Keywords
Thermal management and control; Apparent radiative surface properties; Cavity effect
Abstract
Radiative surface properties play a critical role in the analysis, design, and optimization of thermal systems. Geometry has a strong influence on the emission and absorption characteristics of a surface. Modification of radiative surface properties may be achieved by using engineered surfaces or cavities by capitalizing on the cavity effect. A model for the apparent emissivity of an arbitrarily shaped cavity with spectrally and directionally dependent radiative surface properties is presented in this work. This model is verified through comparison with published models of the apparent radiative properties of cylindrical cavities. The merit of this model is demonstrated by obtaining closed-form expressions for the apparent emissivity of ideal, two-surface cavities for six representative geometries (cylindrical, conical, spherical, cylindro-conical, cylindro-inner cone, and double-cone). A comprehensive review of prior research related to the apparent emissivity of these shapes is presented. Results obtained using the simple, closed-form expressions agree well with results obtained using more complex methods when the intrinsic surface emissivity is large. Finally, this work elaborates on applications of radial and angular cavity shapes and describes the potential benefits of using geometric manipulation for dynamic control of radiative surface properties in energy and thermal management systems.
Original Publication Citation
Advances in Heat Transfer, Volume 57 ISSN 0065-2717, https://doi.org/10.1016/bs.aiht.2023.12.002 Copyright © 2024 Elsevier Inc.
BYU ScholarsArchive Citation
Mofidipour, Ehsan; Jones, Matthew R.; and Iverson, Brian D., "Review of the Cavity Effect: Modeling and Impact of Cavity Shape on Apparent Radiative Surface Properties" (2024). Faculty Publications. 7339.
https://scholarsarchive.byu.edu/facpub/7339
Document Type
Book Chapter
Publication Date
2024
Publisher
Academic Press Elsevier
Language
English
College
Ira A. Fulton College of Engineering
Department
Mechanical Engineering
Copyright Status
Copyright © 2024 Elsevier Inc. All rights are reserved, including those for text and data mining, AI training, and similar technologies. This is the author's submitted version of this article. The definitive version can be found at https://www.sciencedirect.com/bookseries/advances-in-heat-transfer/vol/57/suppl/C
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