摘要
天然河道水流、泥沙运动在空间上属三维问题,故提出一种三维明渠水流数学模型,将该模型应用到黄河贵德水文站下游某河段,模拟的流速、水位与实测资料吻合较好;流量沿程分布结果表明模型具有良好的物理量守恒性;给出的流速垂向分布、紊动能量等参数亦是合理的,为河道三维水流结构分析提供了依据。
Flows and sediment movements in natural open channels are characterized by 3D variation. Thus a 3-D numerical open channel flow model is proposed. A downstream reach of the Guide Hydrology station of the Yellow River was modeled by the numerical model. The simulated results of velocity and water surface elevation agree very well with the measured data. The calculated results of discharge at different cross sections show good identity, indicating that the model is well in conservation of physical quantities. The calculated vertical profiles of the velocity and the turbulence energy are all reasonable and can be considered as the basis of the analysis for 3-D river flow structure.
出处
《港工技术》
北大核心
2008年第1期1-4,共4页
Port Engineering Technology
关键词
三维
河道水流数学模型
无结构三角网格
有限体积法
3-D
numerical open channel flow model
unstructured triangular grid
finite volume method
