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Reaction-diffusion fronts in systems with concentration-dependent diffusivities.
Polanowski, Piotr; Koza, Zbigniew.
Afiliación
  • Polanowski P; Department of Molecular Physics, Technical University of Lódz, Zeromskiego 116, 90-924 Lódz, Poland.
Phys Rev E Stat Nonlin Soft Matter Phys ; 74(3 Pt 2): 036103, 2006 Sep.
Article en En | MEDLINE | ID: mdl-17025704
We examine properties of a reaction front that forms in irreversible reaction-diffusion systems with concentration-dependent diffusivities. We study two different models of such systems and find that in the limit of a vanishingly small diffusivity of the reaction product, the reaction front dynamics enters a separate universality class, with the front width asymptotically tending to a constant value, and the reaction rate at the reaction front center diminishing with time t as t(-1/2). This behavior can be also observed in systems with nonvanishing (but small) diffusivity of the reaction product at intermediate times.
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Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Phys Rev E Stat Nonlin Soft Matter Phys Asunto de la revista: BIOFISICA / FISIOLOGIA Año: 2006 Tipo del documento: Article País de afiliación: Polonia
Buscar en Google
Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Phys Rev E Stat Nonlin Soft Matter Phys Asunto de la revista: BIOFISICA / FISIOLOGIA Año: 2006 Tipo del documento: Article País de afiliación: Polonia