【摘要】 <正> 边界条件的处理是数值计算中的重要问题之一。在潮波数值计算中,边界条件的处理方法不同,会造成计算结果的重大差异。因此,潮波计算必须选择较好的边界模拟方法。数值结果对实测结果的良好逼近,在开边界附近以及开阔海洋,是比较容易得到的。但在远离开边界的某些边界点,尤其在水浅潮弱的区域,就不容易得到。在渤海潮波计算中我们发现,更多还原

【Abstract】 In this paper,the boundary conditions most in use in the numerical models of the tidal waves are discussed.The normal derivative extrapolation in simulating the boundary at the sand-bank,the computing formulas and the results are given.The influence of the different external lengths on the results of the numerical simulation are also discussed.The method and results given in this paper have been applied and tested in the numerical simulation of the principal semi-diurnal constituents in the Bohai Sea.更多还原