Nonlinearity exponential stability for Lions-Feireisl's weak solutions to the three-dimensional Barotropic Compressible Navier-Stokes Equations with large Potential Force (2506.23807v2)

Abstract: We consider the large-time behavior for the barotropic compressible Navier-Stokes equations with large external force in 3D bounded domain. By constructing a suitable Lyapunov functional and using the extra integrability of the density, we state the exponentially decay-in-time to the equilibrium state for Lions-Feireisl's finite-energy weak solutions. In addition, some careful discussion on Taylor expansion also plays a crucial role in our analysis. The main difficulty lies in the fact that the equilibrium state of density is not a constant anymore induced by the large external force. It should be noted that our result can be regarded as an extension of \cite{PSW} to large potential forces case.