多岛屿、汊道复杂地形海区流场影响的数值模拟研究  

A Study of Numerical Modelling about Tidal Currents Field Influence in the Complicated Terrain Region with Many Islands and Tidal Channels

作　　者：矫吉珍[1] 肖成猷[1] 

机构地区：[1]华东师范大学河口海岸国家重点实验室,上海200062

出　　处：《海洋通报》2002年第2期1-10,共10页Marine Science Bulletin

基　　金：国家自然科学基金编号:( 49976024 );上海市科技启明星的资助 项目编号:( 00QG14042 )

摘　　要：复杂地形海区的潮流场特征及工程对其的影响一直是海洋环境研究中比较关注的问题。本文采用正交曲线网格和动边界结合技术,建立了复杂地形海区大范围、局部加密的二维高精度潮流数值模型研, 究分析了工程前后宁波大榭岛码头附近复杂海域大范围潮流场特征和局部特殊地形对其的影响,并 LPG 从动力机制上进行了讨论。结果表明:地形的挑流作用、水流流路分离和多股水流的潮汐动力不均匀等原因,使海区的潮流场结构变得非常复杂,其重要特征是有众多回流区产生。In some complicated topography coastal region, the characteristic of the tidal current field and the tidal current field influences by some engineering project are always much concerned problem. In this study, a finite difference method of curvilinear orthogonal grids is adopted to develop a high resolution 2-D numerical model of large scope and local fine grids mesh in the complicated topography coastal region. The model was applied to the northeast of Daxie island to study the characteristic of its tidal current field and the influence by local special topography, as well as to make a further discussion on its dynamics of mechanism. The result shows that the structure of tidal current field in this kind of coastal region is very complex , with numerous eddy currents generating

关 键 词：潮流场 海洋环境 正交曲线网格 动边界结合技术 动力机制 地形 潮流数值模拟 岸线整治工程 回流 

分 类 号：P731.21[天文地球—海洋科学]