城市排水管网明满过渡流模型的研究及应用  

Study and Application of Free-surface-pressurized Flow Mathematical Model for Urban Drainage Networks

作　　者：冯良记[1] 张明亮[1] 

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024

出　　处：《中国给水排水》2009年第23期131-134,137,共5页China Water & Wastewater

基　　金：国家重点基础研究发展计划(973)项目(2005CB724202);国家自然科学基金重点资助项目(50839001)

摘　　要：通过引入Preissmann窄缝假定,采用统一的控制方程组模拟排水管网无压和有压流,实现了排水管网内明满过渡流的同时模拟。利用Preissmann四点加权隐格式对所建方程组进行离散,并采用"管道—汊点—管道"的三级联解法对其进行求解。通过对环状管网明满过渡流和长沙雅华小区的雨水管网进行模拟计算,应用文献资料或实测资料进行验证分析,可以看出模拟结果和文献的计算值及实测值吻合较好,表明所建模型可以简洁有效地对排水管网明满过渡流进行模拟,为排水管网的设计和管理提供了一定的理论支持,具有实际应用价值。The model for pressure flow and free surface flow in the drainage networks was built by the uniform governing equations and Preissmann fictitious slot. The Preissmann implicit scheme was used to discretize the equations,and the "sewer-junction-sewer" method was applied to resolve the equations. The model was applied to simulate looped drainage networks and the Yahua residential area drainage system in Changsha. The calculated results agree well with the available data from literature and the measured data. ...

关 键 词：城市排水管网 明满过渡流模型 数值模拟 Preissmann窄缝 

分 类 号：TU992.2[建筑科学—市政工程]