Acta mathematica scientia,Series B ›› 2021, Vol. 41 ›› Issue (4): 1169-1195.doi: 10.1007/s10473-021-0410-z

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LARGE-TIME BEHAVIOR OF SOLUTIONS TO THE INFLOW PROBLEM OF THE NON-ISENTROPIC MICROPOLAR FLUID MODEL

Junpei GAO, Haibo CUI   

  1. School of Mathematical Sciences, Huaqiao University, Quanzhou 362021, China
  • Received:2020-03-07 Revised:2020-10-26 Online:2021-08-25 Published:2021-09-01
  • Contact: Haibo CUI E-mail:hbcui@hqu.edu.cn
  • Supported by:
    The research was supported by the National Natural Science Foundation of China (11601164, 11971183), the Fundamental Research Funds for the Central Universities (ZQN-701) and the Natural Science Foundation of Fujian Province of China (2020J01071).

Abstract: We investigate the asymptotic behavior of solutions to the initial boundary value problem for the micropolar fluid model in a half line $\mathbb{R}_{+}:=(0,\infty).$ Inspired by the relationship between a micropolar fluid model and Navier-Stokes equations, we prove that the composite wave consisting of the transonic boundary layer solution, the 1-rarefaction wave, the viscous 2-contact wave and the 3-rarefaction wave for the inflow problem on the micropolar fluid model is time-asymptotically stable under some smallness conditions. Meanwhile, we obtain the global existence of solutions based on the basic energy method.

Key words: Micropolar fluid model, composite wave, inflow problem, stability

CLC Number: 

  • 35Q35
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