Jkh. Karlsson et I. Pazsit, An analytically solvable, axially non-homogeneous reactor model II. Reactor kinetic approximations, ANN NUC ENG, 27(1), 2000, pp. 43-62
In a previous publication, a 2-D reactor model was introduced which contain
ed a partially inserted thin absorber. Both the static flux, as well as the
noise induced by the vertical oscillations of the rod were calculated by a
nalytical methods. In this paper the validity of certain reactor kinetic ap
proximations of the dynamical problem are investigated in the same reactor
model. The induced noise is calculated in the adiabatic and in the plateau
frequency approximation and compared with the exact solution. The significa
nce of these two approximations is that they can be applied with existing c
ore calculation codes either directly, or with minor modifications. (C) 199
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