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本文讨论一种新的模拟系统,叫做 CYTHERE 3D。这种新模式将完整的二维和三维浅水波动方程耦合在一起,分别用现有的 CYTHERE ESI 和 ODYSSEE求解。采用分裂算子法,从而使联结容易实现。但是二维和三维的底摩擦动量损失的表达式不同,造成了一些困难。CYTHERE 3D 包括 I.R.G.(局部加密网格)系统,从而使在特定区块内能进行三维计算,计算结果能明显显示出三维的趋势。计算精度和所需经费也都令人满意。
This article discusses a new simulation system called CYTHERE 3D. This new model couples the complete two-dimensional and three-dimensional shallow-water wave equations and is solved using the existing CYTHERE ESI and ODYSSEE, respectively. Using split operator method, so that the connection easy to achieve. However, the expressions of the two-dimensional and three-dimensional friction losses at the bottom friction are different, causing some difficulties. CYTHERE 3D includes the I.R.G. (Local Encryption Grid) system, which allows three-dimensional calculations to be performed within a particular block, with the result clearly showing a three-dimensional trend. The calculation accuracy and requirements are also satisfactory.