排水管网非恒定流数值模拟新方法

茅泽育; 赵雪峰; 赵璇; 罗昇

引用本文:	茅泽育,赵雪峰,赵璇,罗昇.排水管网非恒定流数值模拟新方法[J].水利水运工程学报,2007,(2):42-47

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排水管网非恒定流数值模拟新方法
茅泽育¹,赵雪峰¹,赵璇²,罗昇¹
1. 清华大学,水利水电工程系,北京,100084 2. 清华大学,核能与新能源技术研究院,北京,100084

摘要:

提出了数值模拟城市排水管网非恒定流新的计算方法，即采用扩散波模型，将待求水位和流量分为运动波分量和扩散波分量两部分，并先后求解．在处理明满流过渡时，没有采用Preissmann明窄缝近似方法．用原型观测资料验证计算结果表明，计算值与实测值吻合较好．

关键词: 扩散波模型非恒定流明满流排水管网数值计算

DOI：

分类号:TV134.1

基金项目:国家自然科学基金

A new method for simulation of unsteady flow within drainage network

MAO Ze-yu¹,ZHAO Xue-feng¹,ZHAO Xuan²,LUO Sheng¹

1. Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China; 2. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China

Abstract:

A new simulation method using the diffusion wave model is presented to simulate the unsteady flow in urban drainage networks. The unknown water level and discharge are decoupled into kinematic wave and diffusive wave components, and solved respectively. The transition from free flow to pressured flow is treated without help of the Preissmann approximation. Verification of calculated results with prototype data shows that the calculation results agree well with the measured data.

Key words: diffusion wave model unsteady flow free and pressured flow drainage network numerical calculation