NUMERICAL ANALYSIS OF THE TWO METHODS OF CALCULATING THE NEUTRON MULTIPLICATION TIME-CONSTANT λ

A.N. Grebennikov, G.G. Farafontov, V.F. Yudintsev
VANT. Ser.: Mat. Mod. Fiz. Rroc 1990. Вып.2. С. 43-47.

      The numerical analysis of the two methods of finding the neutron multiplication time-constant, λ -the direct iteration and quasi-stationary methods - has been performed. The obtained results of computations demonstrate that the direct iteration method requires almost two times smaller number of iterations to find the λ parameter values than the known Kellogg method. The cost-effectiveness of finding parameter λ with the quasi-stationary method is higher, in terms of memory requirements, in comparison with the relaxation method and, sometimes, provides a certain gain in the number of iterations.