【摘要】 本文根据潮波总能量可用许多已知天文潮频能量的总和来表示以及由线性化的浅水方程,推导出能谱的控制方程。使用三节点三角形的有限元法求解控制方程。进而求得各分潮的流速分量,最后线性叠加求得全计算域的水位和流速.实例证明,本模式解题非常有效并取得了良好的成果,与连云港物理模型试验及 ADI 法计算的成果比较,其结果是一致的。更多还原

【Abstract】 This paper presents a spectral model,which is based on the total energy at a given point represented by the summation of a series of tidal amplitudes of known astronomical frequency. The linearized shallow water equations introduce a spectral governing equation,which can be solved by using the finite element me- thod of triangular elements.Velocities are obtained by the mere evaluation of algebraic expressions Finally,tile solution of domain is obtained by linear superposition. The model is extremely efficient and has proved success in some practical problems.The result is fairly agreeable with the results of Lianyun Harbour’ s physical model tests and its ADI method.更多还原