Vol.18, No.1, 2022, pp.93-107, doi:10.32604/fdmp.2022.017566
OPEN ACCESS
ARTICLE
Influence of the Impeller/Guide Vane Clearance Ratio on the Performances of a Nuclear Reactor Coolant Pump
  • Xiaorui Cheng1,2,*, Xiang Liu1, Boru Lv1
1 Lanzhou University of Technology, College of Energy and Power Engineering, Lanzhou, 730050, China
2 Key Laboratory of Fluid Machinery and Systems of Gansu Province, Lanzhou, 730050, China
* Corresponding Author: Xiaorui Cheng. Email:
Received 20 May 2021; Accepted 24 August 2021; Issue published 10 November 2021
Abstract
An AP1000 nuclear reactor coolant pump is considered to assess the influence of the Impeller/Guide vane clearance on the performances of this type of pumps. Experiments and numerical simulations relying on an unidirectional fluid-solid coupling approach are used to investigate the problem (stress, strain and mode of the rotor). The results reveal the relationship existing between the hydraulic performance of the nuclear reactor coolant pump and the clearance ratio. The effect of clearance ratio on the maximum equivalent stress on the back surface of the impeller blade is greater than that on the working surface (the maximum equivalent stress on the back surface of impeller blade is about three times that on the working surface). The clearance ratio has a scarce effect on the first six natural frequencies of the rotor of the nuclear reactor coolant pump. The related vibrational modes have different waveforms.
Keywords
Nuclear reactor coolant pump; clearance ratio; fluid-solid coupling; stress and strain; numerical calculation
Cite This Article
Cheng, X., Liu, X., Lv, B. (2022). Influence of the Impeller/Guide Vane Clearance Ratio on the Performances of a Nuclear Reactor Coolant Pump. FDMP-Fluid Dynamics & Materials Processing, 18(1), 93–107.
This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.