摘要
本文对差分模型的网格嵌套技术作了介绍，提出流速梯度项ｕ／ｓ是不可忽视的边界控制条件，并给出了采用线性插值获取ｕ／ｓ值的处理方法，通过实际算例证明网格嵌套技术在实际工程潮流计算中的作用。
The item u / s is an important condition in computation. In this paper, the linear interpolation method to obtain the value of u / s is introduced. Through a practical example, this method is proved to be an effective tool in tidal flow numerical computation.
