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Title:	Front propagation in spatially modulated media
Author:	Armero, J.; Lacasta Palacio, Ana María; Ramírez de la Piscina Millán, Laureano; Casademunt, Jaume; Sancho, Jose Maria; Sagués Mestre, Francesc
Other authors:	Universitat Politècnica de Catalunya. Departament de Física Aplicada; Universitat Politècnica de Catalunya. NOLIN - Física No-Lineal i Sistemes Fora de l'Equilibri
Abstract:	A two-dimensional reaction-diffusion front which propagates in a modulated medium is studied. The modulation consists of a spatial variation of the local front velocity in the transverse direction to that of the front propagation. We study analytically and numerically the final steady-state velocity and shape of the front, resulting from a nontrivial interplay between the local curvature effects and the global competition process between different maxima of the control parameter. The transient dynamics of the process is also studied numerically and analytically by means of singular perturbation techniques.
Abstract:	Peer Reviewed
Subject(s):	-Àrees temàtiques de la UPC::Física -Nonlinear systems -Nonlinear dynamics -Front propagation -Chemical waves -Excitable media -Inhomogeneous media -Sistemes no lineals
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Document type:	Article
Published by:	American Physical Society
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