Acta mathematica scientia,Series B ›› 2019, Vol. 39 ›› Issue (1): 180-194.doi: 10.1007/s10473-019-0115-8

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GLOBAL EXISTENCE AND POINTWISE ESTIMATES OF SOLUTIONS TO GENERALIZED KURAMOTO-SIVASHINSKY SYSTEM IN MULTI-DIMENSIONS

Yingshu ZHANG, Lang LI, Shaomei FANG   

  1. Department of Mathematics, South China Agricultural University, Guangzhou 510642, China
  • Received:2017-09-25 Online:2019-02-25 Published:2019-03-13
  • Contact: Shaomei FANG E-mail:dz90@scau.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (11271141), and Chongqing Science & Technology Commission (cstc2018jcyjAX0787).

Abstract: The Cauchy problem of the generalized Kuramoto-Sivashinsky equation in multi-dimensions (n ≥ 3) is considered. Based on Green's function method, some ingenious energy estimates are given. Then the global existence and pointwise convergence rates of the classical solutions are established. Furthermore, the Lp convergence rate of the solution is obtained.

Key words: Kuramoto-Sivashinsky equation, global existence, pointwise estimates, Green's function method, energy method

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