Numerical Simulation of Abnormal Wave Height Change Induced by Excavated Waterway with Boussinesq Equation  

作　　者：Zhang, YG Li, YC 

机构地区：[1]Shanghai Jiao Tong Univ, Dept Mech Engn, Shanghai 200030, Peoples R China [2]Dalian Univ Technol, Dept Civil Engn, Dalian 116024, Peoples R China

出　　处：《China Ocean Engineering》1998年第1期63-72,共10页中国海洋工程（英文版）

摘　　要：A nonlinear numerical model has been set up by use of Boussinesq Equation with finite difference method, and has been applied to the simulation of the abnormal change of wave height induced by excavated waterway. Numerical results demonstrate that the abnormal change of wave height is due to the adding of the reflected wave height induced by excavated waterway to the incident wave height. Because the angle between the incident wave and the axis of the waterway is smaller than the critical angle, the reflected wave produced by the waterway may propagate to the breakwater and may be added with the incident wave, then the abnormal change of wave height before the breakwater may be caused. So the wave reflection caused by the change of water depth cannot be neglected.A nonlinear numerical model has been set up by use of Boussinesq Equation with finite difference method, and has been applied to the simulation of the abnormal change of wave height induced by excavated waterway. Numerical results demonstrate that the abnormal change of wave height is due to the adding of the reflected wave height induced by excavated waterway to the incident wave height. Because the angle between the incident wave and the axis of the waterway is smaller than the critical angle, the reflected wave produced by the waterway may propagate to the breakwater and may be added with the incident wave, then the abnormal change of wave height before the breakwater may be caused. So the wave reflection caused by the change of water depth cannot be neglected.

关 键 词：Boussinesq Equation numerical simulation regular wave excavated waterway wave height 

分 类 号：TV139.2[水利工程—水力学及河流动力学]