کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8069224 1521123 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sensitivity and uncertainty analysis for UO2 and MOX fueled PWR cells
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
Sensitivity and uncertainty analysis for UO2 and MOX fueled PWR cells
چکیده انگلیسی
This paper discusses the improvement of a method for calculating sensitivity coefficients of neutronics parameters relative to infinite dilution cross-sections because the conventional method neglects resonance self-shielding effect. In this study, the self-shielding effect is taken into account by using the intermediate resonance approximation in order to get accurate results in both high and low energy groups. The improved method is applied to calculate sensitivity coefficients and uncertainties of eigenvalue responses for UO2 and MOX (ThO2-UO2 and PuO2-UO2) fueled pressurized water reactor cells. The verification of the improved method was performed by comparing the sensitivities with MCNP6 and TSUNAMI-1D. For uncertainty, calculation comparisons were done with TSUNAMI-1D, and we demonstrate that the differences are caused by the use of different covariance matrices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Nuclear Energy - Volume 75, January 2015, Pages 595-604
نویسندگان
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