Zobrazeno 1 - 10
of 20
pro vyhledávání: '"S. S. Gorodkov"'
Publikováno v:
Physics of Atomic Nuclei. 79:1298-1304
A new approach to calculation of the coefficients of sensitivity of the fuel pin power to deviations in gap sizes between fuel assemblies of the VVER-1000 reactor during its operation is proposed. It is shown that the calculations by the MCU code sho
Publikováno v:
Kerntechnik. 81:356-362
A burn-up calculation of large systems by Monte-Carlo code (MCU) is complex process and it requires large computational costs. Previously prepared isotopic compositions are proposed to be used for the Monte-Carlo code calculations of different system
Publikováno v:
Kerntechnik. 80:408-411
Jacketless fuel assemblies change their form in the course of operation. Often they bow lengthwise. Primarily, these fuel assembly (FA) bows threaten to reduce the control rods' fall rate, but at the same time they change (e. g. increase) the amount
Autor:
S. S. Gorodkov, M. A. Kalugin
Publikováno v:
Kerntechnik. 80:321-325
Up to now core calculations with Monte Carlo provided only average cross-sections of mesh cells for further use either in finite difference calculations or as benchmark ones for approximate spectral algorithms. Now MCU code is capable to handle funct
Publikováno v:
Kerntechnik. 80:394-401
A burn-up calculation of VVER's cores by Monte-Carlo code is complex process and requires large computational costs. This fact makes Monte-Carlo codes usage complicated for project and operating calculations. Previously prepared isotopic compositions
Publikováno v:
Kerntechnik. 78:280-284
The isotopic composition of the control rods absorber changes under the neutron flux influence, so the control rods efficiency can decrease. In the VVER-1000 control rods boron carbide and dysprosium titanate are used as absorbing materials. In boric
Autor:
S. V. Marin, A. S. Kulakov, A. P. Novosel’tsev, E. A. Sukhino-Khomenko, S. N. Bol’shagin, N. I. Alekseev, M. A. Kalugin, M. S. Yudkevich, D. S. Oleynik, M. I. Gurevich, E. A. Gomin, A. V. Pryanichnikov, S. S. Gorodkov, D. A. Shkarovskiy
Publikováno v:
Physics of Atomic Nuclei. 75:1634-1646
The software developed within the framework of the MCU project which implements the Monte Carlo method for solving the transport equations for various kinds of radiation is widely used for calculating nuclear reactors of different types. The final ve
Autor:
M. A. Kalugin, S. S. Gorodkov
Publikováno v:
Atomic Energy. 106:231-237
The Monte Carlo method can be used successfully to calculate the average cross sections of reactor cells, but difficulties arise when it is used to calculate the diffusion coefficients. The present article suggests a new algorithm for calculating the
Autor:
S. S. Gorodkov
Publikováno v:
Atomic Energy. 103:628-632
It is suggested that there is a close analogy between the statistical error of local characteristics in a Monte Carlo calculation of a large reactor and random deviations of the multiplication properties of these cells from a nominal value within tec
Autor:
Yu. A. Epanechnikov, A. A. Ognev, V. Yu. Aborin, Yu. A. Krainov, A. D. Klochkov, S. S. Gorodkov, V. R. Ostrovskii, N. I. Alekseev, Yu. M. Semchenkov, I. N. Aborina
Publikováno v:
Atomic Energy. 93:790-799
A series of investigations studying the currents of rhodium sensors in in-reactor monitoring systems and the relation between the currents and the energy release in the fuel elements in the nearest neighbor environment in a VVER-1000 fuel assembly mo