Autor: Bielski, Ryszard - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Long gravity waves in a canal with a corrugated bottom in the asymptotic description
Autorzy:: Bielski, Włodzimierz
Wojnar, Ryszard
Powiązania:: https://bibliotekanauki.pl/articles/1839674.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: bottom profiles
homogenization approach
effective depth
Opis:: We consider the classic Lagrange long gravitational wave of a homogeneous incompressible fluid in a shallow canal with a corrugated bottom. We use the asymptotic expansion method to find the effective depth of a one-dimensional canal and, hence, the effective wave velocity. A flow in a two-dimensional tank with a corrugated bottom is also studied by this method.
Źródło:: Journal of Theoretical and Applied Mechanics; 2021, 59, 3; 443-454
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Laminar flow past the bottom with obstacles - a porous medium approximation
Autorzy:: Bielski, Włodzimierz
Wojnar, Ryszard
Powiązania:: https://bibliotekanauki.pl/articles/2104770.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: plants
permeability
gravity-driven flow
Darcy-Brinkman’s law
Stokes equation
Opis:: We provide a model of a stationary laminar flow in a channel at the bottom of which plants grow in a dense layer. Since this layer of plants is dense, we treat it as a porous medium and we propose to describe the flow in such a medium by Brinkman’s equation. The flow in the fluid layer located above (infiltrated by water) the layers of plants is described by the Stokes equation. We show that such a model gives results consistent with experimental observations. We indicate also that this new model complements the previously given model in which the benthonic plants were considered as a suspension, so the previous model referred to the channel at the bottom of which the plants grew rare. For high permeability of the porous medium, we arrive at the results obtained for the medium filled with a liquid with a suspension.
Źródło:: Journal of Theoretical and Applied Mechanics; 2022, 60, 3; 509--520
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

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