REMARKS ON THE ASYMPTOTIC BEHAVIOR OF SCALAR AUXILIARY VARIABLE (SAV) SCHEMES - Archive ouverte HAL Accéder directement au contenu
Pré-Publication, Document De Travail Année : 2019

REMARKS ON THE ASYMPTOTIC BEHAVIOR OF SCALAR AUXILIARY VARIABLE (SAV) SCHEMES

Anass Bouchriti
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Nour Eddine Alaa
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Résumé

We introduce a time semi-discretization of a damped wave equation by a SAV scheme with second order accuracy. The energy dissipation law is shown to hold without any restriction on the time step. We prove that any sequence generated by the scheme converges to a steady state (up to a subsequence). We notice that the steady state equation associated to the SAV scheme is a modified version of the steady state equation associated to the damped wave equation. We show that a similar result holds for a SAV fully discrete version of the Cahn-Hilliard equation and we compare numerically the two steady state equations.
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Dates et versions

hal-02354886 , version 1 (07-11-2019)

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Anass Bouchriti, Morgan Pierre, Nour Eddine Alaa. REMARKS ON THE ASYMPTOTIC BEHAVIOR OF SCALAR AUXILIARY VARIABLE (SAV) SCHEMES. 2019. ⟨hal-02354886⟩
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