Asymptotic behavior of the Boussinesq equation with nonlocal weak
damping and arbitrary growth nonlinear function
Abstract
In this paper, we consider the asymptotic behavior of the Boussinesq
equation with nonlocal weak damping when the nonlinear function is
arbitrary polynomial growth. We firstly prove the well-posedness of
solution by means of the monotone operator theory. At the same time, we
obtain the dissipative property of the dynamical system (E ,S(
t)) associated with the problem in the space H 0 2 ( Ω ) × L 2 (
Ω ) and D ( A 3 4 ) × H 0 1 ( Ω ) , respectively. After that, the
asymptotic smoothness of the dynamical system (E ,S( t))
and the further quasi-stability are demonstrated by the energy
reconstruction method. Finally, different from [21] we show not only
existence of the finite global attractor but also existence of the
generalized exponential attractor.