Acta mathematica scientia,Series A ›› 2020, Vol. 40 ›› Issue (3): 735-755.

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Blow-Up Analysis for a Weakly Coupled Reaction-Diffusion System with Gradient Sources Terms and Time-Dependent Coefficients

Yadong Zheng(),Zhongbo Fang*()   

  1. School of Mathematical Sciences, Ocean University of China, Shandong Qingdao 266100
  • Received:2018-08-29 Online:2020-06-26 Published:2020-07-15
  • Contact: Zhongbo Fang E-mail:yadongzheng2017@sina.com;fangzb7777@hotmail.com
  • Supported by:
    the NSF of Shandong Province(ZR2019MA072);the Fundamental Research Funds for the Central Universities(201964008)

Abstract:

This paper investigate the blow-up phenomena for a weakly coupled reaction-diffusion system with gradient sources terms and time-dependent coefficients subject to null Dirichlet boundary condition. By virtue of the differential inequality technique and comparison principle, we derive some sufficient conditions to guarantee that the solutions exist globally or blow up in finite time under several different measure sense. Moreover, the bounds for the blow-up time of the blow-up solution are obtained in higher dimensional space.

Key words: Reaction-diffusion system, Gradient sources terms, Time dependent-coefficients, Bounds of blow-up time

CLC Number: 

  • O175.2
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