【作者】 郭新蕾； 夏庆福； 付辉； 杨开林； 董兴林；

【Author】 GUO Xin-lei;XIA Qing-fu;FU hui;YANG Kai-lin;DONG Xing-lin;State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin,China Institute of Water Resources and Hydropower Research;

【机构】 流域水循环模拟与调控国家重点实验室中国水利水电科学研究院；

【摘要】 改变一般的防漩、消涡观念,提出一种新的由自调流潜水起旋墩为核心构成的旋流环形堰竖井泄洪洞,虽脱胎于常规喇叭形竖井泄洪洞,但在泄洪流态和消能防蚀方面又另辟蹊径。依托广东清远抽水蓄能电站泄洪洞工程,对新型环形堰竖井泄洪洞进水口、旋流泄洪洞、出口的复杂水流运动进行了数值模拟研究,获得了该新体型进水口流态、旋流空腔发展过程、竖井内部流态、平洞自由水面、压力等主要水力要素的分布规律。结果表明:计算得到的上述水力学要素分布规律与模型测量趋势上一致,量值上吻合较高。同时,模拟计算结果也较好揭示了自调节潜水起旋墩的旋流、自调流机理以及新型泄洪洞的消能原理。更多还原

【Abstract】 To overcome the limitations such as commonly vortices in inlet and complicated cavitation control measures of vortex drop shaft spillway,a novel shaft spillway which consists of submersible and spiral-flow-generated piers and morning glory weir was developed.Compared with the traditional morning glory shaft spillways,such newly interior energy dissipater has much difference in the hydraulic characteristics such as vortex flow and corrosion resistance mechanism.Based on the spillway project of the Qingyuan pumped storage power station,the behavior of the newly type of inlet and the performance of the vortex drop structure was investigated and simulated by using commercial computation hydromechanics software.The hydraulic characters such as the flow pattern,air core distribution,position of the annular hydraulic jump,pressure and water profiles of the outlet tunnel were obtained.It shows that such distributions of the above hydraulic elements agree well with the measured data.Besides,the simulated results help to reveal the self-adjusting mechanism and energy dissipation principle of the newly vortex drop shaft spillway.更多还原