Email this article Modeling of Temperature and Burnup Distributions in the Uranium-Gadolinium Fuel Element of VVER
- Authors: Devyatko Y.N.1, Novikov V.V.1,2, Khomyakov O.V.1,2
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Affiliations:
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
- JSC Bochvar High-Tech Scientific and Research Institute of Inorganic Materials (JSC VNIINM)
- Issue: Vol 81, No 9 (2018)
- Pages: 1257-1275
- Section: Theoretical and Experimental Physics of Nuclear Reactors
- URL: https://journal-vniispk.ru/1063-7788/article/view/193824
- DOI: https://doi.org/10.1134/S1063778818090065
- ID: 193824
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Abstract
In this paper, we have developed a model for calculating of the fission rate and burnup in an uranium- gadolinium fuel (UGF) pellet. The heterogeneous fission rate distribution at beginning of life of the uranium-gadolinium fuel is shown to lead to the formation of a radial gradient of the porosity in the UGF pellet and to the heterogeneous radiation-induced densification of the fuel. We have also developed physical models of thermophysical properties of He, ZrO2, and zirconium cladding. Spatial and time temperature distributions in UGFE are calculated.
About the authors
Yu. N. Devyatko
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Email: homaykov_o_v@mail.ru
Russian Federation, Moscow, 115409
V. V. Novikov
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute); JSC Bochvar High-Tech Scientific and Research Institute of Inorganic Materials (JSC VNIINM)
Email: homaykov_o_v@mail.ru
Russian Federation, Moscow, 115409; Moscow, 123069
O. V. Khomyakov
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute); JSC Bochvar High-Tech Scientific and Research Institute of Inorganic Materials (JSC VNIINM)
Author for correspondence.
Email: homaykov_o_v@mail.ru
Russian Federation, Moscow, 115409; Moscow, 123069
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