  In this work, we study the global existence of strong solutions and
large-time behavior of a two-phase fluid model in a bounded domain. The model
consists of the isothermal Euler equations and the isentropic compressible
Navier--Stokes equations, coupled via the drag force. It was derived in [13[
from a kinetic-fluid model describing the dynamics of particles subject to
local alignment force and Brownian noises immersed in a compressible viscous
fluid. For this system, we extend the local existence theory for strong
solutions developed in [13] to obtain the global existence of strong solutions
to the system. Moreover, we use the Lyapunov functional associated with the
system to get large-time behavior estimates for global classical solutions.
