کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8066850 | 1521076 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Accurate resonance absorption calculation for fuel pins with non-uniform intra-pellet temperature profile based on ultra-fine-group slowing-down calculations
ترجمه فارسی عنوان
محاسبه جذب رزونانس دقیق برای پین های سوخت با مشخصات دمایی درون پلت غیر یکنواخت براساس محاسبات ضعیف گروه بندی فوق العاده خوب
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
روش فوق العاده خوب گروه، مشخصات دمایی یکنواخت، رزونانس خود محافظ،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
چکیده انگلیسی
A new method based on the ultra-fine-group slowing down calculation and the temperature-perturbation-technique is proposed to obtain accurate resonance absorption reaction rate of the fuel pin with non-uniform temperature profiles. It is proved theoretically and numerically that the conventional model using uniform collision probabilities between sub-rings of the fuel to treat non-uniform temperature will underestimate the resonance absorption reaction rate of 238U for the inner region of the fuel. Using the heterogeneous ultra-fine-slowing down solver which is capable of treating two independent resonant absorbers, a new calculation scheme is developed based on the assumption that the influence on the spectrum along the radius from the non-uniform temperature distribution can be decomposed into the influence from each independent sub-ring. Numerical results show that the new proposed method is capable of predicting the resonant absorption reaction rate with better accuracy without the on-line calculation of collision probabilities.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Nuclear Energy - Volume 120, October 2018, Pages 392-401
Journal: Annals of Nuclear Energy - Volume 120, October 2018, Pages 392-401
نویسندگان
Qian Zhang, Rong Jiang, Qiang Zhao, Liangzhi Cao, Hongchun Wu,