Calculation of Heterogeneity Effects in ZPR-III Fast Assemblies Using the DSN Programs | Zendy

D. Meneghetti | Zendy; Mark Loomis | Zendy

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Calculation of Heterogeneity Effects in ZPR-III Fast Assemblies Using the DSN Programs

Author(s) -

D. Meneghetti,

Mark Loomis

Publication year - 1960

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/4085834

Subject(s) - homogeneous , multiplication (music) , slab , flux (metallurgy) , limiting , computational physics , reactivity (psychology) , boundary (topology) , elongation , physics , chemistry , mathematics , materials science , statistical physics , mathematical analysis , combinatorics , engineering , mechanical engineering , medicine , alternative medicine , organic chemistry , pathology , geophysics , metallurgy , ultimate tensile strength

Reactivity changes, flux variations, and detector-response variations for ZPR-III fast critical assemblies, due to variations in heterogeneities caused by various intradrawer configurations of fuel and diluent plates and deviations of reactivities from ideal homogeneous cores, are calculated as reflective boundary slab cells using the DSN code. For these cells the calculated multiplication constants, for a given assembly plate configuration, by N = 4,8, and 16 approximations successively increase such that the eigen-values obtainbale at N = 16 are still generally far from the limiting values at large N. This aspect makes for uncertainty, especially if differences in k/sub eff/ values from homogeneous are desired. (auth

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