排水管网非恒定流数值模拟新方法  

A new method for simulation of unsteady flow within drainage network

作　　者：茅泽育[1] 赵雪峰[1] 赵璇[2] 罗昇[1] 

机构地区：[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

出　　处：《水利水运工程学报》2007年第2期42-47,共6页Hydro-Science and Engineering

基　　金：国家自然科学基金资助项目(批准号:50378049)

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Pre issm ann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.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.

关 键 词：扩散波模型 非恒定流 明满流 排水管网 数值计算 

分 类 号：TV134.1[水利工程—水力学及河流动力学]