Numerical Simulation of Random Wave Overtopping of Rubble Mound Breakwater with Armor Units  

作　　者：LI Jing-yuan ZHANG Qing-he LU Yong-jun 

机构地区：[1]State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300072,China [2]State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute,Nanjing 210029,China

出　　处：《China Ocean Engineering》2021年第2期176-185,共10页中国海洋工程（英文版）

基　　金：This study was financially supported by the National Natural Science Foundation of China(Grant Nos.U1906231 and 51520105014);Guangdong Water Conservancy Science and Technology Innovation Project(Grant No.2017-17);the Tianjin Natural Science Foundation of China(Grant No.18JCZDJC40200);the Tianjin Transportation Science and Technology Development Plan Project(Grant No.2020-12).

摘　　要：Based on the open source code OpenFOAM,a three-dimensional model is presented for simulation of the interaction between waves and rubble mound breakwater with armor units.The armor units with their real geometries are depicted through computational grids.The volume-averaged RANS equation and the seepage equation containing nonlinear term are used to describe the percolation in the core and underlayer of the breakwater.Grids independence analysis are carried out,the horizontal and vertical grid size are recommended to take as one-fifteenth of the mean nominal diameter D_(50) of the armor units and one-fifteenth of the wave height respectively.Random wave overtopping of rubble mound breakwater with armor units is simulated through the proposed model.The results show good agreement between the simulated and measured overtopping discharge rates for different types of armor units.The developed numerical model can be used to evaluate the random wave overtopping in design of rubble mound breakwater with artificial armor blocs.

关 键 词：random wave armor units seepage equation overtopping discharges grid independence 

分 类 号：U656.21[交通运输工程—港口、海岸及近海工程]