2Schaefer S, Olson E. Experimental evaluation of axial thrust in pumps[J]. World Pumps, 1999, 393: 34-37.
3Adkins D R, Brennen C E. Analyses of hydrodynamic radial forces on centrifugal pump impellers[J]. Journal of Fluids Engineering, 1988, 110(1): 20-28.
4Uy R V, Brennen C E. Experimental measurements of rotordynamic forces caused by front shroud pump leakage[J]. Journal of Fluids Engineering, 1999, 121(3): 633-637.
5Cao Lei, Wang Zhengwei, Luo Yongyao, et al. Numerical analysis of the flow field in the pump chamber of a centrifugal pump with back blades[C]//IOP Conference Series: Materials Science and Engineering, Belling: lOP Publishing, 2013, 52: 032004.
6Stepanoff A J. Centrifugal and Axial Flow Pumps: Theory, Design, and Application[M]. New York: John Wiley & Sons. Inc., 1948.
7Wang Hui, Mu Jiegang, Zheng Shuihua, et al. Simulation and experimental study on the impact of breadth of back blade on axial force balance[J]. Applied Mechanics and Materials, 2012, 130: 1568- 1572.