长距离明渠调水工程数值仿真平台研究  

Numerical Simulation Platform Study on Long-Route Canal System

作　　者：郭晓晨[1] 陈文学[1] 吴一红[1] 刘之平[1] 

机构地区：[1]中国水利水电科学研究院水力学研究所,北京100038

出　　处：《南水北调与水利科技》2009年第5期15-19,共5页South-to-North Water Transfers and Water Science & Technology

基　　金："十一五"国家科技支撑计划项目"南水北调中线工程输水能力与冰害防治技术研究"(2006BAB04A12);现代水利创新项目(XDS2007-06)

摘　　要：大型跨流域调水工程,通常具有输水线路长、沿程过水建筑物类型和数量多的特点,建模过程复杂。文章提出的虚拟连接模块的概念,解决了各模块间的连接问题,实现了自适应建模,在此基础上建立了具有自适应建模的、图形化输入和数据库输入相结合的数值仿真平台。该模拟平台可以减少建模错误的发生,提高建模工作效率。鉴于过闸流态的多样性及其流态之间的过渡,给出了堰闸过渡态模拟的处理方法,实现了输水明渠水力过渡过程中水位、流量大幅度变化的无间断连续模拟。模型应用于南水北调中线工程总干渠京石段应急工况的特性研究,分析表明该模型模拟结果与原型观测结果吻合甚好,因此,文章提出的模拟平台能够模拟复杂输水渠道的水力响应过程,可作为南水北调中线工程等跨流域大型明渠输水工程的模拟仿真平台。Trans-basin water diversion canals are usually characterized by long distance, large scale and lots of hydraulic constructions. It is difficult to simulate the unsteady flow in such water-diversion canal system. In the platform, a virtual linked component was presented for connecting lumped components, For simulation the transition flow between gate flow and weir flow, an interpolation method for calculating the discharge of the gate was used. The simulation platform can simulate the unsteady flow of the canal systems under different conditions. To improve the modeling efficiency of the unsteady flow in long-route canal systems and reduce the cost, a simulation platform based on the adaptive modeling and da- tabase is introduced in this paper. The model was applied to simulate the unsteady flow in Beijing to Shijiazhuang section in the Middle Route of the South-to-North Water Diversion Project. The comparison between the simulated results and the measured values shows that the platform can be used in large-scale water diversion canal systems.

关 键 词：图形化建模 自适应建模 孔堰流过渡 数值仿真 水力学模型 

分 类 号：TV133.2[水利工程—水力学及河流动力学] TV68