大型泵站双向进水流道三维紊流数值模拟  

Numerical simulation of three-dimensional turbulent flow for reversible intake passage in large pumping stations

作　　者：陈松山[1] 葛强[2] 周正富[1] 杨国平[1] 严登丰[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]扬州大学信息工程学院,江苏扬州225009

出　　处：《江苏大学学报（自然科学版）》2005年第2期102-105,共4页Journal of Jiangsu University：Natural Science Edition

基　　金：江苏省重点实验室开放基金资助项目(KJS02035);扬州大学自然科学基金资助项目(G0211086)

摘　　要：结合太湖治理工程中魏村枢纽的大型排灌泵站双向进水流道设计,采用雷诺平均纳维—斯托克斯方程(RANS)和标准k-ε湍流模型,运用SIMPLEC算法,模拟了双向进水流道在加设导水锥和未设导水锥时的三维流场,预测了旋涡的发生位置和形态.结果表明:未加导水锥时,喇叭口下有奇点,会产生附底旋涡,加设导水锥可以消除;加设导水锥后泵进口流速分布比未加导水锥时均匀;两方案的流道盲端死水区均存在对称旋涡.该研究有助于双向进水流道的水力优化设计.Reynolds-averaged Navier-Stokes (RANS) equation is applied for simulation of 3D-flow field in a reversible intake passage of Wei-cun pumping station. The standard k-Ε model based on the Boussinesq hypothesis and SIMPLEC algorithm are adopted. The inner flow status and various types of vortices in the reversible intake passage with intake cone and without intake cone are predicted. A general conclusion is that, without intake cone there is floor vortex under pump suction; with intake cone there is no floor vortex. Two symmetrical vortices are revealed in the other side opposite passage inlet. In comparison, the velocity distribution at pump suction with intake cone is better than without intake cone. The research results provide useful reference to the optimization design of the reversible intake passage.

关 键 词：泵站 双向流道 数值模拟 SIMPLEC算法 

分 类 号：TV131.4[水利工程—水力学及河流动力学] O357.5[理学—流体力学]