کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6874355 1441159 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Convergence and complexity study of GMRES variants for solving multi-frequency elastic wave propagation problems
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نظریه محاسباتی و ریاضیات
پیش نمایش صفحه اول مقاله
Convergence and complexity study of GMRES variants for solving multi-frequency elastic wave propagation problems
چکیده انگلیسی
In this paper we present a comparison study of three different frameworks of iterative Krylov methods that we have recently developed for the simultaneous numerical solution of frequency-domain wave propagation problems when multiple wave frequencies are present. The three approaches have in common that they require the application of a single shift-and-invert preconditioner at a suitable seed frequency. In particular for three-dimensional problems, we present the efficient application of the elastic shift-and-invert preconditioner by means of an additive coarse grid correction. The focus of the present work lies, however, on the performance of the respective iterative method. We conclude with numerical examples that provide guidance concerning the suitability of the three methods.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Science - Volume 26, May 2018, Pages 285-293
نویسندگان
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