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Measurements of local nusselt number with a miniscale laminar confined slot-Jet impinging on a flat plate / Dae Hee Lee in Industrial & engineering chemistry research, Vol. 50 N° 10 (Mai 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 10 (Mai 2011) . - pp. 6508-6512 Titre : Measurements of local nusselt number with a miniscale laminar confined slot-Jet impinging on a flat plate Type de document : texte imprimé Auteurs : Dae Hee Lee, Auteur Année de publication : 2011 Article en page(s) : pp. 6508-6512 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Flat  plate  Nusselt  number Résumé : Heat transfer characteristics in a miniscale laminar confined slot-jet on a heated plate at uniform heat flux are experimentally investigated. The effects of the jet Reynolds number (Re = 120-180) on the heat transfer and flow are considered. An electrically heated gold film Intrex (a very thin gold-coated polyester substrate sheet) is used to create a uniform heat flux on the flat surface. The temperature on the surface is measured by thermochromic liquid crystals and a digital color image processing system. Recorded color images of liquid crystals are then used to determine the local Nusselt numbers along the surface. The results show a peculiar behavior in that the Nusselt number increases between Re = 120 and Re = 140, suddenly drops at around Re = 150-160, and increases again beyond Re = 160. This sudden drop of Nusselt number at around Re = 150-160 may be caused by a sinusoidal fluctuation of the jet flow. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24158949 [article] Measurements of local nusselt number with a miniscale laminar confined slot-Jet impinging on a flat plate [texte imprimé] / Dae Hee Lee, Auteur . - 2011 . - pp. 6508-6512. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 10 (Mai 2011) . - pp. 6508-6512 Mots-clés : Flat  plate  Nusselt  number Résumé : Heat transfer characteristics in a miniscale laminar confined slot-jet on a heated plate at uniform heat flux are experimentally investigated. The effects of the jet Reynolds number (Re = 120-180) on the heat transfer and flow are considered. An electrically heated gold film Intrex (a very thin gold-coated polyester substrate sheet) is used to create a uniform heat flux on the flat surface. The temperature on the surface is measured by thermochromic liquid crystals and a digital color image processing system. Recorded color images of liquid crystals are then used to determine the local Nusselt numbers along the surface. The results show a peculiar behavior in that the Nusselt number increases between Re = 120 and Re = 140, suddenly drops at around Re = 150-160, and increases again beyond Re = 160. This sudden drop of Nusselt number at around Re = 150-160 may be caused by a sinusoidal fluctuation of the jet flow. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24158949