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Shock and Vibration
Volume 2017 (2017), Article ID 7363627, 18 pages
Research Article

Analysis of Pressure Pulsation Induced by Rotor-Stator Interaction in Nuclear Reactor Coolant Pump

1State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310007, China
2School of Engineering, Zhejiang University City College, Hangzhou 310035, China
3Institute of Process Equipment, Zhejiang University, Hangzhou 310007, China

Correspondence should be addressed to Pengfei Wang

Received 4 April 2017; Accepted 12 July 2017; Published 16 August 2017

Academic Editor: Mickaël Lallart

Copyright © 2017 Xu Zhang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The internal flow of reactor coolant pump (RCP) is much more complex than the flow of a general mixed-flow pump due to high temperature, high pressure, and large flow rate. The pressure pulsation that is induced by rotor-stator interaction (RSI) has significant effects on the performance of pump; therefore, it is necessary to figure out the distribution and propagation characteristics of pressure pulsation in the pump. The study uses CFD method to calculate the behavior of the flow. Results show that the amplitudes of pressure pulsation get the maximum between the rotor and stator, and the dissipation rate of pressure pulsation in impellers passage is larger than that in guide vanes passage. The behavior is associated with the frequency of pressure wave in different regions. The flow rate distribution is influenced by the operating conditions. The study finds that, at nominal flow, the flow rate distribution in guide vanes is relatively uniform and the pressure pulsation amplitude is the smallest. Besides, the vortex shedding or backflow from the impeller blade exit has the same frequency as pressure pulsation but there are phase differences, and it has been confirmed that the absolute value of phase differences reflects the vorticity intensity.