水力发电学报2012，Vol.31Issue(3)：217-222,6.
大型立式混流泵装置水动力特性数值模拟
Numerical analysis on hydrodynamics of large-scale mixed-flow pump system
摘要
Abstract
Three-dimensional fluid flow inside a mixed-flow pump system is studied using the shear stress transport（SST） turbulent equations of combined k-ε and k-ω models,with the governing equations solved by a fully-coupling implicit method,focusing on the flow pattern in the volute passage of double helixes and the hydraulic characteristics of impeller.Results show that the flow in the volute passage takes spiral pattern of combined axial and rotary flows and that the static pressure distribution is symmetric.At the outlet,the uniformity of axial velocity is poor and the velocity-weighted average swirl angle is relatively low,and on the blades the static pressure has a regular distribution,higher on its pressure side than its suction side.As flow rate increases,the axial force of runner decreases gradually,while the radial force decreases first and then increases.The calculated performance curves are close to the measurements.关键词
水力机械/混流泵/蜗壳/SST模型/水力性能Key words
hydraulic machinery/mixed-flow pump/volute/SST model/hydraulic performances分类
建筑与水利引用本文复制引用
杨帆,汤方平,刘超..大型立式混流泵装置水动力特性数值模拟[J].水力发电学报,2012,31(3):217-222,6.基金项目
国家自然科学基金项目 （）
江苏省产学研前瞻性联合研究项目 （）
南水北调工程科技创新项目（KJCX-200807）资助 （）
