旋流环形堰竖井泄洪洞三维流场数值模拟  

Three-dimensional numerical simulation of morning glory shaft spillway with swirling flow

作　　者：施春蓉 郭新蕾[2] 杨开林[2] 赵林明[1] 夏庆福[2] 

机构地区：[1]河北工程大学,河北邯郸056021 [2]中国水利水电科学研究院流域水循环模拟与调控国家重点实验室,北京100038

出　　处：《南水北调与水利科技》2015年第5期1035-1039,共5页South-to-North Water Transfers and Water Science & Technology

基　　金：国家重点基础研究发展规划"973"项目(2013CB036405);中国水利水电科学研究院专项基金(水集1313)

摘　　要：旋流环形堰竖井泄洪洞是一种新型的环境友好的内消能工,跟传统环形堰竖井泄洪洞相比,泄洪洞的流态和消能防蚀机理明显不同。作为一种新型布置形式,其复杂的水流特性并不是十分清楚。依托于广东清远抽水蓄能电站下水库泄洪洞工程,基于RNG k-ε双方程湍流数学模型,并结合VOF(Volume Of Fluid)方法,对下库旋流环形堰竖井泄洪洞进水口、竖井旋流泄洪洞、出口的复杂水流进行了三维数值模拟,并对部分水力参数的特性进行了解析计算,获得了流态、压力、流速、空化数等水力要素的变化规律。模拟结果表明,数值计算结果与物理模型试验成果吻合较好。并通过数值模拟验证了该新型内消能工的泄流能力和高消能效率。The morning glory shaft spillway with swirling flow is a new kind of environmentally friendly inner energy dissipation.Compared with the traditional morning glory shaft spillway,morning glory shaft spillway with swirling flow has obviously different flow pattern,corrosion mechanism,and energy dissipation.As a new type of morning glory shaft spillway,its complex flow characteristics are not illustrated clearly.In this paper,the shaft spillway of Qingyuan pumped storage power station was selected as the study object.Based on the RNG k-εtwo-equation model for turbulent flow and VOF method,three-dimensional turbulent flow in the inlet and outlet of morning glory shaft spillway with swirling flow was simulated.Analytical calculations were performed to characterize some hydraulic parameters.The variation law of flow pattern,pressure,velocity,and cavitation number was obtained.The calculated results were in good agreement with the observed data.The discharge capacity and high efficiency of energy dissipation were verified by the numerical simulation.

关 键 词：旋流 内消能工 环形堰竖井泄洪洞 潜水起旋墩 数值模拟 

分 类 号：TV135.2[水利工程—水力学及河流动力学]