摘要
基于N-S方程和标准k-ε湍流模型,对同一蜗壳分别匹配叶片数为4、6、8的3种叶轮离心泵以清水为介质进行数值模拟,获得了离心泵的外特性及静压分布。结果表明:相同流量下,H(Z=6)>H(Z=8)>H(Z=4),P(Z=8)>P(Z=6)>P(Z=4);在80~120 m^(3)·h^(-1)流量范围内,η(Z=6)>η(Z=4)>η(Z=8);在40~80m^(3)·h^(-1)流量范围内,η(Z=4)>η(Z=8)>η(Z=6)。叶片数的增加使泵内流动更加稳定,存在恰当叶轮叶片数使得离心泵综合性能最佳。
Based on N-S equation and standard k-ε turbulence model, numerical simulation of 3 kinds of centrifugal pumps with blade numbers of 4, 6, 8 was carried out with clear water as medium. The performance characteristics, static pressure distribution of the pump were obtained. The results showed that, under the same flow rate, H(Z=6)>H(Z=8)>H(Z=4),P(Z=8)>P(Z=6)>P(Z=4);In the flow range of 80~120 m^(3)·h^(-1), η(Z=6)> η(Z=4) >η(Z=8);In the flow range of 40~80 m^(3)·h^(-1), η(Z=4)>η(Z=8)>η(Z=6).The increase of the number of blades made the flow in the pump more stable. There was an appropriate number of impeller blades to make the comprehensive performance of centrifugal pump the best.
作者
毕智高
张玲玲
贾冰
张晓刚
BI Zhi-gao;ZHANG Ling-ling;JIA Bing;ZHANG Xiao-gang(School of Chemistry and Chemical Engineering,Yulin University,Yulin 719000,China;Shaanxi Key Laboratory of Low Metamorphic Coal Clean Utilization,Yulin 719000,China;PetroChina Xinjiang Oilfield Gas Storage and Transportation Company,Karamay 834002,China)
出处
《当代化工》
CAS
2021年第5期1136-1139,共4页
Contemporary Chemical Industry
基金
陕西省教育厅重点实验室项目(项目编号:18JS122)。
关键词
离心泵
叶片数
数值模拟
Centrifugal pump
Blade number
Numerical simulation
作者简介
毕智高(1982-),男,陕西省咸阳市人,讲师,工学硕士,2012年毕业于兰州理工大学流体机械专业,研究方向:流体机械。E-mail:280347593@qq.com。
