A New Block-Diagonal Preconditioner for a Class of $$3\times 3$$ Block Saddle Point Problems
نویسندگان
چکیده
We study the performance of a new block preconditioner for class \(3\times 3\) saddle point problems which arise from finite-element methods solving time-dependent Maxwell equations and some other practical problems. also estimate lower upper bounds eigenvalues preconditioned matrix. Finally, we examine our to accelerate convergence speed GMRES method shows effectiveness preconditioner.
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ژورنال
عنوان ژورنال: Mediterranean Journal of Mathematics
سال: 2022
ISSN: ['1660-5454', '1660-5446']
DOI: https://doi.org/10.1007/s00009-021-01973-5