Assessment of coupling conditions in water way intersections
Assessment of coupling conditions in water way intersections
复制标题
水路交叉口耦合条件评估
DOI：
--
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Mohammed Seaïd
中科院分区：
文献类型：
--
作者：
M. Herty;Mohammed Seaïd
我们提出了一个数值评估的耦合条件在T -结水流在明渠。数学模型是建立在明渠流的浅水方程的基础上的。在本工作中，重点描述了运河与运河交叉口的耦合条件。这些耦合条件的准确预测是实现网络中水渠数值模拟的良好性能和可靠性的关键。对于简化几何中的耦合条件，已有几个理论结果。我们工作的目的是在数值上验证不同水流状态下的这些条件。更准确地说，我们考虑了T型交叉口的局部变焦导致运河交叉口的二维流动问题。高阶非振荡方法用于求解控制二维方程，并且水流解在连接区域上是空间平均的。然后，将所得结果与理论结果进行验证和比较。对两种类型的结进行了验证，即1 - to - 2和2 - to - 1情况。版权所有©2012 John Wiley & Sons， Ltd。
We present a numerical assessment of coupling conditions in T‐junction for water flow in open canals. The mathematical model is based on the well‐established shallow water equations for open channel flows. In the present work, the emphasis is given to the description of coupling conditions at canal‐to‐canal intersections. The accurate prediction of these coupling conditions is essential in order to achieve good performance and reliable numerical simulations of water canals in networks. There exist several theoretical results for coupling conditions in a reduced geometry. The purpose of our work is to numerically verify these conditions for different water flow regimes. More precisely, we consider a local zooming of the T‐junction resulting in a two‐dimensional flow problem at the canals intersection. A high‐order non‐oscillatory method is used for solving the governing two‐dimensional equations, and the water flow solutions are space‐averaged over the junction areas. The obtained are thereafter, used for verification and comparison with the theoretical results. Verifications are conducted for two types of junctions, namely the 1‐to‐2 and 2‐to‐1 situations. Copyright © 2012 John Wiley & Sons, Ltd.