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- Title
Development of Reduced 3D Models for Neutronic Calculations of the ASTRA Critical Facility.
- Authors
Nevinitsa, V. A.; Fomichenko, P. A.; Boyarinov, V. F.; Zimin, A. A.; Kruglikov, A. E.; Volkov, Yu. N.
- Abstract
An approach based on the computational search for the extrapolated upper boundary of the core and accounting for the axial asymmetry of the assembly that models a high-temperature gas-cooled reactor with an annular core is considered, and its applicability for the development of 3D calculation models of the ASTRA critical facility is justified. Owing to the presence of the lower reflector and absence of the upper one, 2D models based on experimentally determined buckling cannot be used; therefore, an alternative approach based on the use of the extrapolated assembly height is suggested. The use of this method is shown by the example of the computational analysis of the experiments for measuring the efficiency of the control and protection system unit is presented.
- Subjects
NUCLEAR reactor cores; FACILITIES
- Publication
Physics of Atomic Nuclei, 2022, Vol 85, Issue 8, p1383
- ISSN
1063-7788
- Publication type
Article
- DOI
10.1134/S106377882208018X