کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8085552 | 1521759 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Estimation of self-shielded cross section by employing interference correction factors in subgroup method
ترجمه فارسی عنوان
تخمین سطح مقطع خود محافظت شده با استفاده از عوامل تصحیح تداخل در روش زیرگروه
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
چکیده انگلیسی
The purpose of this study is to conserve the effective cross section by subgroup method in the presence of resonance interference effect. The technique of handling the resonance interference among resonance isotopes is improved through the introduction of interference correction factors in subgroup method. A mathematical relationship based on subgroup formulism is derived to compute the interference correction factors. This new approach has been implemented in method of characteristics (MOC) based 3-D neutron transport calculations code nTRACER. Sample calculations have been performed for various pin and assembly problems with satisfactory performance. The calculation results for effective resonance cross sections show maximum error of less than 4% and an improvement in reactivity estimation by 24Â pcm-101Â pcm for fuel pin problems. Whereas the computed results show improvement in reactivity estimation by 59-134Â pcm for fuel assembly problems and 300Â pcm for MOX fuel respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Nuclear Energy - Volume 79, March 2015, Pages 150-157
Journal: Progress in Nuclear Energy - Volume 79, March 2015, Pages 150-157
نویسندگان
Muhammad Sohail, Myung Hyun Kim,