Some remarks to application of bifurcation analysis in BWR stability analysis

Research output: Contribution to journalConference articleContributedpeer-review


  • Carsten Lange - , TUD Dresden University of Technology (Author)
  • Dieter Hennig - , TUD Dresden University of Technology (Author)
  • Antonio Hurtado - , Chair of Hydrogen and Nuclear Energy (Author)


Currently, BWR stability analysis is most often performed by application of system codes which provide the time evolution of the neutron flux or thermal power at a defined operational point (OP) after imposing a system parameter perturbation. However, in general, it is impossible to understand the real stability state of the BWR at a specific OP by application of system code analysis alone. Hence, we are searching for methods developed in the nonlinear dynamics field in order to reveal the nature of the BWR stability states when power oscillations are observed. A powerful method is bifurcation analysis. In this paper, we will demonstrate an example of a possible BWR instability phenomenon, which can be understood only in nonlinear terms.


Original languageEnglish
Pages (from-to)3275-3292
Number of pages18
JournalInternational Conference on the Physics of Reactors 2012 : Advances in Reactor Physics
Publication statusPublished - 2012


TitleInternational Conference on the Physics of Reactors 2012: Advances in Reactor Physics, PHYSOR 2012
Duration15 - 20 April 2012
CityKnoxville, TN
CountryUnited States of America


ASJC Scopus subject areas


  • Asymptotic decay ratio, Coexistence reactor states, Hopf bifurcation, In-phase and out-of-phase power oscillations, Limit cycle