Verification of statistical method CORN for modeling of microfuel in the case of high grain concentration

Two methods of modeling a double-heterogeneity fuel are studied: the deterministic positioning and the statistical method CORN of the MCU software package. The effect of distribution of microfuel in a pebble bed on the calculation results is studied. The results of verification of the statistical me...

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Bibliographic Details
Published inPhysics of atomic nuclei Vol. 78; no. 11; pp. 1200 - 1205
Main Author Chukbar, B. K.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 15.12.2015
Springer
Subjects
ABUNDANCE
C CODES
Coatings
COMPUTERIZED SIMULATION
CONCENTRATION RATIO
Corn
GRAPHITE
M CODES
Methods
Monte Carlo method
NUCLEAR FUELS
Particle and Nuclear Physics
PEBBLE BED REACTORS
Physics
Physics and Astronomy
POSITIONING
REACTIVITY
SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
SPHERES
VERIFICATION
TRISO
regular lattices
Monte Carlo method
HTR-PROTEUS bench
statistical method CORN
microfuel
criticality
MCU project
ASTRA bench
benchmark
verification
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Summary:Two methods of modeling a double-heterogeneity fuel are studied: the deterministic positioning and the statistical method CORN of the MCU software package. The effect of distribution of microfuel in a pebble bed on the calculation results is studied. The results of verification of the statistical method CORN for the cases of the microfuel concentration up to 170 cm –3 in a pebble bed are presented. The admissibility of homogenization of the microfuel coating with the graphite matrix is studied. The dependence of the reactivity on the relative location of fuel and graphite spheres in a pebble bed is found.
ISSN:1063-7788
1562-692X
DOI:10.1134/S1063778815110071