Existence and Large-time Behavior of Strong Solutions to the Compressible Navier-Stokes System with Density-dependent Viscosities in 3D Bounded Domains
摘要
This paper is devoted to studying the motion of compressible barotropic Navier-Stokes flows subject to large external potential forces in a three-dimensional bounded domain, where both shear and bulk viscosities are powers of density. By defining suitable energy functionals and effective viscous flux, it is proved that the problem has a unique global strong solution under the slip boundary conditions, provided that the lower bound of initial density is sufficiently large. Additionally, the large-time behavior of the solution is established, which shows that the solution converges to its steady state in Lp-spaces as a consequence of the time-independent estimates.