Acta mathematica scientia,Series A ›› 2023, Vol. 43 ›› Issue (5): 2133-2158.doi: 10.1007/s10473-023-0513-9

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THE ASYMPTOTIC STABILITY OF PHASE SEPARATION STATES FOR COMPRESSIBLE IMMISCIBLE TWO-PHASE FLOW IN 3D*

Yazhou CHEN1, Hakho HONG2, Xiaoding SHI1,†   

  1. 1. College of Mathematics and Physics, Beijing University of Chemical Technology, Beijing 100029, China;
    2. Address Institute of Mathematics, State Academy of Sciences, Pyongyang, D P R Korea
  • Received:2022-01-06 Revised:2023-05-04 Online:2023-10-26 Published:2023-10-25
  • Contact: †Xiaoding SHI, E-mail: hhhong@star-co.net.kp
  • About author:Yazhou CHEN, E-mail:chenyz@mail.buct.edu.cn; Hakho HONG, E-mail: shixd@mail.buct.edu.cn
  • Supported by:
    National Natural Science Foundation of China (12171024, 11901025, 11971217, 11971020) and the Academic and Technical Leaders Training Plan of Jiangxi Province (20212BCJ23027).

Abstract: This paper is concerned with a diffuse interface model called Navier-Stokes/Cahn-Hilliard system. This model is usually used to describe the motion of immiscible two-phase flows with a diffusion interface. For the periodic boundary value problem of this system in torus $\mathbb{T}^3$, we prove that there exists a global unique strong solution near the phase separation state, which means that no vacuum, shock wave, mass concentration, interface collision or rupture will be developed in finite time. Furthermore, we establish the large time behavior of the global strong solution of this system. In particular, we find that the phase field decays algebraically to the phase separation state.

Key words: Navier-Stokes/Cahn-Hilliard system, strong solution, existence, uniqueness, large-time behavior

CLC Number: 

  • 35B40
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