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Journal of Porous Media
Fator do impacto: 1.49 FI de cinco anos: 1.159 SJR: 0.504 SNIP: 0.671 CiteScore™: 1.58

ISSN Imprimir: 1091-028X
ISSN On-line: 1934-0508

Volumes:
Volume 22, 2019 Volume 21, 2018 Volume 20, 2017 Volume 19, 2016 Volume 18, 2015 Volume 17, 2014 Volume 16, 2013 Volume 15, 2012 Volume 14, 2011 Volume 13, 2010 Volume 12, 2009 Volume 11, 2008 Volume 10, 2007 Volume 9, 2006 Volume 8, 2005 Volume 7, 2004 Volume 6, 2003 Volume 5, 2002 Volume 4, 2001 Volume 3, 2000 Volume 2, 1999 Volume 1, 1998

Journal of Porous Media

DOI: 10.1615/JPorMedia.v12.i10.20
pages 939-954

Highly Porous Metal Foams: Effective Thermal Conductivity Measurement Using a Photothermal Technique

Mourad Fetoui
Ecole Nationale d'Ingénieurs de Monastir, Laboratoire d'Etudes des Systèmes Thermiques et Energétiques, Avenue Ibn Eljazzar, 5019 Monastir, Tunisie
Fethi Albouchi
Laboratoire d'Etudes des Systèmes Thermiques et Energétiques, Ecole Nationaled 'Ingénieurs de Monastir, Tunisia
Fabrice Rigollet
Aix Marseille Univ, CNRS, IUSTI
Sassi Ben Nasrallah
Laboratoire d'Études des Systèmes Thermiques et Énergétiques, Ecole Nationale d'Ingénieurs de Monastir, Monastir 5019 Tunisie

RESUMO

The effective thermal conductivity of highly porous metal foams is measured using a photothermal method with a crenel heating excitation. This method is based on a nondestructive technique. The foam is sandwiched between two thin aluminum plates. The front face of the three-layered structure is submitted to a heat flux and the temperature rise on the rear face is recorded using an infrared camera. Measurements are reported on several foams. The parameter identification is performed by the minimization of the ordinary least squares objective function comparing the measured temperatures to the response of a thermal model function of thermophysical parameters, built with thermal quadruple formalism. The used iterative algorithm is based on the Gauss-Newton method. The obtained results are compared to the literature values and a good agreement is noted.


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