摘要
本文采用物理模型和平面二维数学模型结合(即复合模型)的手段对平原串流河段的水流运动进行研究,即首先建立整个大范围串流区水流运动的数学模型,通过数学模型的计算成果得到工程附近局部区域的横向边界及水流条件,然后建立局部区域物理模型,并以北汝河片串流区为例,建立了北汝河片串流区的复合模型,对南水北调穿河工程不同方案实施前后工程附近的水位及流速变化进行了对比研究,研究结果表明复合模型能够较好地描述串流区内的水流运动特性.
A compound model which includes a physical model and a 2D depth-averaged mathematical model was suggested for the simulation of furcation-conflux flow in plain rivers. In the simulation, a mathematical model was firstly built in the whole region affected by a project. The simulation results by the mathematical model are used to determine the boundary of the physical model in local region near a project, and the characteristics of the flow can be studied by the physical model in the local region. The performance of furcation-conflux flow in BeiRu River was employed for verification. The influence of the Beiru River cross engineering in South to North Water Transfer Project on the furcation-conflux flow was studied based on the compound model suggested.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2008年第1期67-72,共6页
Chinese Journal of Hydrodynamics
关键词
串流
复合模型
北汝河
furcation-conflux flow, compound model, Beiru River
