摘要
建立了考虑非静水压强影响,采用平面上非结构化网格、垂向分层动网格方法的三维水流计算模型,并应用到长江流域莱家铺河段。模拟计算所得的水深,垂向流速分布,平均流速均与实测数据吻合较好,流速沿程分布与实测基本一致,验证了计算结果的合理性与准确性,并反映了三维数值模拟的物理量守恒性,对三维水流运动特性分析研究有着重要的意义。
The three-dimensional flow calculation model is set up,which considers the non-hydrostatic pressure effects and uses the method of unstructured grid plane and vertical layered dynamic meshes,and applied to Laijiapu reach of the Yangtze River.The depth of the water,distribution of the vertical velocity and average velocity of the flow calculated by this model all coincide with the experimental data,and the distribution of flow velocity is also consistent with the measured data,which have proved the rationality and accuracy of the results and reflected the physical quantity conservativeness of three-dimensional numerical simulation.Besides,it has an important significance to the characteristic analysis on three-dimensional flow movement.
出处
《水利与建筑工程学报》
2013年第4期153-156,共4页
Journal of Water Resources and Architectural Engineering
关键词
河道三维水流数学模型
N-S方程
非结构化网格
有限体积法
three-dimensional river flow mathematical model
N-S equation
unstructured mesh
finite volume method
