کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11006986 | 1514136 | 2018 | 27 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Model of nuclear fuel pellets densification under irradiation and isothermal conditions: Application to UO2 fuels
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی هسته ای و مهندسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Model of nuclear fuel pellets densification under irradiation and isothermal conditions: Application to UO2 fuels Model of nuclear fuel pellets densification under irradiation and isothermal conditions: Application to UO2 fuels](/preview/png/11006986.png)
چکیده انگلیسی
The dimensional changes of a nuclear fuel in operation are strongly determined by two opposite effects. One of them is due to contraction of the as-fabricated pores, giving place to densification which is evident during the first stages of irradiation. This effect is counteracted by the swelling phenomenon provoked by the fission products that progressively accumulate in the fuel material. A model to evaluate the changes in fuel pellets porosity due to radiation and thermal effects taking into account the point defects flow to and from the pores is presented. A simplification of the model to assess the progress of porosity in isothermal re-sintering tests is also given. Simulations are compared with experimental data measured on UO2 fuel pellets with a variety of microstructures at different temperatures and radiation conditions, attaining a good agreement.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volume 510, November 2018, Pages 585-595
Journal: Journal of Nuclear Materials - Volume 510, November 2018, Pages 585-595
نویسندگان
Mauricio E. Cazado, Alicia C. Denis,