Simulation of Transport Channel in China's Middle Route South-to-North Water Transfer Project  

作　　者：方神光 魏加华 吴保生 尚毅梓 

机构地区：[1]State Key Laboratory of Hydroscience and Engineering, Tsinghua University,Beijing 100084, China [2]Pearl River Hydraulic Research Institute,Guangzhou 510611, China

出　　处：《Tsinghua Science and Technology》2009年第3期367-377,共11页清华大学学报（自然科学版（英文版）

基　　金：Supported by China Postdoctoral Science Foundation (No. 20060390078)

摘　　要：The unsteady flow in the Middle Route South-to-North Water Transfer Channel was simulated numerically using an implicit solution procedure for the Saint Venant equations. An equivalent roughness was used to simulate the effect of many transfer structures on the water levels in the main channel. Various gate operating and control methods were analyzed to study the response to disturbances produced by varying the flow rates through the Tianjin outlet. The results show that when the inflow at the head changes in the same way as the sum of the flow rates through all the outlets, the transition time and the fluctuation of the water levels using the timed gate operation method are less than when using the simultaneous gate operation method, but the variations of the gate openings and flow rates through each control gate are much larger. The flow disturbances produced by the Tianjin outlet can be rectified within several channel sections and the transition time can be greatly shortened by allowing the water levels immediately upstream of the control gates to vary within proscribed ranges, rather than being held constant.The unsteady flow in the Middle Route South-to-North Water Transfer Channel was simulated numerically using an implicit solution procedure for the Saint Venant equations. An equivalent roughness was used to simulate the effect of many transfer structures on the water levels in the main channel. Various gate operating and control methods were analyzed to study the response to disturbances produced by varying the flow rates through the Tianjin outlet. The results show that when the inflow at the head changes in the same way as the sum of the flow rates through all the outlets, the transition time and the fluctuation of the water levels using the timed gate operation method are less than when using the simultaneous gate operation method, but the variations of the gate openings and flow rates through each control gate are much larger. The flow disturbances produced by the Tianjin outlet can be rectified within several channel sections and the transition time can be greatly shortened by allowing the water levels immediately upstream of the control gates to vary within proscribed ranges, rather than being held constant.

关 键 词：Middle Route South-to-North Water Transfer Project unsteady flow open channel control system SIMULATION 

分 类 号：TV68[水利工程—水利水电工程] TN943.6[电子电信—信号与信息处理]