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Robust exponential attractors for a phase-field system with memory

Robust exponential attractors for a phase-field system with memory H.G. Rotstein et al . proposed a nonconserved phase-field system characterized by the presence of memory terms both in the heat conduction and in the order parameter dynamics. These hereditary effects are represented by time convolution integrals whose relaxation kernels k and h are nonnegative, smooth and decreasing. Rescaling k and h properly, we obtain a system of coupled partial integrodifferential equations depending on two relaxation times ɛ and σ. When ɛ and σ tend to 0, the formal limiting system is the well-known nonconserved phase-field model proposed by G. Caginalp. Assuming the exponential decay of the relaxation kernels, the rescaled system, endowed with homogeneous Neumann boundary conditions, generates a dissipative strongly continuous semigroup S ɛ, σ ( t ) on a suitable phase space, which accounts for the past histories of the temperature as well as of the order parameter. Our main result consists in proving the existence of a family of exponential attractors $$\mathcal{E}_{\varepsilon ,\sigma } $$ for S ɛ, σ ( t ), with ɛ, σ ∈ (0, 1), whose symmetric Hausdorff distance from $$\mathcal{E}_{0,\,0} $$ tends to 0 in an explicitly controlled way. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Evolution Equations Springer Journals

Robust exponential attractors for a phase-field system with memory

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References (13)

Publisher
Springer Journals
Copyright
Copyright © 2005 by Birkhäuser Verlag, Basel
Subject
Mathematics; Analysis
ISSN
1424-3199
eISSN
1424-3202
DOI
10.1007/s00028-005-0199-6
Publisher site
See Article on Publisher Site

Abstract

H.G. Rotstein et al . proposed a nonconserved phase-field system characterized by the presence of memory terms both in the heat conduction and in the order parameter dynamics. These hereditary effects are represented by time convolution integrals whose relaxation kernels k and h are nonnegative, smooth and decreasing. Rescaling k and h properly, we obtain a system of coupled partial integrodifferential equations depending on two relaxation times ɛ and σ. When ɛ and σ tend to 0, the formal limiting system is the well-known nonconserved phase-field model proposed by G. Caginalp. Assuming the exponential decay of the relaxation kernels, the rescaled system, endowed with homogeneous Neumann boundary conditions, generates a dissipative strongly continuous semigroup S ɛ, σ ( t ) on a suitable phase space, which accounts for the past histories of the temperature as well as of the order parameter. Our main result consists in proving the existence of a family of exponential attractors $$\mathcal{E}_{\varepsilon ,\sigma } $$ for S ɛ, σ ( t ), with ɛ, σ ∈ (0, 1), whose symmetric Hausdorff distance from $$\mathcal{E}_{0,\,0} $$ tends to 0 in an explicitly controlled way.

Journal

Journal of Evolution EquationsSpringer Journals

Published: Nov 1, 2005

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