نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه شبیهسازی چندمقیاسی- چند فیزیکی و آنالیز محاسباتی، مؤسسه تحقیقات پیشرفته شبیهسازی و جداسازی، ﺻﻨﺪوق ﭘﺴﺘﯽ: 5931-143995، ﺗﻬﺮان- اﯾﺮان
2 ﭘﮋوﻫﺸﮑﺪه رآﮐﺘﻮر و اﯾﻤﻨﯽ ﻫﺴﺘﻪای، ﭘﮋوﻫﺸﮕﺎه علوم و فنون ﻫﺴﺘﻪای، ﺳﺎزﻣﺎن اﻧﺮژی اﺗﻤﯽ اﯾﺮان، ﺻﻨﺪوق ﭘﺴﺘﯽ: 836-14395، ﺗﻬﺮان- اﯾﺮان
کلیدواژهها
عنوان مقاله English
نویسندگان English
From an economic perspective, increasing nuclear fuel burnup (up to 50 GWd/t) and thereby extending reactor cycles are compelling reasons to develop models that incorporate High Burnup Structure (HBS) phenomena into fuel performance codes. This research focuses on investigating the behavior of fission gases within HBS by implementing two semi-empirical models in the MSFGR-02 code. These models describe the formation of HBS, encompassing polygonization (recrystallization) and the release of intra-granular fission gas. The study utilizes grain size measurements obtained from references and applies them to radial positions where data reconstruction was incomplete. This approach yields semi-empirical relationships for grain radius size and restructured volumetric fraction as functions of fuel burnup. Comparisons between changes in fission gas concentration during irradiation until HBS formation and experimental data from references demonstrate acceptable agreement.
کلیدواژهها English