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Memorias de investigación
Artículos en revistas:
Impact of the homogenization level, nodal or pin-by-pin, on the uncertainty quantification with core simulators
Año:2018
Áreas de investigación
  • Ingenierías
Datos
Descripción
This paper assesses the impact of the homogenization level (nodal or pin-by-pin) on the uncertainties predicted by core simulators, highlighting the need of calculations at pin level for a reliable estimate of uncertainties in hot channel factors. In order to perform the analysis, two methodologies for nuclear data uncertainty quantification in stand-alone neutronics calculations have been implemented in the core simulator COBAYA. The first one is based on first-order perturbation theory and allows sensitivity/uncertainty analysis in the multiplication factor. The second one is based on random sampling and allows the uncertainty propagation in all responses computed by the code. Both methodologies are used in conjunction with SCALE system, which provides the capabilities to propagate the nuclear data uncertainties into the few-group constants required for the diffusion calculations. These methodologies are validated using a simplified pin-cell and a fuel assembly, and then applied to a full 3D core in the context of the OECD/NEA UAM benchmark (Uncertainty Analysis in Best-Estimate Modeling for Design, Operation and Safety Analysis of LWRs).
Internacional
Si
JCR del ISI
Si
Título de la revista
Progress in Nuclear Energy
ISSN
0149-1970
Factor de impacto JCR
1,313
Información de impacto
Datos JCR del año 2016
Volumen
104
DOI
10.1016/j.pnucene.2017.10.001
Número de revista
Desde la página
218
Hasta la página
228
Mes
ABRIL
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Emilio Castro Gonzalez (UPM)
  • Autor: Santiago Sanchez-Cervera Huerta (UPM)
  • Autor: Nuria Garcia Herranz (UPM)
  • Autor: Diana Cuervo Gomez (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Centro o Instituto I+D+i: Instituto de Fusión Nuclear "Guillermo Velarde"
  • Departamento: Ingeniería Energética
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