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Prediction of radiative heat transfer in metallic foams

TitlePrediction of radiative heat transfer in metallic foams
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2014
AuthorsContento, Gaetano, Oliviero M., Bianco N., and Naso V.
JournalInternational Journal of Thermal Sciences
Volume76
Pagination147-154
ISSN12900729
KeywordsAnalytical approach, Analytical-numerical method, Heat flux, Heat transfer, Metallic foam, Models, Monte Carlo methods, Original model, Porosity, Radiative conductivity, Radiative heat fluxes, Radiative heat transfer, radiative transfer, Representative elementary volume
Abstract

A simplified analytical-numerical method to model radiation heat transfer in metallic foams is proposed. It modifies a model taken from the literature and allows to predict the radiative conductivity for high and low porosity foams. A simplified cubic representative elementary volume of the foam is assumed and radiative heat flux is evaluated by computing radiosities and view factors. The analytical approach proposed in this paper slightly modifies some coefficients of the original model. Test ray-tracing and numerical simulations based onto Monte Carlo method are carried out in order to consistently calculate some view factors. The comparison with experimental results shows that predictions of the proposed model are more accurate than those of the original one. © 2013 Elsevier Masson SAS. All rights reserved.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84885654001&doi=10.1016%2fj.ijthermalsci.2013.09.001&partnerID=40&md5=ec1ddf0d5f2054d6d1f908d7feb0f3b1
DOI10.1016/j.ijthermalsci.2013.09.001
Citation KeyContento2014147