Abstract
We study the long-time dynamics of the Navier–Stokes equations in the three-dimensional periodic domains with a body force decaying in time. We introduce appropriate systems of decaying functions and corresponding asymptotic expansions in those systems. We prove that if the force has a large-time asymptotic expansion in Gevrey–Sobolev spaces in such a general system, then any Leray–Hopf weak solution admits an asymptotic expansion of the same type. This expansion is uniquely determined by the force, and independent of the solutions. Various applications of the abstract results are provided which particularly include the previously obtained expansions for the solutions in case of power decay, as well as the new expansions in case of the logarithmic and iterated logarithmic decay.
Original language | English |
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Pages (from-to) | 1023-1072 |
Number of pages | 50 |
Journal | Annali di Matematica Pura ed Applicata |
Volume | 199 |
Issue number | 3 |
DOIs | |
State | Published - Jun 1 2020 |
Keywords
- Abstract expansions
- Asymptotic expansions
- Expansion theory
- Long-time dynamics
- Navier–Stokes equations