NUMERICAL SIMULATION OF OVERTOPPING AGAINST A NEW SEAWALL PROFILE IN REGULAR WAVES
Based on the RANS equations and the Reynolds Stress turbulence model, a numerical wave flume is developed in the frame of the finite volume solver. Numerical simulation of progressive waves and standing waves is carried out to validate the performance of numerical wave generation and wave absorbing modules not only for linear waves but also for large amplitude waves. It indicates that the numerical wave flume is effective for simulation of propagation of nonlinear waves. Then wave run-up and overtopping over a simple seawall are simulated, and the results show good agreement with other numerical results and experimental data available. It is convinced that this numerical wave flume is promising to predict propagation, deformation, breaking, run-up and overtopping of water waves well. In order to further study the optimization of seawall, numerical simulations on a seawall of the arc crown are performed to minimize overtopping flux and endurable hydrodynamic loads. All cases simulated reveal the influences of cross-section, toe level and top level of crown on overtopping and stabilization of seawall. Furthermore, wind effect on wave overtopping is carried out for different shapes of crown wall such as vertical wall, vertical wall with o 45 parapet and arc crown. In the present of winds with different speeds, velocity fields and overtopping discharges are presented. Numerical results show that the effects of wind speed on the overtopping flux for vertical seawalls is significant, while it is weak for the seawall of arc crown wall.
Xiaoyu GUO Benlong WANG Hua LIU
Department of Engineering Mechanics, Shanghai Jiao Tong University, Shanghai 200030,China Department Engineering Mechanics, Shanghai Jiao Tong University, Shanghai 200030,China Department Engineering Mechanics, Shanghai Jiao Tong University, Shanghai 200030, China
国际会议
第四届亚太地区海岸会议(the Fourth International Conference on Asian and Pacific Coasts)
南京
英文
2007-09-21（万方平台首次上网日期，不代表论文的发表时间）