流体流过下凹地形的共振流动

Resonant Flow of a Fluid Past a Concave Topography

本文讨论流体流过下凹地形时共振产生非线性毛细重力波．采用摄动方法，导出了一个具负强迫力的KdV方程．采用拟谱方法，对所得方程进行了数值分析，给出了在超临界，亚临界以及精确共振情形的数值结果．

In this paper, the resonant generation of nonlinear capillary-gravity wavesin a fluid system with the effect of surface tension and the concave topographyis examined by using a perturbation method and numerical method.