کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7156213 1462644 2018 29 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Block-selective algebraic multigrid for implicitly coupled pressure-velocity system
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
پیش نمایش صفحه اول مقاله
Block-selective algebraic multigrid for implicitly coupled pressure-velocity system
چکیده انگلیسی
To remedy the problem, we have implemented a Block-Selective Algebraic Multigrid in foam-extend which is a community driven fork of OpenFOAM, an open-source CFD software library for arbitrary polyhedral Finite Volume Method. Coarsening is done by selecting a set of equations which will be solved on the coarse level, based on a heuristic algorithm. Prolongation operator is calculated from the approximation of the algebraically smooth error. Restriction and coarse level matrix are formed based on a variational principle for a symmetric positive-definite matrix. To apply the algorithm on the matrix arising from the discretisation of the implicitly coupled pressure-velocity system, a primary matrix must be chosen by calculating a norm of the block-coefficient.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Fluids - Volume 167, 15 May 2018, Pages 100-110
نویسندگان
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