کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5475321 1521094 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A perturbation-based susbtep method for coupled depletion Monte-Carlo codes
ترجمه فارسی عنوان
روش متداول مبتنی بر وقفه برای کدهای مونت کارلو تخلیه همراه است
کلمات کلیدی
مونت کارلو، کدهای مرتبط، تخلیه، تئوری اختلال عمومی، مار،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
چکیده انگلیسی
Coupled Monte Carlo (MC) methods are becoming widely used in reactor physics analysis and design. Many research groups therefore, developed their own coupled MC depletion codes. Typically, in such coupled code systems, neutron fluxes and cross sections are provided to the depletion module by solving a static neutron transport problem. These fluxes and cross sections are representative only of a specific time-point. In reality however, both quantities would change through the depletion time interval. Recently, Generalized Perturbation Theory (GPT) equivalent method that relies on collision history approach was implemented in Serpent MC code. This method was used here to calculate the sensitivity of each nuclide and reaction cross section due to the change in concentration of every isotope in the system. The coupling method proposed in this study also uses the substep approach, which incorporates these sensitivity coefficients to account for temporal changes in cross sections. As a result, a notable improvement in time dependent cross section behavior was obtained. The method was implemented in a wrapper script that couples Serpent with an external depletion solver. The performance of this method was compared with other existing methods. The results indicate that the proposed method requires substantially less MC transport solutions to achieve the same accuracy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Nuclear Energy - Volume 102, April 2017, Pages 236-244
نویسندگان
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