Acta mathematica scientia,Series A ›› 2025, Vol. 45 ›› Issue (1): 74-91.

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The Asymptotic Behavior of the Generalized Brinkman-Forchheimer Equation

Li Xin, Hao Wenjuan, Liu Yang   

  1. School of Science, Yanshan University, Hebei Qinhuangdao 066004
  • Received:2023-09-04 Revised:2023-12-25 Online:2025-02-26 Published:2025-01-08
  • Supported by:
    NSFC (11801493, 12071192), the Hebei Natural Science Foundation of China (A2018203309, A2022203004) and the Hebei Provincial Department of Education Higher Science and Technology Plan Youth Fund (QN2020203)

Abstract: This article investigated the well-posedness and long-term behavior problems of solutions to 3D compressible generalized Brinkman-Forchheimer equation defined on a bounded domain. The equation simulates the transport process of fluid through porous medium dominated by Lévy dissipation. Firstly, the classical compactness method and a prior estimation were used to prove the well posedness of the solution of the equation in the energy space. Secondly, introduce the concept of system decomposition: on the one hand, the localization method was used to prove the boundedness of the contraction part of the equation in the initial energy space; on the other hand, the exponential dissipation of the smooth part of the equation in the high-order energy space is obtained by the instantaneous optical smoothing method, and the existence of the global attractor and the exponential attractor of the equation in the initial phase space is finally verified.

Key words: slightly compressible Brinkman-Forchheimer equation, well-posedness, regularity and partial smoothing, global attractor, exponential attractor

CLC Number: 

  • O175.2
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