Front propagation in spatially modulated media
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...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 1997 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/2598 |
| Acceso en línea: | https://hdl.handle.net/2117/2598 https://dx.doi.org/10.1103/PhysRevE.56.5405 |
| Access Level: | acceso abierto |
| Palabra clave: | Nonlinear systems Nonlinear dynamics Front propagation Chemical waves Excitable media Inhomogeneous media Sistemes no lineals Àrees temàtiques de la UPC::Física |
| Sumario: | 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. |
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