Abstract
This paper is concerned with the large time behavior of the Cauchy problem for Navier-Stokes/Allen-Cahn system describing the interface motion of immiscible two-phase flow in 3-D. The existence and uniqueness of global solutions and the stability of the phase separation state are proved under the small initial perturbations. Moreover, the optimal time decay rates are obtained for higher-order spatial derivatives of density, velocity and phase. Our results imply that if the immiscible two-phase flow is initially located near the phase separation state, then under small perturbation conditions, the solution exists globally and decays algebraically to the complete separation state of the two-phase flow, that is, there will be no interface fracture, vacuum, shock wave, mass concentration at any time, and the interface thickness tends to zero as the time t → +∞.
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The authors would like to thank the anonymous referees for their careful comments and suggestions leading to improvements in the paper.
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This paper is supported by the National Natural Science Foundation of China (Nos. 12171024, 11901025, 11971217, 11971020); Academic and Technical Leaders Training Plan of Jiangxi Province (No. 20212BCJ23027).
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Chen, Yz., Hong, H. & Shi, Xd. Stability of the Phase Separation State for Compressible Navier-Stokes/Allen-Cahn System. Acta Math. Appl. Sin. Engl. Ser. 40, 45–74 (2024). https://doi.org/10.1007/s10255-023-1070-7
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DOI: https://doi.org/10.1007/s10255-023-1070-7