摘要
应用NUMECA公司的FINE软件,采用Navier-Stokes方程组和Spalart-Allmaras湍流模型,对两种离心泵内部流动进行数值计算,得到叶轮内流场在3种不同工况下的流动分布。结果表明:增加叶轮叶片能有效的改善液流的流动稳定性,对提高整个泵的高效区范围和扬程有显著作用。数值模拟可以准确的对离心泵内部的复杂三维流动与水力性能进行有效预测。
Based on FINE software developed by NUMECA Company, the Navier-Stokes equations and Spalart-Allmaras turbulent model are used to numerically calculate the internal flow of two centrifugal pumps. The distributions of inner flow field are obtained under three different operation conditions. The analyses show that the increase of the number of impeller＇s blades can effectively improve the flow stability of fluid and the high efficiency zone range and lift of pump can be greatly enhanced. Compared with test results, it is obvious that this numerical simulation can accurately predicate the complicated three- dimensional flow and the hydraulic performance of centrifugal pumps.
出处
《水力发电》
北大核心
2014年第3期50-54,62,共6页
Water Power
基金
国家自然科学基金(51279172)
西华大学研究生创新基金(YCJJ201387)
西华大学流体机械重点实验室开放基金(SZJJ2013-009)
省部共建流体及动力机械重点实验室学术成果培育项目(西华大学)(SB2DPY-11-3)
关键词
叶轮
FINE软件
离心泵
数值计算
水力性能
impeller, FINE software
centrifugal pump
numerical calculation
hydraulic performance
