摘要
文章以具有自由表面的三维非线性Navier-Stokes方程组为基本控制方程,垂向采用σ坐标变换后得到三维浅海湍流数学模型。数值模拟求解方法采用具有自动迎风、精度高及稳定性好的混合有限分析法求解,最后,以渤海湾潮流模拟算例验证了文中模型及其混合有限分析解法模拟潮流的正确性和应用于工程实际问题的适用性。
Based on the non-linear Navier-Stokes Equation with a free surface, a three-dimensional turbulent mathematical model of coastal sea has been deduced throng transformation of sigma. The hybrid finite analytic method was applied to numerically simulate the flow characteristics, which possesses the advantage of auto-upwind, higher accuracy and good stability. At last, the tidal flow of Bohai Bay cases have been used to validate the efficiency and exactness of model about to tidal flow.
出处
《海洋技术》
北大核心
2010年第1期60-64,共5页
Ocean Technology
基金
国家科技支撑计划课题(2006BAK01A14)
中央级公益性科研院所基本科研业务专项-珠江河口生态动力学过程和数值模拟技术研究(20080112)
关键词
三维
湍流数学模型
混合有限分析解法
σ坐标变换
three-dimensional
turbulent mathematical model
hybrid finite analytic method
transformation of sigma
