Based on similarity theory of the physical model, the similarity condition of the current movement in the tidal estuary was deduced from the 2D shallow water equations.
基于河工模型的相似理论，从二维浅水方程推导出潮汐河口水流运动的相似条件。
In this paper, a differential equation of describing the lateral distribution of depth averaged velocity is obtained by simplifying 2d shallow water equations of open channel flow.
通过简化宽浅明渠二维水流运动方程，得到垂线平均流速在横向变化的微分方程序。
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