DYNAMIC STABILITY OF A FLUIDIZED-BED NUCLEAR-REACTOR

Recent advances in the study of fluidized-bed nuclear reactor's stabil ity, due to short and long time transients, are discussed. The point-k inetic model, which considers flux variation in the axial direction, i s applied to study short time transients, and the theory of bifurcatio n is used for long time transients. Numerical results are presented fo r both transients. The preliminary results indicate that this concept of a nuclear reactor has a behavior similar to that of a conventional reactor regarding its dynamic stability.