摘要
本文利用正交坐标变换解决三维计算域平面复杂的问题，采用垂向无因次坐标解决自由表面未知的问题，提出了一套三维计算模式．通过长江口实测资料的计算验证，表明本模式具有一定的精度与实用性，可用于一些具体水流问题的模拟计算．
A 3-D flow model is established in this paper,and planar orthogonal coordinatetransformation and non-dimensionalized perpendicullar coordinate are introduced to solve the problem of planar complex boundary and free surface unknown. The model isused in the Yangtze-river estuary computation compared with the field test data.The result shows the model has a certain accuracy and practicability,and it can be applied to practical computation.
