Some remarks to application of bifurcation analysis in BWR stability analysis

Publikation: Beitrag in FachzeitschriftKonferenzartikelBeigetragenBegutachtung



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.


Seiten (von - bis)3275-3292
FachzeitschriftInternational Conference on the Physics of Reactors 2012 : Advances in Reactor Physics
PublikationsstatusVeröffentlicht - 2012


TitelInternational Conference on the Physics of Reactors 2012: Advances in Reactor Physics, PHYSOR 2012
Dauer15 - 20 April 2012
StadtKnoxville, TN
LandUSA/Vereinigte Staaten



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