不同水位对泵站进水池流态影响的数值模拟  

Numerical Simulation on the Effect of the Different Water Level on Flow State of Intake Sump of Pump Station

作　　者：高传昌[1] 解克宇 黄丹[1] 刘新阳[1] 李郑淼 

机构地区：[1]华北水利水电大学,河南郑州450045

出　　处：《华北水利水电大学学报（自然科学版）》2015年第6期10-14,共5页Journal of North China University of Water Resources and Electric Power：Natural Science Edition

基　　金：国家自然科学基金项目(51309099);水利部公益性行业专项(201201085);华北水利水电大学创新计划(HSCX2014118);华北水利水电大学创新课题(YK2014-14)

摘　　要：采用Volume of Fluid(VOF)模型对田山泵站进水池进行了三维流场计算,分析了不同水位及开机组合情况下泵站进水池的水流流态.研究发现:泵站低水位运行时,由于淹没深度较小,进水池水面存在较为剧烈的波动;进水池中水流流态发生恶化,出现了水面旋涡和水中旋涡;在附底涡和进水池两侧附壁涡的共同作用下,进水喇叭口正下方存在剧烈的旋涡,对机组的水力性能产生严重的影响.The Volume of Fluid（ VOF） model is used to conduct three-dimensional flow field calculation of intake sump of Tianshan pumping station,and the flow state of intake sump of pump station is analyzed under the condition of different water level and power combinations. The results show that： when pumping stations run at a low water level,since the submerged water depth decreases,there is more severe fluctuations on the water surface of the intake sump; furthermore,since water flow state in the intake sump occurs deterioration,there has been free surface vortex and vortex in water. Finally,in the joint action of bottom-attached vortex and sidewall-attached vortex,strong vortex appears just below the bell mouth,which will have a serious impact on the hydraulic performance of water pump set.

关 键 词：泵站 水位 旋涡 流态 VOF模型 

分 类 号：TV131[水利工程—水力学及河流动力学]