Optimization of a microreactor core's dimensions using metaheuristic methods

Autores

  • Nicolas Santana IEAv, ITA
  • Alexandre Caldeira IEAv ,
  • Angelo Passaro ,
  • Lamartine Guimaraes ,

DOI:

https://doi.org/10.15392/2319-0612.2022.1903

Palavras-chave:

Core optimization

Resumo

This article proposes the use of the multi-group diffusion equations with four groups to determine the dimensions of the microreactor of the TERRA project. With this intent, the values of the radius and height of the cylinder that represents the core, as well as its enrichment were optimized through a framework called LOF. This tool has several metaheuristics methods already implemented, which provides a considerable time gain. So any particular method implemented, or a combination of some of them, could be utilized without any concerns regarding implementation time. In addition to the application of the metaheuristic methods for the proposed optimization, there was also a concern about altering the search parameters used in each of the metaheuristics, which eventually caused an improvement in the results. With this method, the radius and height dimensions achieved were quite reasonable for a microreactor. As for the enrichment, the value of 19.75% was achieved, limited by the Non-Proliferation Treaty.

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Biografia do Autor

  • Alexandre Caldeira, IEAv,
    1.  

Referências

CHEN, Z.; ZHANG, Z.; XIE, J.; GUO, Q.;YU, T. Metaheuristic optimization method for compact reactor radiation shielding design based on genetic algorithm. Annals of Nuclear Energy, 2019, v. 134, p. 318-329.

VARIANSYAH, I.; BETZLER, B. R.; CHANDLER, D.; ILAS, G.; MARTIN, W. R. A metaheuristic optimization tool for high flux isotope reactor low-enriched uranium core design. Oak Ridge National Lab (ORNL), Oak Ridge, TN, USA. 2019.

DUDERSTADT, J. J.;HAMILTON, L. J. Nuclear Reactor Analysis, John Wiley & Sons, Inc., New York, USA, 1976.

NASCIMENTO, J. A. et al. Conceptual design and neutronic evaluation of a fast micro-reactor for utilization in space and oceans, Unpublished manuscript, 2013, vol. 1, pp. 1–199.

TEMPLIN, L. J. Reactor Physics Constants, ANL-5800, vol. 21., New York, USA, 1963.

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Publicado

29-10-2022

Edição

Seção

INAC 2021_XXII ENFIR_VII_ENIN

Como Citar

Optimization of a microreactor core’s dimensions using metaheuristic methods. Brazilian Journal of Radiation Sciences, Rio de Janeiro, Brazil, v. 10, n. 3A (Suppl.), 2022. DOI: 10.15392/2319-0612.2022.1903. Disponível em: https://bjrs.org.br/revista/index.php/REVISTA/article/view/1903. Acesso em: 16 jul. 2025.