摘要
建立了时间二次插值的三角形网格显式差分数学模型 ,从而提高了原三角形网格显式数学模型[1] 的稳定性和精度。使用三角形网格全自动剖分技术进行网格剖分 ,使用“干湿”判别法处理了露滩问题 ,用两套节点关系处理潜堤问题 ,对大范围 (既有细长河道又有大面积海区 )、多岛屿、地形及流态复杂的瓯江口海区的潮流场进行了成功的模拟。并根据模拟结果 ,对瓯江口海区的潮流特征进行全范围的分析介绍。
A second order explicit difference tidal flow mathematical model with triangular grid is set up which can raise the stability and precision of previous triangular grid explicit mathematical model. Employing a new auto triangulation technique to generate triangular mesh, with 'wetting drying' judging method to handle moving boundary problems and by means of two sets of node relations to treat submerged dyke problem, the tidal flow field of the Oujiang Estuary with large sea area,multi islands, complex topography and flow patterns was successfully simulated and verified by observed hydraulic parameters in prototype.According to the simulation results, the characteristics of tidal flow in the Oujiang Estuary are analyzed.
出处
《长江科学院院报》
CSCD
北大核心
2002年第2期19-22,共4页
Journal of Changjiang River Scientific Research Institute
关键词
潮流
数学模型
数值模拟
瓯江口
tidal flow
mathematical model
numerical simulation
the Oujiang Estuary
