Parallel Calculation of Non-Stationary Processes in the Nuclear Reactor
https://doi.org/10.1134/S2079562920060548
Abstract
Kurchatov Institute has a critical ASTRA stand, where experiments are carried out to study the neutron-physical characteristics of VTGR-type reactors. Information on the evaluated experiments currently exists only for stationary experiments and is absent for non-stationary ones; moreover the calculation analysis for most part of non-stationary experiments has not been carried out yet. The last task demands the calculation by neutronic code to be able to solve time-dependent problems in accordance to space distribution of neutron field. When considering the complex neutron-physical systems with the number of calculation points than 1 million, the calculation time can be an hour or more, and in case of non-stationary process with the small step of time, the waiting can be a month. ASTRA is a complex system with about 1 million calculated points. Parallel technologies can be used to speed up the non-stationary calculation. The aim of the study is to imply efficient methods of stationary computational modeling using parallelization technology into a module for calculating non-stationary processes. A parallelization scheme with height decomposition has been developed. The calculation of non-stationary experiments using parallel technologies is carried out.
About the Authors
E. O. Soldatov
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
Kashirskoe sh. 31, Moscow, 115409
Yu. N. Volkov
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
Kashirskoe sh. 31, Moscow, 115409
А. Е. Kruglikov
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
Kashirskoe sh. 31, Moscow, 115409
References
1. Ponomarev-Stepnoi N.N. et al. // Nucl. Eng. Des. 2003. V. 222. P. 215–229.
2. Zizin M.N. et al. // KERNTECHNIK. 2020. V. 85. No. 1. P. 4–8.
3. Volkov Y.N. et al. // J. Phys.: Conf. Ser. 2018. V. 1133. P. 012033.
4. Зизин М.Н. Интеллектуальная программная система ShIPRW для математического моделирования ядерных реакторов. [Intellectual Software System ShIPRW for Mathematical Simulation of Nuclear Reactors] // Препринт ИАЭ-6354/5. 2005.
5. Soldatov E.O. et al. // J. Phys.: Conf. Ser. 2020. V. 1689. P. 012074.
6. Askew J.R. et al. // J. Br. Nucl. Energy Soc. 1966. V. 5. P. 564–585.
7. Nakamura S. Applied Numerical Methods with Software. 1991. Upper Saddle River: Prentice-Hall.
8. Crouzet N. et al. // Nucl. Sci. Eng. 1996. V. 123. No. 2. P. 206–214.
Review
For citations:
Soldatov E.O., Volkov Yu.N., Kruglikov А.Е. Parallel Calculation of Non-Stationary Processes in the Nuclear Reactor. Nuclear Physics and Engineering. 2020;11(6):342-347. (In Russ.) https://doi.org/10.1134/S2079562920060548
Views:
25
Email this article 