Abstract
In this article, we define the notion of block incremental unknowns for anisotropic elliptic equations. Written in a block structure, they are nothing more than the classical second order incremental unknowns in one space dimension. In particular, we obtain a priori estimates and we observe a significant gain in the condition number for stiff problems when compared with the classical two-dimensional second order incremental unknowns
Authors
A. Miranville
Université de Poitiers, France
A.C. Muresan
Romanian Academy of Sciences, “T. Popoviciu” Institute of Numerical Analysis, P.O. Box 68, 3400 Cluj-Napoca, Romania
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A. Miranville, A.C. Muresan, Block incremental unknowns for anisotropic elliptic equations, Applied Numerical Mathematics, Volume 42, Issue 4, September 2002, Pages 529-543,
doi: 10.1016/S0168-9274(01)00171-4
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0168-9274
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