基于Fluent对多级离心泵首级的数值模拟  

The Numerical Simulation of Multistage Centrifugal Pumps First Phase Based on Fluent

作　　者：易玲[1] 李志鹏[1] 刘忠[1] 陈艳慧[1] 杨国强[1] 

机构地区：[1]长沙理工大学能源与动力工程学院,长沙410000

出　　处：《中国农村水利水电》2014年第2期114-116,121,共4页China Rural Water and Hydropower

基　　金：湖南省科技计划项目(2012GK3057)

摘　　要：为了解叶轮叶片数对多级离心泵水利性能的影响,基于k-ε湍流模型,采用Simplec算法,利用NavierStokes时均化方程,对仅改变叶轮叶片数的D100-80×12多级离心泵首级进行数值模拟。通过对Fluent数值计算得到泵内的压力,对速度流场分布进行分析,得出首级叶轮叶片数为6片时,此多级离心泵的内部流场压力及速度分布最均匀。同时利用Fluent的后处理结果对此泵进行性能预测,得出叶轮叶片为6片时,泵的效率达到最高值70.68%。For understanding the number of impeller s blades effect on the performance ot mulnstage centrifugal pumps, basea on κ-ε turbulence model, Simplec algorithm and the Navier Stokes homogenization equation is used to simulate D100-80×12 multistage centrifugal pumps＇ phase, which just changes the number of impeller blades. By Fluent numerical calculation, the pump internal pres sure and velocity field distribution can be obtained. To analyze it, when the number of impeller blade is 6, the internal flow field, in the multistage centrifugal pumps, has the most uniform pressure and velocity distribution. At the same time, by using Fluent post-- processing results for performance prediction of this pump, we conclude that when the impeller blade is 6, tee pumps＇ efficiency reach maximum 70. 68%.

关 键 词：叶片数 数值模拟 流场分析 速度 压力 

分 类 号：TK73[交通运输工程—轮机工程]