基于OpenFOAM的波浪作用下海床动力响应  

Numerical simulation for the dynamic response of seabed under waves based on the OpenFOAM

作　　者：陈宝清[1] 张金凤[1] 史小康[1] CHEN Bao-qing;ZHANG Jin-feng;SHI Xiao-kang(State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300350, China)

机构地区：[1]天津大学水利工程安全与仿真国家重点实验室,天津300350

出　　处：《中国港湾建设》2017年第3期1-5,32,共6页China Harbour Engineering

基　　金：国家自然科学基金创新研究群体科学基金(51321065);天津市应用基础及前沿技术研究计划(青年基金项目)(12JCQNJC04100)

摘　　要：基于计算流体力学开源软件OpenFOAM建立了波浪-海床-结构物相互作用的数学模型。其中,数值波浪水槽采用动量源函数造波,求解雷诺平均的N-S方程,VOF方法追踪自由表面;海床动力响应基于Biot固结理论,并结合摩尔-库伦塑性本构模型。首先对波浪作用下海床动力响应问题进行研究,数模结果与实验结果及解析解吻合良好。进一步在数值水槽中添加孔隙介质模型,模拟潜堤周围海床动力响应问题,结果表明本模型可以较好地模拟出考虑结构物影响的海床动力响应过程。We established a numerical model of wave-seabed-structure interaction based on the open source softwareOpenFOAM of computational fluid dynamics.The numerical wave tank is governed by the Reynolds-Averaged Navier-Stokesequations and applied the momentum source function to generate waves.The volume of fluid method is used to track the waterfree-surface.The dynamic response model of seabed is formulated on the basis of Biot's consolidation theory and combined withthe plasticity Mohr-Coulomb constitutive relation.Firstly,the dynamic response of seabed under wave action is investigated,and the results agreed well with the experimental and analytical results.Furthermore,the porous media model was added tosimulate the dynamic response of the seabed around the submerged breakwater.The results show that the model can wellsimulate the dynamic response of the seabed considering the influence of the structure.

关 键 词：波浪作用 结构物 海床 动力响应 OPENFOAM 

分 类 号：U652.21[交通运输工程—港口、海岸及近海工程] P753[交通运输工程—船舶与海洋工程]