The critical exponent for a weakly coupled system of the generalized Fujita type reaction-diffusion equations

1995 ◽  
Vol 46 (3) ◽  
pp. 366-383 ◽  
Author(s):  
Yoshitaka Uda
Keyword(s):  
Critical Exponent ◽  
Reaction Diffusion ◽  
Coupled System ◽  
Reaction Diffusion Equations ◽  
Diffusion Equations ◽  
Type Reaction ◽  
Weakly Coupled ◽  
Weakly Coupled System

A FEM FOR A SYSTEM OF SINGULARLY PERTURBED REACTION-DIFFUSION EQUATIONS WITH DISCONTINUOUS SOURCE TERM

2013 ◽  
Vol 10 (05) ◽  
pp. 1350057
Author(s):  
A. RAMESH BABU ◽  
N. RAMANUJAM
Keyword(s):  
Reaction Diffusion ◽  
Coupled System ◽  
Perturbation Parameter ◽  
Reaction Diffusion Equations ◽  
Diffusion Equations ◽  
Shishkin Meshes ◽  
Weakly Coupled ◽  
Weakly Coupled System ◽  
Discontinuous Source Term ◽  
Interior Layers

In this paper, we consider a weakly coupled system of two reaction-diffusion equations with discontinuous source terms. When a parameter multiplying the second order derivatives in the equations is small, their solutions exhibit boundary layers as well as interior layers. A numerical method based on finite element and Shishkin and Bakhvalov–Shishkin meshes is presented. We derive an error estimate of order O(N-1ln N) in the energy norm with respect to the perturbation parameter. Numerical experiments are also presented to support our theoritical results.

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