Frequency-domain stability analysis of reactivity feedback mechanisms

Doron Sivan, Erez Gilad, Shai Kinast

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Frequency-domain analysis is applied to a simplified point reactor model in order to study the stability of the reactor to small perturbations. Full-power transfer function is derived including the reactivity feedback of both fuel and coolant temperatures. The Routh-Hurwitz stability criterion is applied to the characteristic equation, and correspondingly three categories of stability are identified: unconditional stability, unconditional instability, and conditional stability which depends on the power level. An explicit expression for the stability threshold of the reactor power is derived and its dependence on the reactivity coefficients is discussed.

Original languageEnglish
Title of host publicationInternational Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2019
PublisherAmerican Nuclear Society
Pages1980-1989
Number of pages10
ISBN (Electronic)9780894487699
StatePublished - 1 Jan 2019
Event2019 International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2019 - Portland, United States
Duration: 25 Aug 201929 Aug 2019

Publication series

NameInternational Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2019

Conference

Conference2019 International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2019
Country/TerritoryUnited States
CityPortland
Period25/08/1929/08/19

Keywords

  • Frequency-domain analysis
  • Reactivity coefficients
  • Reactor stability
  • Transfer function

ASJC Scopus subject areas

  • Applied Mathematics
  • Nuclear Energy and Engineering

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