کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8067348 1521098 2017 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of 3-D moderator flow configurations on the reactivity of CANDU nuclear reactors
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
Effect of 3-D moderator flow configurations on the reactivity of CANDU nuclear reactors
چکیده انگلیسی
The reactivity of nuclear reactors can be affected by thermal conditions prevailing within the moderator. In CANDU reactors, the moderator and the coolant are mechanically separated but not necessarily thermally isolated. Hence, any variation of moderator flow properties may change the reactivity. Until now, nuclear reactor calculations have been performed by assuming uniform moderator flow temperature distribution. However, CFD simulations have predicted large time dependent flow fluctuations taking place inside the calandria, which can bring about local temperature variations that can exceed 50 °C. This paper presents robust CANDU 3-D CFD moderator simulations coupled to neutronic calculations. The proposed methodology makes it possible to study not only different moderator flow configurations but also their effects on the reactor reactivity coefficient.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Nuclear Energy - Volume 99, January 2017, Pages 136-150
نویسندگان
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