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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Journal of Porous Media
Импакт фактор: 1.752 5-летний Импакт фактор: 1.487 SJR: 0.43 SNIP: 0.762 CiteScore™: 2.3

ISSN Печать: 1091-028X
ISSN Онлайн: 1934-0508

Выпуски:
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Journal of Porous Media

DOI: 10.1615/JPorMedia.v9.i3.30
pages 207-222

Free Convection in a Wavy Cavity Filled with Heat-Generating Porous Media

Aydin Misirlioglu
Istanbul Technical University, Faculty of Aeronautics and Astronautics, 34469 Maslak-Istanbul, Turkey
A.Cihat Baytaş
istanbul technical university
Ioan Pop
Department of Applied Mathematics, Babes-Bolyai University, 400084 Cluj-Napoca, Romania

Краткое описание

A numerical investigation of steady free convection inside a cavity made of two horizontal straight walls and two vertical wavy walls filled with a heat-generating porous medium is carried out. Wavy walls are assumed to follow the profile of a cosine curve. Horizontal straight walls are kept adiabatic, while the bent walls are isothermal and kept at the same temperature. The governing Darcy and energy equations were discretized using the Galerkin finite element method. The results provide detailed information on the influences of the governing parameters, which describe this problem. Simulations are carried out for a range of wave ratio λ = 0 to 0.6, aspect ratio A = 1 to 5, and Rayleigh number Ra = 10 to 1000. Results are presented in the form of streamlines, isotherms, and local and average Nusselt numbers. Comparison with known results from the open literature for natural convection in a porous cavity with plane vertical walls (λ = 0) is in excellent agreement. In all the results presented, steady state has been attained.


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