Infinite Energy Solutions for Damped Navier–Stokes Equations in $${\mathbb{R}^2}$$

Springer Science and Business Media LLC - Tập 15 - Trang 717-745 - 2013
Sergey Zelik1
1Department of Mathematics, University of Surrey, Guildford, UK

Tóm tắt

We study the so-called damped Navier–Stokes equations in the whole 2D space. The global well-posedness, dissipativity and further regularity of weak solutions of this problem in the uniformly-local spaces are verified based on the further development of the weighted energy theory for the Navier–Stokes type problems. Note that any divergent free vector field $${u_0 \in L^\infty(\mathbb{R}^2)}$$ is allowed and no assumptions on the spatial decay of solutions as $${|x| \to \infty}$$ are posed. In addition, applying the developed theory to the case of the classical Navier–Stokes problem in $${\mathbb{R}^2}$$ , we show that the properly defined weak solution can grow at most polynomially (as a quintic polynomial) as time goes to infinity.

Tài liệu tham khảo

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