Title: Dynamic response of nuclear fuel assembly excited by pressure pulsations
Authors: Zeman, Vladimír
Hlaváč, Zdeněk
Citation: Applied and Computational Mechanics. 2012, vol. 6, no. 2, p. 219-230.
Issue Date: 2012
Publisher: University of West Bohemia
Document type: článek
URI: http://hdl.handle.net/11025/1842
ISSN: 1802-680X (Print)
2336-1182 (Online)
Keywords: modální logika;zátěžové charakteristiky;palivové články jaderných reaktorů;simulace a modelování
Keywords in different language: modal logic;load characteristics;nuclear reactors fuel elements;simulation and modelling
Abstract: The paper deals with dynamic load calculation of the hexagonal type nuclear fuel assembly caused by spatial motion of the support plates in the reactor core. The support plate motion is excited by pressure pulsations generated by main circulation pumps in the coolant loops of the primary circuit of the nuclear power plant. Slightly different pumps revolutions generate the beat vibrations which causes an amplification of fuel assembly component dynamic deformations and fuel rods coating abrasion. The cyclic and central symmetry of the fuel assembly makes it possible the system decomposition into six identical revolved fuel rod segments which are linked with central tube and skeleton by several spacer grids in horizontal planes. The modal synthesis method with condensation of the fuel rod segments is used for calculation of the normal and friction forces transmitted between fuel rods and spacer grids cells.
Rights: © 2012 University of West Bohemia. All rights reserved.
Appears in Collections:Volume 6, number 2 (2012)
Články / Articles (KME)
Volume 6, number 2 (2012)

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