摘要
针对一典型的150QJ20型深井离心泵,设计了3种进口边位置的叶轮,基于Fluent软件,采用标准k-ε模型、SIMPLEC算法对其进行了全流场数值计算,对不同进口边位置的叶轮出口断面的压力场、湍流场和速度场进行了比较,并结合试验分析了进口边位置对深井离心泵水力性能的影响。结果表明,适当延伸叶轮进口边,增加后流线的长度,可以减小叶轮出口的湍流强度,改善流场分布;可以相对减小叶轮进口直径和叶轮进口的冲击损失,提高深井离心泵的水力性能。
For a typical 150QJ20 type deep-well centrifugal pump, three positions of the impeller inlet edge were designed. The whole flow field of the deep-well centrifugal pump was simulated with Fluent code based on standard k-ε turbulence model and the SIMPLEC arithmetic. The static pressure and turbulent flow field were compared, the impact of the position of impeller inlet edge on the hydraulic performance was analyzed. The results showed that appropriate extend the impeller inlet edge could reduce the turbulence intensity of impeller exports and improve the flow field, also could reduce the impeller inlet diameter and increase the hydraulic performance of deep-well centrifugal pump.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2012年第3期78-82,共5页
Transactions of the Chinese Society for Agricultural Machinery
基金
浙江省重大科技专项重大工业项目(2010C01032)
江苏高校优势学科建设工程资助项目
江苏省2011年度普通高校研究生科研创新计划项目(CXZZ11-0566)
关键词
深井离心泵
叶轮
流场
水力性能
数值模拟
Deep-well centrifugal pump, Impeller, Flow field, Hydraulic performance, Numericalsimulation
