TITLE:
Global Well-Posedness and Large-Time Behavior to the 3D Two-Fluid Model with Degenerate Viscosities
AUTHORS:
Hongxia Ji, Wenjing Song
KEYWORDS:
Two-Fluid Model, Degenerate Viscosities, Large-Time Behavior, Global Well-Posedness
JOURNAL NAME:
Journal of Applied Mathematics and Physics,
Vol.13 No.1,
January
22,
2025
ABSTRACT: In the paper, we study a compressible two-fluid model in
ℝ
3
, where
γ
±
>1
. The pressure of the two fluids is equal. Different from previous research, we consider that viscosity coefficient both
μ
and
λ
are functions of density. The global well-posedness of the three-dimensional compressible two-phase flow model is an open problem due to its dissipative, nonlinear structure. In the paper, setting
m
±
=
M
±
and
Z=P−
P
¯
, by exploiting the dissipation structure, we obtain energy estimates for
(
Z,w,n
)
and its derivatives, then we obtain the time decay rates for
(
Z,w,n
)
. So we derive global well-posedness and large time behavior to the three dimensional compressible two-fluid model.