摘要
根据实测资料对温州港大小门岛港区深水航道海区的三维潮流特征进行了分析。针对工程海区岸线不规则、地形复杂、岛屿众多、存在动边界等特点,使用垂向σ坐标变换技术,建立了基于不规则三角形网格的三维潮流数学模型,提出了三角形网格三维潮流数学模型处理动边界的方法。使用现场资料对模型进行了验证,潮位、不同水层的流速和流向均与实测资料吻合良好。在模型验证的基础上,对温州港深水航道工程实施后的三维流场进行了模拟,对表、中、底层流速流向的变化进行了分析,对航道表层最大横流进行了计算。建立的三维模型非常适合于复杂河口海岸地区的三维潮流场模拟。
An an and Xiaomen Islands h alysis is conducted on the 3D tidal current characteristics of deepwater channels in Damen arbor areas of Wenzhou Port according to the measured data. For the characteristics of irregular coastline, complex terrain, numerous islands, moving boundary and other characteristics of the sea area for projects, the vertical σ coordinate transformation technology is adopted to establish the mathematical model for three-dimensional tidal current based on irregular triangle meshes, and thus proposing a method for dealing with moving boundary by means of the mathematic model for triangular-mesh 3D tidal current. The model is validated with in-situ data and shows that the tidal level, flow speed and direction at different water layers are in good agreement with the measured data. Based on the model validation, the 3D current field is simulated after construction of deep-water channel project at Wenzhou port, the changes in flow speed and direction of surface, middle and bottom water are analyzed, and the maximum cross-flow of channel surface are calculated. The three- dimensional model established is fully applicable to 3D tidal current field simulation for complex coastal areas at the river estuary.
出处
《水运工程》
北大核心
2010年第1期86-93,共8页
Port & Waterway Engineering
基金
天津市应用基础及前沿技术研究计划(08JCZDZT00200)
关键词
深水航道
三维潮流
数学模型
数值模拟
三角形网格
σ坐标变换
deep-water channel
3D tidal current
mathematic model
numerical simulation
triangular mesh
σ coordinate transformation
