کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4641610 1341314 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
New breakdown-free variant of AINV method for nonsymmetric positive definite matrices
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات ریاضیات کاربردی
پیش نمایش صفحه اول مقاله
New breakdown-free variant of AINV method for nonsymmetric positive definite matrices
چکیده انگلیسی

This paper proposes a new breakdown-free preconditioning technique, called SAINV-NS, of the AINV method of Benzi and Tuma for nonsymmetric positive definite matrices. The resulting preconditioner which is an incomplete factorization of the inverse of a nonsymmetric matrix will be used as an explicit right preconditioner for QMR, BiCGSTAB and GMRES(m) methods. The preconditoner is reliable (pivot breakdown can not occur) and effective at reducing the number of iterations. Some numerical experiments on test matrices are presented to show the efficiency of the new method and comparing to the AINV-A algorithm.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational and Applied Mathematics - Volume 219, Issue 1, 15 September 2008, Pages 72–80
نویسندگان
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