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Entropy generation of natural heat exchange into a porous medium accumulated by a hybrid nanoliquid applying LTNE model

Hosein Shaker (Islamic Azad University of Dezful, Dezful, Iran)
Mohsen Izadi (Department of Mechanical Engineering, Lorestan University, Khorramabad, Iran)
Ehsanolah Assareh (Islamic Azad University of Dezful, Dezful, Iran)
Sabir Ali Shehzad (Comsats University Islamabad, Wah Campus, Wah Cantt, Pakistan)
Mikhail Sheremet (Department of Theoretical Mechanics, Tomsk State University, Tomsk, Russian Federation and Institute of Power Engineering, Tomsk Polytechnic University, Tomsk, Russian Federation)

International Journal of Numerical Methods for Heat & Fluid Flow

ISSN: 0961-5539

Article publication date: 30 July 2021

Issue publication date: 3 January 2022

52

Abstract

Purpose

This study aims to use the thermal non-equilibrium approach to inquire the entropy production and conjugate natural heat exchange in a porous medium. Entropy generation is studied separately for the solid matrix and the hybrid nanoliquid.

Design/methodology/approach

The characteristic equations are unraveled by applying the finite element method. Mathematical relations are used to calculate the generated entropy for the hybrid nanoliquid and matrix structure.

Findings

Based on the results, the produced entropy and the viscous friction term associated with the hybrid nanoliquid phase are not affected by increasing the thermal conductivity ratio of the rigid wall to nanoliquid. Moreover, a higher amount of entropy is generated by the thermal gradients in the hybrid nanoliquid phase compared to the solid matrix.

Originality/value

No investigation in the literature has been reported in this context.

Keywords

Citation

Shaker, H., Izadi, M., Assareh, E., Shehzad, S.A. and Sheremet, M. (2022), "Entropy generation of natural heat exchange into a porous medium accumulated by a hybrid nanoliquid applying LTNE model", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 32 No. 1, pp. 99-119. https://doi.org/10.1108/HFF-08-2020-0520

Publisher

:

Emerald Publishing Limited

Copyright © 2021, Emerald Publishing Limited

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