Publication de 12 numéros par an
ISSN Imprimer: 1091-028X
ISSN En ligne: 1934-0508
Indexed in
STUDY OF THE MIXED CONVECTION IN A CHANNEL WITH POROUS LAYERS USING A THERMAL NONEQUILIBRIUM MODEL
RÉSUMÉ
With the aim of cooling the PV cells and recovering maximum heat dissipated by joule effect on the solar sensor, and thus to contribute to the improvement of the effectiveness of such a system, we are interested in the present study in the nonequilibrium thermal transfer of heat occurring between the coolant fluid and the exchanger (channel) partially filled by successive porous matrices. The coolant fluid saturating the porous medium is injected at different values of velocity and temperature. The model of the local thermal nonequilibrium (LTNE) is used to analyze the effects of some characteristic parameters such as the ratio of fluid and solid heat transfer coefficient Rs and the thermal conductivity ratio Rλ on the stability and flow mode and on the output of such exchange. Compromise values of these coefficients Rs and Rλ are necessary for obtaining a high-temperature outlet of the channel.
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Buonomo Bernardo, Ferraro Giuseppe, Manca Oronzio, Marinelli Lorenzo, Nardini Sergio, Mixed convection in horizontal channels partially filled with aluminium foam heated from below and with external heat losses on upper plate, Journal of Physics: Conference Series, 501, 2014. Crossref
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Ganapathy R., Mohan A., Double diffusive Darcy flow induced by a spherical source, Ain Shams Engineering Journal, 6, 2, 2015. Crossref
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Nield Donald A., Bejan Adrian, Mixed Convection, in Convection in Porous Media, 2017. Crossref
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Rastiello Giuseppe, Bennacer R., Nahas Georges, Bogdan Mateuz, Effective Permeability and Transfer Properties in Fractured Porous Media, Defect and Diffusion Forum, 362, 2015. Crossref
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Nield Donald A., Bejan Adrian, Mixed Convection, in Convection in Porous Media, 2013. Crossref
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Buonomo Bernardo, Fardella Vincenzo, Manca Oronzio, Nardini Sergio, Vigna Silvio, Investigation on Thermal and Fluid Dynamic Behaviors in Mixed Convection in Horizontal Channels with Aluminum Foam and Heated from Below, E3S Web of Conferences, 197, 2020. Crossref
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Yerramalle Vijayalakshmi, Premachandran B., Talukdar Prabal, Mixed convection from a heat source in a channel with a porous insert: A numerical analysis based on local thermal non-equilibrium model, Thermal Science and Engineering Progress, 25, 2021. Crossref