【作者】 姜国强； 陶建华； 槐文信；

【Author】 Jiang Guo-qiang Tao Jian-hua Huai Wen-xin (School of Mechanical Engineering Tianjin University, Tianjin 300072,China; College of Water Resources and Hydropower Wuhan University, Wuhan 430072,China)

【机构】 天津大学机械工程学院； 武汉大学水利水电学院；

【摘要】 本文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潮流数学模型,并采用干湿判别动边界技术处理潮滩问题。数值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,最后,采用三个算例验证了本文模型及其混合有限分析解法模拟潮流、风生流及处理潮滩动边界问题的有效性和正确性。更多还原

【Abstract】 In this paper, Based on the non-linear Navier-Stokes Equation with a free surface. A three-dimensional mathematical model of coastal sea has been deduced throng transformation of sigma, flood and ebb method is combined to deal with the periodical flooding and ebbing of a beach due to tidal excursion. The hybrid finite analytic method were applied to numerically simulate the flow characteristics, which possesses the advantage of auto-upwind, higher accuracy and good stability. At last, the three cases have been used to validate the efficiency and exactness of model about to tidal flow, wind driven circulation and flooding and ebbing of a beach.更多还原