引黄泵站进水池几何形式的数值模拟  

Numerical Simulation on Geometric Form of Pump Sump in the Yellow River Pump Station

作　　者：徐存东[1] 杨柯[1] 周琳博[1] 宋永占[1] 何淑梅[1] 

机构地区：[1]兰州理工大学能源与动力工程学院,甘肃兰州730050

出　　处：《甘肃科学学报》2011年第2期150-154,共5页Journal of Gansu Sciences

基　　金：甘肃省景泰川电力提灌管理局横向委托资助项目

摘　　要：针对高含沙水流对引黄泵站能源损耗严重的情况,对引黄泵站采用定常不可压缩流体的控制方程和重整化群湍流模型,应用SIMPLEC算法,提出了泵站进水池优化的目标函数,找出了含沙水流在进水池中的运动规律,揭示了回流,涡旋以及泥沙淤积的产生机理,研究了进水池各形式对水力性能及流态的影响.研究表明,引黄泵站蜗壳形进水池可以有效防治泥沙淤积,保证其良好进水流态,促使水泵进口流速分布均匀,并确保水泵性能高效发挥,达到节能降耗的目的.The Yellow River Pumping Station suffers from its serious energy loss from high sediment-laden flow.Applying the SIMPLEC algorithm,we have put forward the optimal objective function,identify the law of motion at the inlet of the sump,reveal the mechanisms of backflow,vortex and the deposition of sediments,and study the various forms of the inlet which can influence the hydraulic performance and the flow states.Research shows that,for the Yellow River Pump Station,the shell-shaped sump can effectively prevent the deposition of sediments,distribute the velocity of the flow in uniformity,and ensure the performance of the pumps which can play effectively.

关 键 词：引黄泵站 含沙水流 前池 进水池 节能降耗 

分 类 号：TV131.4[水利工程—水力学及河流动力学]