内孤立波过山脊地形演化实验研究

通过模型实验,研究了下沉型内孤立波通过山脊地形演化特征。实验以三角形障碍物模拟海底山脊地形,采用两种密度的分层水,对上层流体和下层流体的高度比、密度等进行了量化处理。实验研究表明:KdV理论波形可较好模拟本次实验内孤立波波形,但随着内孤立波振幅的增大,误差增加;在内孤立波与障碍物微量作用、中度作用和破波作用三种程度的相互作用中,内孤立波过障碍物具有不同的波形变化和主波能量衰减率。

An elementary research on the evolution of internal solitary wave crossing ridge topography

The evolution of internal solitary wave which is sink type encountering ridge topography is studied in this paper. The triangle obstacle is used to simulate the ridge in the sea. The height and density of upper fluid and lower fluid are quantitative. Lab studies show that KdV theoretical wave shape is similar to experimental wave shape, but the error increases with increasing wave amplitude. In the three kinds of interaction: weak interaction, moderate interaction and wave breaking between internal solitary waves and obstacles, internal solitary wave has different wave shape and main energy attenuation rate.