NUMERICAL SIMULATION OF TWO-DIMENSIONAL OVERTOPPING AGAINST SEAWALLS ARMORED WITH ARTIFICIAL UNITS IN REGULAR WAVES

作     者：LU Yong-jin LIU Hua WU Wei ZHANG Jiu-shan LU Yong-jin School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200030, China Shanghai Hydraulic Engineering Design and Research Institute, Shanghai 200063, China LIU Hua, WU Wei, ZHANG Jiu-shan School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200030, China,

作者机构：School of Naval Architecture Ocean and Civil Engineering Shanghai Jiaotong University Shanghai 200030 China Shanghai Hydraulic Engineering Design and Research Institute Shanghai 200063 China School of Naval Architecture Ocean and Civil Engineering Shanghai Jiaotong University Shanghai 200030China 

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

年 卷 期：2007年第19卷第3期

页      面：322-329页

核心收录：

学科分类：07[理学] 0707[理学-海洋科学] 

基　　金：Project supported by the National Natural Science Foundation of China (Grant No.10572093) the Doctorial Program Foundation of MOE of China(Grant No. 20060248046) 

主　　题：porous media overtopping seawall armored units 2-D numerical wave flume regular waves 

摘      要：A new mathematical model for the overtopping against seawalls armored with artificial units in regular waves was established. The 2-D numerical wave flume, based on the Reynolds Averaged Navier-Stokes （RANS） equations and the standard κ-ε turbulence model, was developed to simulate the turbulent flows with the free surface, in which the Volume Of Fluid （VOF） method was used to handle the large deformation of the free surface and the relaxation approach of combined wave generation and absorbing was implemented. In order to consider the effects of energy dissipation due to the armors on a slope seawall, a porous media model was proposed and implemented in the numerical wave flume. A series of physical model experiments were carried out in the same condition of the numerical simulation to determine the drag coefficient in the porous media model in terms of the overtopping discharge. Compared the computational value of overtopping over the seawall with the experimental data, the values of the effective drag coefficient was calibrated for the layers of blocks at different locations along the seawalls.