A NUMERICAL STUDY OF AXIAL CONDUCTION IN A FLUID-SATURATED POROUS-FILLED DUCT UNDER A LOCAL THERMAL NON-EQUILIBRIUM MODEL
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Published:2023
Issue:3
Volume:14
Page:73-89
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ISSN:2151-4798
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Container-title:Special Topics & Reviews in Porous Media: An International Journal
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language:en
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Short-container-title:Special Topics Rev Porous Media
Author:
Bhargavi D.,Gupta Nitish,Makinde O. D.
Abstract
This study analyses the influence of axial conduction and Biot number on the forced convective heat transfer characteristics in a duct filled with porous material that is thermally developing under local thermal non-equilibrium (LTNE). Channel walls are subjected to heat flux. The unidirectional flow in the porous region corresponds to the Darcy Brinkman model. A successive accelerated replacement (SAR) approach has been used to obtain numerical solutions. The investigations further quantify the impact of the Biot number on heat transfer enhancement. For fluid-solid phases, dimensionless temperatures, and local Nusselt number (<i>Nu<sub>ξ</sub></i>), profiles are given in the present investigation. Validation of fully developed conditions for LTNE is done. The axial conduction effect is more at the low Peclet number <i>Pe<sub>H</sub></i> for all the Biot numbers Bi. For large <i>Pe<sub>H</sub></i>, the axial conduction effect is negligible. The <i>Nu<sub>ξ</sub></i> decreases as the ratio of thermal conductivities, <i>κ</i> and <i>Bi</i>, increases. LTNE is equivalent to local thermal equilibrium (LTE) for a large Bi.
Subject
General Engineering,General Materials Science
Reference52 articles.
1. Alalaimi, M., Lorente, S., Wechsatol, W., and Bejan, A., The Robustness of the Permeability of Constructal Tree-Shaped Fissures, Int. J. Heat Mass Transf., vol. 90, pp. 259-265, 2015. 2. Ali, A.O., Khamis, S.A., Seif, F.S., and Makinde, O.D., Entropy Analysis of the Unsteady Darcian Nanofluid Flow in a Cylindrical Pipe with a Porous Wall, Int. J. Ambient Energy, pp. 1-9, 2022. 3. Amiri, A. and Vafai, K., Analysis of Dispersion Effects and Non-Thermal Equilibrium, Non-Darcian, Variable Porosity Incompressible Flow through Porous Media, Int. J. Heat Mass Transf., vol. 37, no. 6, pp. 939-954, 1994. 4. Bhargavi, D. and Reddy, J.S.K., Effect of Heat Transfer in the Thermally Developing Region of the Channel Partially Filled with a Porous Medium: Constant Wall Heat Flux, Int. J. Therm. Sci., vol. 130, pp. 484-495, 2018. 5. Boher, C., Martin, I., Lorente, S., and Frizon, F., Experimental Investigation of Gas Diffusion through Monomodal Materials. Application to Geopolymers and Vycor Glasses, Microporous Mesoporous Mater., vol. 184, pp. 28-36, 2014.
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