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Transient methods of thermal properties measurement on fibrous materials / Zuo Lei in Journal of heat transfer, Vol. 132 N° 3 (Mars 2010) 

Public ISBD [article]  in Journal of heat transfer > Vol. 132 N° 3 (Mars 2010) . - pp. [032601-1/7] Titre : Transient methods of thermal properties measurement on fibrous materials Type de document : texte imprimé Auteurs : Zuo Lei, Auteur ; Sukang Zhu, Auteur ; Ning Pan, Auteur Article en page(s) : pp. [032601-1/7] Note générale : Physique Langues : Anglais (eng) Mots-clés : Convection  Flow  instability  Flow  through  porous  media  Transient  analysis Index. décimale : 536 Chaleur. Thermodynamique Résumé : Fibrous material is a complex porous medium and steady test methods are the main test approaches we currently depend on to study the heat transfer properties. The application of unsteady test methods on fibrous material is still not mature. In this paper, some systematic studies are taken to investigate this problem. By analyzing the main factors impacting the test results, it is found that the local heat convection potentially excited by imposing test temperature can be avoided by limiting the internal temperature gradient and the so-called dual-phase lagging effects are negligible so that the feasibility of the unsteady test method is verified via both theoretical analysis and experimental data. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...] [article] Transient methods of thermal properties measurement on fibrous materials [texte imprimé] / Zuo Lei, Auteur ; Sukang Zhu, Auteur ; Ning Pan, Auteur . - pp. [032601-1/7]. Physique Langues : Anglais (eng) in Journal of heat transfer > Vol. 132 N° 3 (Mars 2010) . - pp. [032601-1/7] Mots-clés : Convection  Flow  instability  Flow  through  porous  media  Transient  analysis Index. décimale : 536 Chaleur. Thermodynamique Résumé : Fibrous material is a complex porous medium and steady test methods are the main test approaches we currently depend on to study the heat transfer properties. The application of unsteady test methods on fibrous material is still not mature. In this paper, some systematic studies are taken to investigate this problem. By analyzing the main factors impacting the test results, it is found that the local heat convection potentially excited by imposing test temperature can be avoided by limiting the internal temperature gradient and the so-called dual-phase lagging effects are negligible so that the feasibility of the unsteady test method is verified via both theoretical analysis and experimental data. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...]