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Special Topics & Reviews in Porous Media: An International Journal

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ISSN Печать: 2151-4798

ISSN Онлайн: 2151-562X

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NUMERICAL STUDY OF DOUBLE DIFFUSIVE MIXED CONVECTION IN HORIZONTAL CHANNEL WITH COMPOSITE OPEN POROUS CAVITY

Том 10, Выпуск 4, 2019, pp. 401-419
DOI: 10.1615/SpecialTopicsRevPorousMedia.2019029342
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Краткое описание

Numerical simulation of heat and mass exchange in a composite open cavity connected to a horizontal channel is investigated. A porous layer forms the lower part of the open cavity. One of the vertical sides of the cavity is kept at constant temperature and adjusted with constant concentration. The other walls of the cavity and channel are thermally insulated. The governing equations are solved by finite element method. The fixed parameters throughout the study are Prandtl number, Pr = 6.26; Darcy number, Da = 10−3; buoyancy ratio, N = 0.5; and Lewis number, Le = 20. The governing parameters are Reynolds number (Re = 50–250), Richardson number (Ri = 0.01–100), and thickness of porous layer (Hp = 0.25–1). These three parameters are studied for two cases of heat and species sources, opposing and assisting cases. The results showed that the opposing case gives maximum convective heat transfer, where for Ri = 0.01, the percentages increase of Nusselt number between the opposing and assisting cases are 53.07 and 90.18% at Re = 50 and 250, respectively; whereas, for Ri = 100, the percentages increase are 36.30 and 17.81%.

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ЦИТИРОВАНО В
  1. Nag Preetom, Molla Md. Mamun, Double-diffusive natural convection of non-Newtonian nanofluid considering thermal dispersion of nanoparticles in a vertical wavy enclosure, AIP Advances, 11, 9, 2021. Crossref

  2. Kumar Prince, Pandey K. M., Effect of porous slab thickness and Darcy number on thermohydraulic transport characteristics of Ag–TiO 2 /water hybrid nanofluid flow‐through partially porous wavy channels , Heat Transfer, 2022. Crossref

  3. Kumar Sudhanshu, Gangawane Krunal M., Effect of the aspect ratio of the shallow enclosure and built‐in rectangular blockage on MHD double‐diffusive free convection subjugated to non‐uniform boundary conditions, Heat Transfer, 51, 8, 2022. Crossref

  4. Diganjit Rawal, Gnanasekaran N., Mobedi Moghtada, Numerical Study for Enhancement of Heat Transfer Using Discrete Metal Foam with Varying Thickness and Porosity in Solar Air Heater by LTNE Method, Energies, 15, 23, 2022. Crossref

  5. Badday Alaa Jabbar , Harfash Akil J., THERMOSOLUTAL CONVECTION IN ROTATING BIDISPERSIVE POROUS MEDIA WITH GENERAL BOUNDARY CONDITIONS , Special Topics & Reviews in Porous Media: An International Journal, 13, 6, 2022. Crossref

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