In this paper, the large-time behavior of the solution to the Cauchy problem for the one-dimensional compressible Navier-Stokes/Allen-Cahn system, which describes the flow of non-miscible two-phase flows with diffusion interfaces, has been studied. Using the anti-derivative and energy method, we demonstrate the existence and asymptotic stability of the viscous shock solution for one-dimensional compressible Navier-Stokes/Allen-Cahn equation.
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