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Approximate controllability of linear parabolic equations in perforated domains

Patrizia DonatoAïssam Nabil — 2001

ESAIM: Control, Optimisation and Calculus of Variations

In this paper we consider an approximate controllability problem for linear parabolic equations with rapidly oscillating coefficients in a periodically perforated domain. The holes are ε -periodic and of size ε . We show that, as ε 0 , the approximate control and the corresponding solution converge respectively to the approximate control and to the solution of the homogenized problem. In the limit problem, the approximation of the final state is alterated by a constant which depends on the proportion...

Which sequences of holes are admissible for periodic homogenization with Neumann boundary condition?

Alain DamlamianPatrizia Donato — 2002

ESAIM: Control, Optimisation and Calculus of Variations

In this paper we give a general presentation of the homogenization of Neumann type problems in periodically perforated domains, including the case where the shape of the reference hole varies with the size of the period (in the spirit of the construction of self-similar fractals). We shows that H 0 -convergence holds under the extra assumption that there exists a bounded sequence of extension operators for the reference holes. The general class of Jones-domains gives an example where this result applies....

Approximate Controllability of linear parabolic equations in perforated domains

Patrizia DonatoAïssam Nabil — 2010

ESAIM: Control, Optimisation and Calculus of Variations

In this paper we consider an approximate controllability problem for linear parabolic equations with rapidly oscillating coefficients in a periodically perforated domain. The holes are -periodic and of size . We show that, as ε → 0, the approximate control and the corresponding solution converge respectively to the approximate control and to the solution of the homogenized problem. In the limit problem, the approximation of the final state is alterated by a constant which depends on the proportion...

Which sequences of holes are admissible for periodic homogenization with Neumann boundary condition?

Alain DamlamianPatrizia Donato — 2010

ESAIM: Control, Optimisation and Calculus of Variations

In this paper we give a general presentation of the homogenization of Neumann type problems in periodically perforated domains, including the case where the shape of the reference hole varies with the size of the period (in the spirit of the construction of self-similar fractals). We shows that -convergence holds under the extra assumption that there exists a bounded sequence of extension operators for the reference holes. The general class of Jones-domains gives an example where...

Corrector results for a parabolic problem with a memory effect

Patrizia DonatoEditha C. Jose — 2010

ESAIM: Mathematical Modelling and Numerical Analysis

The aim of this paper is to provide the correctors associated to the homogenization of a parabolic problem describing the heat transfer. The results here complete the earlier study in [Jose, (2009) 189–222] on the asymptotic behaviour of a problem in a domain with two components separated by an -periodic interface. The physical model established in [Carslaw and Jaeger, The Clarendon Press, Oxford (1947)] prescribes on the interface the condition that the flux of the temperature...

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