Effect of guide vane outlet angle on pump performance and impeller radial force in an axial-flow heart pump  

作　　者：Liu Fufei Sang Xiaohu 刘复飞;Sang Xiaohu(School of Information Engineering, Wuhan University of Technology, Wuhan 430070, P.R. China;School of Mechatronics Engineering and Automation, Shanghai University, Shanghai 200072, P. R. China)

机构地区：Sehool of Information Engineering, Wuhan University of Technology, Wuhan 430070, P.R. China） （ School of Meehatronies Engineering and Automation, Shanghai University, Shanghai 200072, P. R. China

出　　处：《High Technology Letters》2018年第2期219-226,共8页高技术通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China(No.51574161);the Education Science Project of Young and Middle-aged Teachers of Universities in Fujian Province(No.JZ160396)

摘　　要：To study the effect of guide vane outlet angle on pump performance and impeller radial force in an axial-flow heart pump, guide vane outlet angle/34 is considered to be 20°, 15°, 10°, 5° and 3° respectively. Based on ANSYS Fluent, numerical results of pump head and efficiency are validated by exper/ment results, in which Xanthan gum solutions are used with concentration of 0.06 wt. % as working fluid. Then, the effects of/34 on pump performance and impeller radial force are discussed, the errors of head and efficiency between test and simulation are within 5%. The results a/so indicate that the pump performance and efficiency are much better than those of other angles when guide vane outlet angle/34 is 10°, and the maximum variations in head and efficiency are 1.9% and 2.2%, respectively. With/34 increasing, the pulsation of radial force decreases firstly and then increases, when/34 is 10°, the minimum pulsation is 0. 0392N, which is about 80% of the maximum pulsation amplitude.To study the effect of guide vane outlet angle on pump performance and impeller radial force in an axial-flow heart pump,guide vane outlet angle β4 is considered to be 20°,15°,10°,5° and 3°respectively. Based on ANSYS Fluent,numerical results of pump head and efficiency are validated by experiment results,in which Xanthan gum solutions are used with concentration of 0.06 wt. % as working fluid. Then,the effects of β4 on pump performance and impeller radial force are discussed,the errors of head and efficiency between test and simulation are within 5%. The results also indicate that the pump performance and efficiency are much better than those of other angles when guide vane outlet angle β4 is 10°,and the maximum variations in head and efficiency are 1. 9% and2. 2%,respectively. With β4 increasing,the pulsation of radial force decreases firstly and then increases,when β4 is 10°,the minimum pulsation is 0.0392 N,which is about 80% of the maximum pulsation amplitude.

关 键 词：heart pump pump performance guide vane outlet angle radial force rotor-sta-tor interaction 

分 类 号：R318[医药卫生—生物医学工程]