Abstract
We study the asymptotic behaviour of the so-called effectiveness factor ηε of a nonlinear diffusion equation that occurs on the boundary of periodically distributed inclusions (or particles) in an ε-periodic medium. Here, ε is a small parameter related to the characteristic size of the inclusions, which, in the homogenization process, will tend to 0. The inclusions are modeled as homothecy of a fixed pellet T, rescaled by a factor r(ε). We study the cases in which r(ε) = O(εα), known as big holes, for α = 1, as well as non-critical small holes, for
. We will prove the existence of some convex shapes which maximize the effectiveness of the homogenized problem. In particular, we deduce that for small holes the sphere is the domain of highest effectiveness.
Similar content being viewed by others
References
R. Aris and W. Strieder, Variational Methods Applied to Problems of Diffusion and Reaction, vol. 24 of Springer Tracts in Natural Philosophy, Springer-Verlag, New York, 1973.
C. Bandle, A note on Optimal Domains in a Reaction-Diffusion Problem, Zeitschrift für Analysis und ihre Answendungen, 4 (3) (1985), pp. 207–213.
H. Brézis, Monotonicity Methods in Hilbert Spaces and Some Applications to Nonlinear Partial Differential Equations, in Contributions to Nonlinear Functional Analysis, E. Zarantonello, ed., Academic Press, Inc., New York, 1971, pp. 101–156.
G. Buttazzo and P. Guasoni, Shape Optimization problems over classes of convex domains, Journal of Convex Analysis, 4,2 (1997), pp. 343–352.
I. Chourabi and P. Donato, Homogenization and correctors of a class of elliptic problems in perforated domains, Asymptotic Analysis, 92 (2015), pp. 1–43.
D. Cioranescu and P. Donato, Homogénéisation du probleme de Neumann non homogène dans des ouverts perforés, Asymptotic Analysis, 1 (1988), pp. 115–138.
D. Cioranescu, P. Donato, and R. Zaki, Asymptotic behavior of elliptic problems in perforated domains with nonlinear boundary conditions, Asymptotic Analysis, 53 (2007), pp. 209–235.
D. Cioranescu and J. S. J. Paulin, Homogenization in open sets with holes, Journal of Mathematical Analysis and Applications, 71 (1979), pp. 590–607.
C. Conca, J. I. Diaz, A. Linan, and C. Timofte, Homogenization in Chemical Reactive Flows, Electronic Journal of Differential Equations, 40 (2004), pp. 1–22.
C. Conca, J. I. Díaz, and C. Timofte, Effective Chemical Process in Porous Media, Mathematical Models and Methods in Applied Sciences, 13 (2003), pp. 1437–1462.
C. Conca and P. Donato, Non-homogeneous Neumann problems in domains with small holes, Modélisation Mathématique et Analyse Numerique, 22 (1988), pp. 561–607.
G. Dal Maso, An Introduction to Γ-Convergence, Progress in Nonlinear Differential Equations, Birkhäuser Boston, Boston, Ma, 1993.
J. I. Díaz, Nonlinear Partial Differential Equations and Free Boundaries, Vol.I.: Elliptic equations, Research Notes in Mathematics, Pitman, London, 1985.
J. I. Díaz and D. Gómez-Castro, Steiner symmetrization for concave semilinear elliptic and parabolic equations and the obstacle problem, in Dynamical Systems and Differential Equations, Aims Proceedings 2015 Proceedings of the 10th Aims International Conference (Madrid, Spain), American Institute of Mathematical Sciences, nov 2015, pp. 379–386.
J. I. Díaz and D. Gómez-Castro, On the Effectiveness of Wastewater Cylindrical Reactors: an Analysis Through Steiner Symmetrization, Pure and Applied Geophysics, 173 (2016), pp. 923–935.
J. I. Díaz, D. Gómez-Castro, A. V. Podol’skii, and T. A. Shaposhnikova, Homogenization of the p-Laplace operator with nonlinear boundary condition on critical size particles: identifying the strange terms for some non smooth and multivalued operators, Doklady Mathematics, 94 (2016), pp. 387–392.
J. I. Díaz, D. Gomez-Castro, and C. Timofte, On the influence of pellet shape on the effectiveness factor of homogenized chemical reactions, in Proceedings Of The Xxiv Congress On Differential Equations And Applications Xiv Congress On Applied Mathematics, 2015, pp. 571–576.
J. I. Díaz, J.-M. Morel, and L. Oswald, An elliptic equation with singular nonlinearity, Communications in Partial Differential Equations, 12 (1987), pp. 1333—1345.
M. Gahn, M. Neuss-Radu, and P. Knabner, Homogenization of Reaction-Diffusion Processes in a Two-Component Porous Medium with Nonlinear Flux Conditions at the Interface, Siam Journal on Applied Mathematics, 76 (2016), pp. 1819—1843.
M. V. Goncharenko, Asymptotic behavior of the third boundary-value problem in domains with fine-grained boundaries, Proceedings of the Conference “Homogenization and Applications to Material Sciences” (Nice, 1995), Gakuto (1997), pp. 203–213.
J. Haslinger and J. Dvorak, Optimum Composite Material Design, Esaim Mathematical Modelling and Numerical Analysis, 1 (1995), pp. 657–686.
D. Kinderlehrer and G. Stampacchia, An introduction to variational inequalities and their applications, vol. 31, Academic Press, New York, 1980.
J. L. Lions, Quelques Méthodes de Résolution pour les Problèmes aux Limites non Linéaires, Dunod, Paris, 1969.
O. A. Oleinik and T. A. Shaposhnikova, On the homogenization of the Poisson equation in partially perforated domains with arbitrary density of cavities and mixed type conditions on their boundary, Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni, 7 (1996), pp. 129–146.
O. Pironneau, Optimal Shape Design for Elliptic Equations, Springer Series in Computational Physics, Springer-Verlag, Berlin, 1984.
N. Van Goethem, Variational problems on classes of convex domains, Communications in Applied Analysis, 8 (2004), pp. 353–371.
M. N. Zubova and T. A. Shaposhnikova, Homogenization of boundary value problems in perforated domains with the third boundary condition and the resulting change in the character of the nonlinearity in the problem, Differential Equations, 47 (2011), pp. 78–90.
M. N. Zubova and T. A. Shaposhnikova, Averaging of boundary-value problems for the Laplace operator in perforated domains with a nonlinear boundary condition of the third type on the boundary of cavities, Journal of Mathematical Sciences, 190 (2013), pp. 181–193.
Author information
Authors and Affiliations
Corresponding author
Additional information
Dedicated to an exceptional mathematician, David Kinderlehrer, with admiration.
The research of D. Gómez-Castro is supported by a FPU fellowship from the Spanish government. The research of J.I. Díaz and D. Gómez-Castro was partially supported by the project ref. MTM 2014-57113-P of the DGISPI (Spain).
Rights and permissions
About this article
Cite this article
Díaz, J.I., Gómez-Castro, D. & Timofte, C. The Effectiveness Factor of Reaction-Diffusion Equations: Homogenization and Existence of Optimal Pellet Shapes. J Elliptic Parabol Equ 2, 119–129 (2016). https://doi.org/10.1007/BF03377396
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF03377396