Description and implementation of an algebraic multigrid preconditioner for H1-conforming finite element schemes
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| Nhiều tác giả: | , , , |
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| Định dạng: | artículo original |
| Trạng thái: | Versión publicada |
| Ngày xuất bản: | 2020 |
| Miêu tả: | This paper presents detailed aspects regarding the implementation of the Finite Element Method (FEM) to solve a Poisson’s equation with homogeneous boundary conditions. The aim of this paper is to clarify details of this implementation, such as the construction of algorithms, implementation of numerical experiments, and their results. For such purpose, the continuous problem is described, and a classical FEM approach is used to solve it. In addition, a multilevel technique is implemented for an efficient resolution of the corresponding linear system, describing and including some diagrams to explain the process and presenting the implementation codes in MATLAB®. Finally, codes are validated using several numerical experiments. Results show an adequate behavior of the preconditioner since the number of iterations of the PCG method does not increase, even when the mesh size is reduced. |
| Quốc gia: | Portal de Revistas UNA |
| Tổ chức giáo dục: | Universidad Nacional de Costa Rica |
| Repositorio: | Portal de Revistas UNA |
| Ngôn ngữ: | Inglés |
| OAI Identifier: | oai:www.revistas.una.ac.cr:article/13792 |
| Truy cập trực tuyến: | https://www.revistas.una.ac.cr/index.php/uniciencia/article/view/13792 |
| Từ khóa: | Finite element methods H1-conforming schemes low-order approximations multilevel techniques computational implementation MATLAB® Métodos de elementos finitos esquemas H1 conformes aproximaciones de bajo orden técnicas multiniveles implementación computacional |