Summary
Dynamic variants of modified block incomplete factorization with modulated additive perturbations have been introduced recently and found to be superior to the standard block methods, in particular when applied to difficult problems for which the usual modified version gives rise to strongly isolated largest eigenvalues. We show here that in the case where the PDE coefficients are strongly anisotropic, care should be taken to provide some enough selection of the perturbed nodes in order to avoid a severe loss of efficiency.
Research supported by the “Programme d’impulsion en Technologie de l’lnformation” financed by Belgiam State, under contrat Nr. IT/IF/14.
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© 1993 Friedr. Vieweg & Sohn Verlagsgesellschaft mbH, Braunschweig/Wiesbaden
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monga-Made, M. (1993). Empirically modified block incomplete factorizations. In: Hackbusch, W., Wittum, G. (eds) Incomplete Decomposition (ILU) — Algorithms, Theory, and Applications. Notes on Numerical Fluid Mechanics (NNFM), vol 29. Vieweg+Teubner Verlag, Wiesbaden. https://doi.org/10.1007/978-3-322-85732-3_8
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DOI: https://doi.org/10.1007/978-3-322-85732-3_8
Publisher Name: Vieweg+Teubner Verlag, Wiesbaden
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