Telescopic projective methods for parabolic differential equations

Authors:
C. W. Gear;Ioannis G. Kevrekidis
Affiliations:
NEC Research Institute, 17 Honey Book Drive, Princeton, NJ;Department of Chemical Engineering, Princeton University, Princeton
Venue:
Journal of Computational Physics
Year:
2003

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Abstract

Projective methods were introduced in an earlier paper [C.W. Gear, I.G. Kevrekidis, Projective Methods for Stiff Differential Equations: problems with gaps in their eigenvalue spectrum, NEC Research Institute Report 2001-029, available from http://www.neci.nj.nec.com/homepages/cwg/projective.pdf Abbreviated version to appear in SISC] as having potential for the efficient integration of problems with a large gap between two clusters in their eigenvalue spectrum, one cluster containing eigenvalues corresponding to components that have already been damped in the numerical solution and one corresponding to components that are still active. In this paper we introduce iterated projective methods that allow for explicit integration of stiff problems that have a large spread of eigenvalues with no gaps in their spectrum as arise in the semi-discretization of PDEs with parabolic components.