Attractors of 2D Navier–Stokes system of equations in a locally periodic porous medium
This article deals with two-dimensional Navier-Stokes system of equations with rapidly oscillating terms in the equations and boundary conditions. Studying the problem in a perforated domain, the authors set homogeneous Dirichlet condition on the outer boundary and the Fourier (Robin) condition on...
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| Format: | Article |
| Language: | English |
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Academician Ye.A. Buketov Karaganda University
2022-09-01
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| Series: | Қарағанды университетінің хабаршысы. Математика сериясы |
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| Online Access: | http://mathematics-vestnik.ksu.kz/index.php/mathematics-vestnik/article/view/508 |
| _version_ | 1797372651192188928 |
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| author | K.A. Bekmaganbetov G.A. Chechkin A.M. Toleubay |
| author_facet | K.A. Bekmaganbetov G.A. Chechkin A.M. Toleubay |
| author_sort | K.A. Bekmaganbetov |
| collection | DOAJ |
| description |
This article deals with two-dimensional Navier-Stokes system of equations with rapidly oscillating terms in the equations and boundary conditions. Studying the problem in a perforated domain, the authors set homogeneous Dirichlet condition on the outer boundary and the Fourier (Robin) condition on the boundary of the cavities. Under such assumptions it is proved that the trajectory attractors of this system converge in some weak topology to trajectory attractors of the homogenized Navier-Stokes system of equations with an additional potential and nontrivial right hand side in the domain without pores. For this aim, the approaches from the works of A.V. Babin, V.V. Chepyzhov, J.-L. Lions, R. Temam, M.I. Vishik concerning trajectory attractors of evolution equations and homogenization methods appeared at the end of the XX-th century are used. First, we apply the asymptotic methods for formal construction of asymptotics, then, we verify the leading terms of asymptotic series by means of the methods of functional analysis and integral estimates. Defining the appropriate axillary functional spaces with weak topology, we derive the limit (homogenized) system of equations and prove the existence of trajectory attractors for this system. Lastly, we formulate the main theorem and prove it through axillary lemmas.
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| first_indexed | 2024-03-08T18:38:55Z |
| format | Article |
| id | doaj.art-554786f38cfd42b9a73113c84ccc9cb8 |
| institution | Directory Open Access Journal |
| issn | 2518-7929 2663-5011 |
| language | English |
| last_indexed | 2024-03-08T18:38:55Z |
| publishDate | 2022-09-01 |
| publisher | Academician Ye.A. Buketov Karaganda University |
| record_format | Article |
| series | Қарағанды университетінің хабаршысы. Математика сериясы |
| spelling | doaj.art-554786f38cfd42b9a73113c84ccc9cb82023-12-29T10:19:19ZengAcademician Ye.A. Buketov Karaganda UniversityҚарағанды университетінің хабаршысы. Математика сериясы2518-79292663-50112022-09-01107310.31489/2022m3/35-50Attractors of 2D Navier–Stokes system of equations in a locally periodic porous mediumK.A. BekmaganbetovG.A. ChechkinA.M. Toleubay This article deals with two-dimensional Navier-Stokes system of equations with rapidly oscillating terms in the equations and boundary conditions. Studying the problem in a perforated domain, the authors set homogeneous Dirichlet condition on the outer boundary and the Fourier (Robin) condition on the boundary of the cavities. Under such assumptions it is proved that the trajectory attractors of this system converge in some weak topology to trajectory attractors of the homogenized Navier-Stokes system of equations with an additional potential and nontrivial right hand side in the domain without pores. For this aim, the approaches from the works of A.V. Babin, V.V. Chepyzhov, J.-L. Lions, R. Temam, M.I. Vishik concerning trajectory attractors of evolution equations and homogenization methods appeared at the end of the XX-th century are used. First, we apply the asymptotic methods for formal construction of asymptotics, then, we verify the leading terms of asymptotic series by means of the methods of functional analysis and integral estimates. Defining the appropriate axillary functional spaces with weak topology, we derive the limit (homogenized) system of equations and prove the existence of trajectory attractors for this system. Lastly, we formulate the main theorem and prove it through axillary lemmas. http://mathematics-vestnik.ksu.kz/index.php/mathematics-vestnik/article/view/508attractorshomogenizationsystem of Navier–Stokes equationsweak convergenceperforated domainsrapidly oscillating terms |
| spellingShingle | K.A. Bekmaganbetov G.A. Chechkin A.M. Toleubay Attractors of 2D Navier–Stokes system of equations in a locally periodic porous medium Қарағанды университетінің хабаршысы. Математика сериясы attractors homogenization system of Navier–Stokes equations weak convergence perforated domains rapidly oscillating terms |
| title | Attractors of 2D Navier–Stokes system of equations in a locally periodic porous medium |
| title_full | Attractors of 2D Navier–Stokes system of equations in a locally periodic porous medium |
| title_fullStr | Attractors of 2D Navier–Stokes system of equations in a locally periodic porous medium |
| title_full_unstemmed | Attractors of 2D Navier–Stokes system of equations in a locally periodic porous medium |
| title_short | Attractors of 2D Navier–Stokes system of equations in a locally periodic porous medium |
| title_sort | attractors of 2d navier stokes system of equations in a locally periodic porous medium |
| topic | attractors homogenization system of Navier–Stokes equations weak convergence perforated domains rapidly oscillating terms |
| url | http://mathematics-vestnik.ksu.kz/index.php/mathematics-vestnik/article/view/508 |
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