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ISSN Online: 2379-1748

7th Thermal and Fluids Engineering Conference (TFEC)
SJR: 0.152 SNIP: 0.14 CiteScore™:: 0.5

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Clarivate CPCI (Proceedings) Scopus
May, 15-18, 2022 , Las Vegas, NV, USA

ENTROPY GENERATION IN TRANSIENT CONDUCTION-RADIATION HEAT TRANSFER IN A RADIATIVELY PARTICIPATING MEDIUM

Get access (open in a dialog) pages 761-768
DOI: 10.1615/TFEC2022.fnd.040464

Аннотация

In the present study, entropy generation in an unsteady conduction-radiation heat transfer is studied numerically. The finite volume method is used to solve the governing energy equation comprising the radiative flux divergence. The entropy generation for the unsteady conduction-radiation heat transfer is a strong function of temperature and total heat flux (conductive and radiative) distribution, which vary significantly with optical thickness and wall emissivity. Entropy generation decreases with an increase in modified Fourier number (a non-dimensional time) and reaches a minimum at a steady state for the cases considered. Entropy variation is substantial near the walls and least towards the center of the medium.