Numerical Analysis
Transparent boundary conditions for a class of boundary value problems in some ramified domains with a fractal boundary
[Conditions aux limites transparentes pour des problèmes aux limites dans des domaines ramifiés à frontière fractale]
Comptes Rendus. Mathématique, Tome 342 (2006) no. 8, pp. 605-610.

On considère une classe de problèmes aux limites dans des domaines autosimilaires ramifiés, avec des équations de Laplace ou d'Helmholtz. On s'intéresse à l'obtention de conditions aux limites transparentes, permettant le calcul de la solution dans un domaine obtenu en arrêtant la construction après un nombre fini d'étapes.

We consider some boundary value problems in self-similar ramified domains, with Laplace and Helmholtz equations. We discuss transparent boundary conditions. These conditions permit computing the restriction of the solutions to domains obtained by stopping the geometric construction after a finite number of steps.

Reçu le :
Accepté le :
Publié le :
DOI : 10.1016/j.crma.2006.02.024
Achdou, Yves 1, 2 ; Sabot, Christophe 3 ; Tchou, Nicoletta 4

1 UFR mathématiques, université Paris 7, case 7012, 75251 Paris cedex 05, France
2 Laboratoire Jacques-Louis Lions, université Paris 6, 75252 Paris cedex 05, France
3 CNRS, UMPA, UMR 5669, 46, allee d'Italie, 69364 Lyon cedex 07, France
4 IRMAR, université de Rennes 1, 35042 Rennes cedex, France
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     title = {Transparent boundary conditions for a class of boundary value problems in some ramified domains with a fractal boundary},
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Achdou, Yves; Sabot, Christophe; Tchou, Nicoletta. Transparent boundary conditions for a class of boundary value problems in some ramified domains with a fractal boundary. Comptes Rendus. Mathématique, Tome 342 (2006) no. 8, pp. 605-610. doi : 10.1016/j.crma.2006.02.024. http://www.numdam.org/articles/10.1016/j.crma.2006.02.024/

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[2] Y. Achdou, C. Sabot, and N. Tchou, Transparent boundary conditions for Helmholtz equation in some ramified domains with a fractal boundary, submitted for publication

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[8] Mosco, U.; Vivaldi, M.A. Variational problems with fractal layers, Rend. Accad. Naz. Sci. XL Mem. Mat. Appl. (5), Volume 27 (2003), pp. 237-251

[9] C. Sabot, Electrical networks, symplectic reductions, and application to the renormalization map of self-similar lattices, Proc. Sympos. Pure Math., “A Mandelbrot Jubilee”, in press

[10] Sabot, C. Spectral properties of self-similar lattices and iteration of rational maps, Mém. Soc. Math. France (N.S.), Volume 92 (2003), pp. 1-104

Cité par Sources :

The research of Yves Achdou and Nicoletta Tchou was partially supported by the ACINIM “LePoumonVousDisJe”. Le travail de Yves Achdou et de Nicoletta Tchou a été partiellement supporté par l'ACINIM “LePoumonVousDisJe”.