潮汐河口地区的波流相互作用的数学模型

NUMERICAL MODELING OF WAVE AND GURRENT INTERACTION IN THE INLET AREA

在潮汐河口地区,由于地形的变化以及水流和波浪的相互作用,而导致流速场和波场产生变化。本文利用时均的连续方程、动量方程和考虑波浪折射和绕射的波动方程,建立了求解流速场和波面变化的数值模型。根据以往的结果和实验对上述模式进行了验证,取得了较为理想的结果。

This paper investigates the phenomena of wave refraction and diffraction in the slowly varying topography, as well as the current deflection due to wave actions. A numerical model is developed based on depth integrated mean continuity equation and momentum equations, and a 3rd-order wave equation which governs the wave diffraction, refraction and interaction with current. The examples to examine above model are given comparing with the laboratory data or the numerical results of other people. An example simulating the inlet areas hows the interesting velocity field which may be used as a pioneer to further study on the nearshore hydrodynamics and sedimentation.