کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8084622 1521736 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The multilevel quasidiffusion method with multigrid in energy for eigenvalue transport problems
ترجمه فارسی عنوان
روش چندبعدی چند سطحی با چند اشکال در انرژی برای مسائل مربوط به حمل و نقل اختصاصی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
چکیده انگلیسی
A multilevel iterative method for solving multigroup neutron transport k-eigenvalue problems in two-dimensional geometry is developed. This method is based on a system of group low-order quasidiffusion (LOQD) equations defined on a sequence of coarsening energy grids. The spatial discretization of the LOQD equations uses compensation terms which make it consistent with a high-order transport scheme on a given spatial grid. Different multigrid algorithms are applied to solve the multilevel system of group LOQD equations on grids in energy. The eigenvalue is evaluated from the LOQD problem on a coarsest grid. To further improve the efficiency of iterative schemes hybrid multigrid algorithms are developed. The numerical results of tests with a large number groups are presented to demonstrate performance of the proposed iterative schemes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Nuclear Energy - Volume 101, Part C, November 2017, Pages 401-408
نویسندگان
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