三峡水轮机尾水管涡带的CFD数值模拟  

CFD numerical simulation of the vortex in the draft tube of Three Gorges′ turbine

作　　者：张双全[1] 符建平 段开林[2] 万鹏[1] 

机构地区：[1]华中科技大学能源与动力工程学院,湖北武汉430074 [2]三峡水力发电厂,湖北宜昌443000

出　　处：《华中科技大学学报（自然科学版）》2006年第7期19-20,23,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50309013).

摘　　要：采用非定常雷诺应力湍流模式对三峡水轮机尾水管内的流动进行了数值模拟.分析了涡带的运动规律及其产生的水压力脉动的频率特性与相位特性和计算结果产生误差的原因,给出了改进的措施.研究结果表明,采用非定常雷诺应力湍流模式可以预测到尾水管内水压力脉动的频率特性,与现场试验的结果符合.This paper numerically simulated the flow in draft tube of the Three Gorge＇s prototype using non-steady RNS turbulence model and detailed analyzed the law of motion of the vortex rope as well as the frequency and phase characteristics of the water pressure pulsation produced yet it. Addi- tionally, this paper analyzed the reason of error of simulated results and improvement method. The research indicates that using the non-steady RNS turbulence model can predict the frequency characteristics of the pressure pulsation in draft tube and the result close agreement with the field test.

关 键 词：水力发电 湍流模式 尾水管 涡带 压力脉动 

分 类 号：TM612[电气工程—电力系统及自动化]