摘要
采用雷诺平均纳维—斯托克斯方程(RANS)和标准kε湍流模型,运用SIMPLEC算法,对椭圆型线前置竖井贯流进水流道内的流动进行了三维数值计算,揭示了竖井进水流道内流场、特征断面的速度分布及水力损失规律。对椭圆型线竖井进水流道与出水流道匹配组成的模型泵装置进行动力特性试验,得出了4种叶片角度下的泵装置特性曲线。研究结果表明:采用椭圆型线设计的竖井进水流道合理;大型低扬程泵站采用卧式竖井贯流结构,泵装置效率较高。
The Reynolds-averaged Navier-Stokes （RANS） equation was applied for simulation of 3D- flow field in the ellipse-shaped inlet duct of a large shaft tubular pumping station. The standard k-ε model based on the Boussinesq hypothesis and SIMPLEC algorithm was adopted in the calculation. The velocity vectors and contours on specific cross section faces and the hydraulic characteristics of the tubular inlet duct were brought to light. The characteristic performances of the shaft tubular model pump set were obtained under four different vane angles. A general conclusion to emerge from this study is that the design method employed ellipse-shaped is ideal and the efficiency is high when tubular pumps in low head pumping stations is applied. The research will provide reference and benefit the optimization design about the same type pumping station.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2006年第10期58-61,共4页
Transactions of the Chinese Society for Agricultural Machinery
基金
国家自然科学基金资助项目(项目编号:50279045)
江苏省重点实验室开放基金资助项目(项目编号:KJS02025)
关键词
竖井进水流道
数值模拟
SIMPLEC算法
试验
Shaft tubular inlet duct, Numerical simulation, SIMPLEC algorithm, Experiment
