Kinematic wave solution of circular channel flow for urban drainage

摘要：

In urban drainage, the circular channel is often used. The kinematic wave theory has been applied to approximate the unsteady flow in sewer by many computer packages for drainage design, e.g. HEC, SWMM and MOUSE among others. In the application of kinematic wave theory, one of key things is the derivation of kinematic wave parameters. This paper considered (a) circular channel with constant Manning roughness coefficient, and (b) circular channel with variable Manning roughness coefficient. For case (b), an equation that can describe the variation of Manning roughness coefficient with flow depth is presented. The examination of the old kinematic wave parameters shows that they do not give good agreement to the true relationships between discharge and flow area. New kinematic wave parameters that give better agreements are recommended to replace the old parameters. Similarly, the time of travel formulas that are based on the new parameters are recommended to replace the formulas that are based on the old parameters, and are used for estimating the time of travel in circular channel subject to a uniform lateral inflow and a constant upstream inflow.

关键词： circular channel kinematic wave lateral flow sewer time of travel urban drainage

作者: Maichun ZHOU Tommy sai wai WONG Yongtong GAO Qihuan CAO

作者单位: College of Water Conservancy and Civil Engineering,South China Agricultural University,Wushan,Tianhe School of Civil and Environmental Engineering,College of Engineering,Nanyang Technological Universit Library,South China Agricultural University,Guangzhou 510642,China

会议类型: 国际会议

会议名称: The Four Conference of Asia Pacific Association of Hydrology and Water Resources(亚太地区水文水资源协会第4届科学大会)

会议地点: 北京

会议语种:英文

页码: 155-161

在线出版日期: 2008-11-03（万方平台首次上网日期，不代表论文的发表时间）