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JOURNALS // Zapiski Nauchnykh Seminarov POMI // Archive

Zap. Nauchn. Sem. POMI, 2022 Volume 519, Pages 10–34 (Mi znsl7300)

On attractors of 2D Navier–Stockes system in a medium with anisotropic variable viscosity and periodic obstacles

K. A. Bekmaganbetovab, A. M. Toleubaicb, G. A. Chechkinbde

a Kazakhstan Branch of Lomonosov Moscow State University, Nur-Sultan
b Institute of Mathematics and Mathematical Modeling, Ministry of Education and Science, Republic of Kazakhstan, Almaty
c Eurasian National University named after L.N. Gumilyov, Nur-Sultan
d Lomonosov Moscow State University
e Institution of Russian Academy of Sciences Institute of Mathematics with Computer Center, Ufa

Abstract: A two-dimensional Navier–Stokes system of equations in a porous medium with an anisotropic variable viscosity with rapidly oscillating terms in the equations and in the boundary conditions, is considered. It is proved that the trajectory attractors of this system tend in a certain weak topology to the trajectory attractors of the homogenized Navier–Stokes system of equations with an additional potential.

Key words and phrases: attractors, homogenization, Navier–Stokes system of equations, nonlinear equations, weak convergence, perforated domain, rapidly oscillating terms, anisotropic medium.

UDC: 517

Received: 10.12.2022



© Steklov Math. Inst. of RAS, 2024