摘要
基于ANSYS CFX软件应用标准k-ε湍流模型、均质多相模型和Rayleigh-Plesset方程对一比转数为89的模型泵在冲角变化时泵内的空化流场进行数值模拟。根据计算结果预测了模型泵无空化时的能量特性和空化时的空化性能,并分析了空化状态下叶轮中间流面上的空泡体积分布和叶片中间流线的载荷特性。研究表明,模型泵叶轮叶片冲角变化时,对设计点的扬程和效率影响不大,对于空化性能则存在一个最优值,不是冲角越大越好。
The standard k-ε turbulence model,homogeneous multiphase model and Rayleigh-Plesset equation were applied to simulate cavitation flow in centrifugal pump with different blade incidence angle based on ANSYS CFX.According to the simulation results,the performance characteristics under no-cavitation condition and cavitation characteristics of model pump were predicted,the blade loading characteristics under cavitation condition was analyzed.The results shows that the head and efficiency of model pump almost have no variation when charge the incidence angle of model pump,but there is a optimum value of incidence angle for cavitation characteristic.
出处
《流体机械》
CSCD
北大核心
2011年第4期17-20,66,共5页
Fluid Machinery
基金
国家杰出青年科学基金资助项目(50825902)
国家自然科学基金项目(51079602)
江苏省"333高层次人才培养工程"科研项目
江苏省"六大人才高峰"资助项目
关键词
离心泵
冲角
空化
数值模拟
centrifugal pump
incidence angle
cavitation
numerical simulation
