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One-dimensional bimodal model of vibration and impacting of instrument tubes in a boiling water reactor

Journal Article · · Nuclear Science and Engineering; (United States)
OSTI ID:6009141
 [1]; ;  [2]
  1. Comision Nacional de Energia Atomica, Libertador (Argentina). Gerencia de Ingenieria
  2. Univ. of Hannover (Germany). Inst. of Nuclear Engineering and Nondestructive Testing
The vibration and impacting of an instrument tube in a boiling water reactor (BWR) have been studied using a one-dimensional bimodal model. Four modal nonlinear boundary conditions have been applied, and a set of coupled nonlinear equations describing the temporal evolution of two continuous modal amplitudes have been obtained. These equations have been numerically solved by means of a generalized Runge-Kutta algorithm for stochastic equations. The theoretical results have been compared with experimental in-core neutron noise measurements performed in a 1300-MW BWR, Gundremmingen C, and have been used to interpret the particular vibration behavior of one instrument tube.
OSTI ID:
6009141
Journal Information:
Nuclear Science and Engineering; (United States), Journal Name: Nuclear Science and Engineering; (United States) Vol. 115:1; ISSN NSENAO; ISSN 0029-5639
Country of Publication:
United States
Language:
English