Journal
JOURNAL OF ENGINEERING MATHEMATICS
Volume 130, Issue 1, Pages -Publisher
SPRINGER
DOI: 10.1007/s10665-021-10159-7
Keywords
Asymptotic solutions; Monostable cubic reaction term; Reaction-diffusion equations
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The evolution of solutions of a class of scalar nonlinear hyperbolic reaction-diffusion equations with relaxation time and monostable cubic reaction function was studied. It was found that the large-time structure of the solution is determined by the evolution of a propagating wave-front, which can take one of three forms depending on the specific values of the problem parameters.
We consider the evolution of the solution of a class of scalar nonlinear hyperbolic reaction-diffusion equations which incorporate a relaxation time and with a reaction function given by a monostable cubic polynomial. An initial-value problem is studied when the prescribed starting data are given by a simple step function. It is established that the large-time structure of the solution is governed by the evolution of a propagating wave-front. The character of this front can be one of three forms, either reaction-diffusion, reaction-relaxation or reaction-relaxation-diffusion, which is relevant and depends on the particular values of the problem parameters that describe the underlying reaction polynomial.
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