泵站开敞式进水池流动特性数值模拟  

Numerical simulation for the flow characteristics in the pump sump

作　　者：成立[1] 刘超[1] van ESCH B P M 周济人[1] 金燕[1] 

机构地区：[1]扬州大学水利科学与工程学院,江苏扬州225009 [2]Dept of Mech Engin,Eindhoven Univ of Tech,Eindhoven,Netherlands 5600 MB

出　　处：《扬州大学学报（自然科学版）》2009年第2期58-61,共4页Journal of Yangzhou University：Natural Science Edition

基　　金：国家自然科学基金资助项目(50809057);江苏省自然科学基金资助项目(BK2007557);江苏省“青蓝工程”优秀中青年骨干教师基金;江苏省政府出国留学基金

摘　　要：为深入研究开敞式进水池的内部流态,基于定常不可压流体的控制方程和重整化群(RNG)湍流模型,采用CFD技术,通过SIMPLEC算法,计算其三维流动,获得整体流场结果,揭示了泵站进水池水流运动规律.研究表明,进水池内流动可分为进水池直段、喇叭口吸水和进水管内流动3个阶段,各阶段的流动特征不同.在进水池喇叭管的下方、进水池水面附近吸水管靠后壁处、进水池两个边角及侧边壁下方靠近底部处等区域是易形成旋涡的主要位置,须采用措施进行预防.The pump sump, which connects forebay and intake of pump station, supplies good flow condition for the intake of the pump. The flow inside pump sump is very complex and dominated by three dimensional viscous effects. In order to recognize the characteristic of pump sump, the control volume method is used to simulation the flow filed. The RNG k--ε turbulent model and SIMPLEC algorithm are applied . Flow fields inside pump sump are analyzed in details. Using CFD, the flow pattern in the sump is revealed. The flow patterns in the sump are classified as three ones： Horti- cal, bellmouth pumping and pipe flowing. The flow characteristics of them are different. The sur-face-vortices and sub-vortices may exist above bellmouth, at backwall near water surface, near two rectangles of sump and near bottom of two side-walls. It is necessary to add some fitting in the sump to eliminate the votices.

关 键 词：进水池 泵站 流态 数值模拟 

分 类 号：TV675[水利工程—水利水电工程]