کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1730605 1521230 2006 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
BWR core-wide stability analysis with respect to dominant feedback mechanisms and characteristic poles
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
BWR core-wide stability analysis with respect to dominant feedback mechanisms and characteristic poles
چکیده انگلیسی
BWR core-wide stability is studied from the viewpoint of linear dynamic stability treated via poles of a closed-loop transfer function. The quantitative study is performed using a BWR noise model describing neutronic and thermal-hydraulic core dynamics. Transfer functions of neutron power to reactivity and core inlet flow are derived in explicit forms and their poles are evaluated both numerically and analytically. It is shown that the characteristic poles may be classed into three groups relating to neutronic process, fuel heat transfer and core void dynamics. In particular, the poles for the void dynamics take complex values and hence give rise to core-wide damped oscillation of neutron power. Furthermore, the study of characteristic poles serves for the stability analysis of the Ringhals-1 benchmark test data. It is shown and clarified that two stability indexes, decay ratio and resonance frequency, have clear dependence on reactor power and core inlet flow.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Nuclear Energy - Volume 33, Issue 1, January 2006, Pages 43-52
نویسندگان
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