海港工程疏浚对波浪传播的影响

针对海港工程疏浚边界处大角度入射波浪的显著折射和类似"全反射"现象,及其可能对航道、防波堤及港内不同位置产生的不利影响,采用Boussinesq方程建立典型数学模型,并对相关控制性试验要素进行无量纲处理,试验得出不同条件下的波浪场分布及各要素的影响规律。结果显示,各类影响要素中,入射波高-水深比、海底坡度、入射角对最大波高值及波能聚集位置的影响相对显著。

Influences of harbor dredging on wave propagation

Significant effect of refraction and similar total internal reflection occurs on harbor dredging border when the angle of incidence of wave is large,which may affect navigation channel,breakwater and different position in harbor area.We use the Boussinesq equation to establish a typical numerical model of the process,and nondimensionalize the relevant controlling parameters.The simulation obtains the wave distribution under different conditions,and derives the regular pattern of the effects of different parameters.The results show that among various influencing parameters,the ratio of incident wave height and water depth,the bottom slope and the angle of incidence have the relatively significant impact on the maximum wave height and distribution of wave energy accumulation.