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.
出处
《水利水运工程学报》
CSCD
北大核心
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)
关键词
扩散波模型
非恒定流
明满流
排水管网
数值计算
diffusion wave model
unsteady flow
free and pressured flow
drainage network
numerical calculation
