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Scaling of Reaction Fronts in the Presence of Disorder

Published online by Cambridge University Press:  15 February 2011

Mariela Araujo
Mariela Araujo*
Affiliation:
Intevep S.A. Apartado 76343, Caracas 1070A. Venezuela
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Abstract

A study of the dynamics of the reaction front that appears in diffusion-reaction systems of the form A + B → C with initially separated reactants in the presence of quenched disorder is presented. The scaling of the width of the front w is analyzed as a function of the “disorder strength” and the dimensionality of the system. It is shown that disorder strongly affects the width exponent α, ω tα even for d ≥ 2, where the mean field approximation is known to be valid. The scaling of the nearest neighbor distance, midpoint fluctuations and concentration profiles near the center of the front, are also studied.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 366: Symposium N – Dynamics in Small Confining Systems , 1994 , 403
Copyright
Copyright © Materials Research Society 1995

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