A new pin-resolved ultra-fine-group method based on global–local resonance treatment framework

Rao, Junjie; Peng, Xingjie; Yu, Yingrui; Li, Qing; Wang, Kan

doi:10.1016/j.anucene.2021.108954

Cited by 1 publication

(2 citation statements)

References 11 publications

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“…In Eq. 15, the shadowing effect of region i in the fuel plate is assumed to be equal to that of the fuel plate and the assumption has no significant impact on effective cross sections (Rao et al, 2022). This pin-resolved ultra-fine-group with correction method is implemented with a MOC code.…”

Section: -D Pin-resolved Ultra-fine-group With Correction Methodsmentioning

confidence: 99%

“…The effective cross section was calculated by the ultra-fine-group method in the equivalent 1-D cylindrical model. Rao et al, (2022) proposed a new pin-resolved resonance self-shielding method where the effective cross section was calculated in the infinite lattice system and corrected by the equivalence theory with Dancoff factor. These pin-resolved resonance self-shielding methods use the Dancoff factor to consider the shadowing effect and use the ultra-fine-group method to accurately estimate the effective cross section.…”

Section: Introductionmentioning

confidence: 99%

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Pin-resolved ultra-fine-group with correction method and its application to plate-type fuel reactor analysis

Rao

Peng

et al. 2023

Front. Energy Res.

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In order to perform the resonance calculation efficiently and accurately, several pin-resolved ultra-fine-group methods combining the ultra-fine-group method and Dancoff factor have been developed recently. The ultra-fine-group method is used to consider the self-shielding effect accurately in the 1-D fuel model, and the Dancoff factor is used to consider the shadowing effect in a lattice system. The pin-resolved ultra-fine-group with correction method, combining the ultra-fine-group method and Dancoff factor, is implemented in a transport code using the method of characteristic. In order to expand the application range, the pin-resolved method is extended for the plate-type fuel. Numerical results show good accuracy for the plate-type fuel reactor analysis.

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Section: -D Pin-resolved Ultra-fine-group With Correction Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%