Acta mathematica scientia,Series A ›› 2019, Vol. 39 ›› Issue (6): 1456-1475.

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Blow-Up Phenomenon for a Coupled Diffusion System with Exponential Reaction Terms and Space-Dependent Coefficients

Danni Ma(),Zhongbo Fang*()   

  1. School of Mathematical Sciences, Ocean University of China, Shandong Qingdao 266100
  • Received:2018-09-27 Online:2019-12-26 Published:2019-12-28
  • Contact: Zhongbo Fang E-mail:madanni777@sina.com;fangzb7777@hotmail.com
  • Supported by:
    NSFC(1167118);the Fundamental Research Funds for the Central Universities(201964008)

Abstract:

Blow-up phenomena for the Dirichlet initial boundary value problem of a coupled diffusion system with exponential reaction terms and space-dependent coefficients is considered. By virtue of the Bernoulli equation, the method of super-and-sub solutions and the modified differential inequality techniques, we founded the influence of space-dependent coefficients on the existence of global solution or blow-up solution at finite time. Moreover, upper and lower bounds for the blow-up time of the solution are derived under different measures in whole dimensional spaces (N ≥ 1).

Key words: Coupled diffusion system, Exponential reaction terms, Space-dependent coefficients, Bounds for the blow-up time

CLC Number: 

  • O175.2
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