[交通运输工程—船舶及航道工程]