Impact of porous fins on thermal convection in a differentially-heated cubical chamber

Impact of porous fins on thermal convection in a differentially-heated cubical chamber

Detalles Bibliográficos
Parent link:Journal of Thermal Analysis and Calorimetry.— .— New York: Springer Science+Business Media LLC.
Vol. 150, iss. 8.— 2025.— P. 6395-6412
Autor principal: Le Suan Khoang Kkhoa
Otros Autores: Oztop H. F. Hakan, Sheremet M. A. Mikhail Aleksandrovich
Sumario:Title screen
Thermal transport enhancement can be achieved using various techniques. Nowadays, one of the very interesting and useful passive approaches is to use the porous fins for the classical heat transfer fluids. The objective of this research is to numerically investigate the impact of porous fins on convective heat transfer performance inside a differentially-heated cubical cavity. An effect of different characteristics including Rayleigh number (104 ≤ Ra ≤ 106), dimensionless fin length (0.2 ≤ l ≤ 0.8), dimensionless fin position (0.2 ≤ d ≤ 0.6), fin number (1 ≤ N ≤ 3), and porosity (0.8 ≤ ε ≤ 0.99) on liquid circulation and heat transfer performance has been studied. Mathematical model formulated using the Oberbeck–Boussinesq equations combined with the Brinkman-extended Darcy approach for the porous fins have been closed employing the additional restrictions. Governing equations have been worked out using the finite-difference technique and hybrid non-primitive variables including velocity and vorticity vectors. The results indicate that using porous fins enhances thermal energy transport by up to 50% compared to finless cavities. Moreover, a single porous fin placed close to the bottom surface (d = 0.2) with a relative length of l = 0.6 is considered the best configuration for most cases for cubical cavities. It has been also found that porosity ranging from 0.8 to 0.99 has minor impact on heat transfer performance
Текстовый файл
AM_Agreement
Publicado: 2025
Materias:
Natural convection
Heat transfer
Fins
Porous media
Mathematical modeling
электронный ресурс
труды учёных ТПУ
Acceso en línea:https://doi.org/10.1007/s10973-025-14192-x
Formato: Electrónico Capítulo de libro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=683771

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