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Using the Cayley transform and finite elements to solve linear time dependent problems

✍ Scribed by J. Peterson

Publisher: Elsevier Science
Year: 2004
Tongue: English
Weight: 523 KB
Volume: 48
Category: Article
ISSN: 0898-1221
DOI: 10.1016/j.camwa.2004.10.008

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✦ Synopsis

In this paper the approach of using the Cayley transformation to evaluate the solution of a linear parabolic equation is coupled with standard finite-element methods. The potential advantage of this approach is that the solution at a fixed time is written in terms of a Linear combination of solutions obtained by solving a time-independent problem where the coefficients in the linear combination are functions of time. In comparison with standard discretization methods this approach requires fewer "pseudotime steps", i.e., fewer terms in the linear combination of solutions, to obtain the solution at a fixed time.

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