【作者】 王悦； 吴德星； 林霄沛；

【Author】 Wang Yue Wu De-xing Lin Xiao-pei (Physical Ocean Laboratory,China Ocean University Physical Ocean Institute,Qingdao,266003,China)

【机构】 中国海洋大学物理海洋实验室物理海洋研究所；

【摘要】 本文针对渤海湾的潮汐潮流高分辨率数值模拟研究,探讨直接选取湾口为开边界通过水位驱动模式和利用嵌套模式通过流速驱动下的渤海湾潮致余流的异同,分析开边界的选取对渤海湾潮致余流模拟的影响。结果表明,在外海余流对湾内有重要影响情况下,采用水位调和常数作为开边界条件直接在湾口驱动进行模拟,得到的潮致余流与实际情况差别较大。而选用嵌套方法进行模拟,可以大大减弱开边界条件的影响,得到较为真实可靠的结果。更多还原

【Abstract】 The study of tidal current in Bohai bay by high resolution numerical simulation is presented in this paper. In the study, the effect of selecting the open boundary conditions on the simulation of tidal current in Bohai bay is analyzed by taking directly the bay mouth as the open boundary and discussing the similarities and differences of the tidal current in Bohai bay driven by water elevation and by current speed using the embedded method. The results show that under the condition that the residual current in the outer sea has important influence on the current in the bay, the simulation by use of the harmonic constants of the water elevation as the boundary condition at the bay mouth to drive the tidal current in the bay will give the results much different from reality; while the simulation by use of the embedded method with current speed as the boundary condition can greatly reduce the effect of the open boundary condition and lead to better and reliable results.更多还原