Article de revue (2017)
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Abstract
The applicability of the algebraic collapsing acceleration (ACA) technique to the method of characteristics (MOC) in cases with scattering anisotropy and/or linear sources was investigated. Previously, the ACA was proven successful in cases with isotropic scattering and uniform (step) sources. A presentation is first made of the MOC implementation, available in the DRAGON5 code. Two categories of schemes are available for integrating the propagation equations: (1) the first category is based on exact integration and leads to the classical step characteristics (SC) and linear discontinuous characteristics (LDC) schemes and (2) the second category leads to diamond differencing schemes of various orders in space. The acceleration of these MOC schemes using a combination of the generalized minimal residual [GMRES(m)] method preconditioned with the ACA technique was focused on. Numerical results are provided for a two-dimensional (2D) eight-symmetry pressurized water reactor (PWR) assembly mockup in the context of the DRAGON5 code.
Mots clés
Method of characteristics; Linear discontinuous source; Algebraic collapsing acceleration; Generalized minimal residual acceleration method; DRAGON5 code
| Sujet(s): | 2700 Technologie de l'information > 2705 Logiciels et développement |
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| Département: | Département de génie mécanique |
| URL de PolyPublie: | https://publications.polymtl.ca/4938/ |
| Titre de la revue: | Nuclear Engineering and Technology (vol. 49, no 6) |
| Maison d'édition: | Elsevier Korea LLC |
| DOI: | 10.1016/j.net.2017.07.004 |
| URL officielle: | https://doi.org/10.1016/j.net.2017.07.004 |
| Date du dépôt: | 04 août 2022 14:26 |
| Dernière modification: | 27 sept. 2024 11:35 |
| Citer en APA 7: | Hébert, A. (2017). Acceleration of step and linear discontinuous schemes for the method of characteristics in DRAGON5. Nuclear Engineering and Technology, 49(6), 1135-1142. https://doi.org/10.1016/j.net.2017.07.004 |
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