Rotordynamic forces generated by discharge-to-suction leakage flows in centrifugal pumps

作     者：刘全忠 王洪杰 刘占生 

作者机构：School of Energy and Power EngineeringHarbin Institute of Technology 

出 版 物：《Journal of Harbin Institute of Technology(New Series)》 (哈尔滨工业大学学报（英文版）)

年 卷 期：2009年第16卷第3期

页      面：366-370页

核心收录：

学科分类：11[军事学] 0810[工学-信息与通信工程] 08[工学] 0815[工学-水利工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 110802[军事学-后方专业勤务] 0812[工学-计算机科学与技术（可授工学、理学学位）] 1108[军事学-军事后勤学] 

基　　金：Sponsored by the National Natural Science Foundation of China (Grant No. 10632040) 

主　　题：centrifugal pump shroud passages whirl rotordynamic force numerical calculation 

摘      要：In order to investigate the flow-induced vibration in the shroud passage of centrifugal pump and predict rotordynamic forces of centrifugal pump rotor system, an analysis of rotordynamic forces arising from shrouded centrifugal pump is presented. CFD techniques were utilized to analyze the full three-dimensional viscous, primary/secondary flow field in a centrifugal pump impeller to determine rotordynamic forces. Multiple quasisteady solutions of an eccentric three-dimensional model at different whirl frequency ratios yielded the rotordynamic forces. The skew-symmetric stiffness, damping, and mass matrices were obtained by second-order leastsquares analysis. Simulation of the coupled primary/secondary flow field was conducted, and the complex flow characteristics in the flow field of a shroud passage were achieved including the mean velocity and pressure, as well as the eddy in a large scale of flow field due to viscosity. The rotordynainic force coefficients were calculated, and the resuhs were in good agreement with those of experiment except for the direct inertial coefficient without the consideration of whirling forces from the impeller primary flow passage.