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- W4287077844 abstract "In this paper, we consider a damped Navier-Stokes-Bardina model posed on the whole three-dimensional. These equations have an important physical motivation and they arise from some oceanic model. From the mathematical point of view, they write down as the well-know Navier-Stokes equations with an additional nonlocal operator in their nonlinear transport term, and moreover, with an additional damping term depending of a parameter $beta>0$. We study first the existence and uniqueness of global in time weak solutions in the energy space. Thereafter, our main objective is to describe the long time behavior of these solutions. For this, we use some tools in the theory of dynamical systems to prove the existence of a global attractor, which is a compact subset in the energy space attracting all the weak solutions when the time goes to infinity. Moreover, we derive an upper bound for the fractal dimension of the global attractor associated to these equations. Finally, we find a range of values for the damping parameter $beta>0$, where we are able to give an acutely description of the internal structure of the global attractor. More precisely, we prove that the global attractor only contains the stationary (time-independing) solution of the damped Navier-Stokes-Bardina equations." @default.
- W4287077844 created "2022-07-25" @default.
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- W4287077844 date "2021-07-14" @default.
- W4287077844 modified "2023-09-27" @default.
- W4287077844 title "On the long-time behavior for a damped Navier-Stokes-Bardina model" @default.
- W4287077844 doi "https://doi.org/10.48550/arxiv.2107.07070" @default.
- W4287077844 hasPublicationYear "2021" @default.
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