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Numerical Heat Transfer, Part A: Applications
An International Journal of Computation and Methodology
Volume 79, 2021 - Issue 10-12
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Original Article

Finite element-based evaluation on the role of various shaped containers (oil saturated porous media) for entropy generation versus heating efficiency involving thermal convection with identical heating

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Pages 681-707 | Received 18 Nov 2020, Accepted 28 Jan 2021, Published online: 08 Mar 2021
 

Abstract

Current work involves entropy generation studies within nine porous containers involving identical area for Prm = 155 (engine oil), Dam=105102 at Ram=106. The entropy generation maps for lesser values of Dam depict that Sθ is dominant at the boundaries whereas Sψ is dominant at the central zone. On the other hand, for larger values of Dam, Sψ is found to be dominant throughout the porous containers. Zones corresponding to Sθ,max are found at the bottom corners of all porous containers due to the hot cold junction whereas zones corresponding to Sψ,max vary with the shapes of porous containers. An energy efficient process corresponds to larger Nub¯, larger θ̂ and lesser Stotal. Containers with curved walls are found to be thermally efficient for thermal processing of engine oil saturated porous medium.

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