Parametric numerical study of flow and heat transfer in microchannels with wavy walls / Gong, Liang in Journal of heat transfer, Vol. 133 N° 5 (Mai 2011)  

Public ISBD [article]  inJournal of heat transfer > Vol. 133 N° 5 (Mai 2011) . - pp. [051702/1-10] Titre : Parametric numerical study of flow and heat transfer in microchannels with wavy walls Type de document : texte imprimé Auteurs : Gong, Liang, Auteur ; Krishna Kota, Auteur ; Wenquan Tao, Auteur Année de publication : 2011 Article en page(s) : pp. [051702/1-10] Note générale : Physique Langues : Anglais (eng) Mots-clés : Wavy channels Heat transfer Thermal performance Electronics cooling Laminar fluid flow Index. décimale : 536 Chaleur. Thermodynamique Résumé : Wavy channels were investigated in this paper as a passive scheme to improve the heat transfer performance of laminar fluid flow as applied to microchannel heat sinks. Parametric study of three-dimensional laminar fluid flow and heat transfer characteristics in microsized wavy channels was performed by varying the wavy feature amplitude, wavelength, and aspect ratio for different Reynolds numbers between 50 and 150. Two different types of wavy channels were considered and their thermal performance for a constant heat flux of 47 W/cm2 was compared. Based on the comparison with straight channels, it was found that wavy channels can provide improved overall thermal performance. In addition, it was observed that wavy channels with a configuration in which crests and troughs face each other alternately (serpentine channels) were found to show an edge in thermal performance over the configuration where crests and troughs directly face each other. The best configuration considered in this paper was found to provide an improvement of up to 55% in the overall performance compared to microchannels with straight walls and hence are attractive candidates for cooling of future high heat flux electronics. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&smode=strresults& [...] [article] Parametric numerical study of flow and heat transfer in microchannels with wavy walls [texte imprimé] / Gong, Liang, Auteur ; Krishna Kota, Auteur ; Wenquan Tao, Auteur . - 2011 . - pp. [051702/1-10]. Physique Langues : Anglais (eng) in Journal of heat transfer > Vol. 133 N° 5 (Mai 2011) . - pp. [051702/1-10] Mots-clés : Wavy channels Heat transfer Thermal performance Electronics cooling Laminar fluid flow Index. décimale : 536 Chaleur. Thermodynamique Résumé : Wavy channels were investigated in this paper as a passive scheme to improve the heat transfer performance of laminar fluid flow as applied to microchannel heat sinks. Parametric study of three-dimensional laminar fluid flow and heat transfer characteristics in microsized wavy channels was performed by varying the wavy feature amplitude, wavelength, and aspect ratio for different Reynolds numbers between 50 and 150. Two different types of wavy channels were considered and their thermal performance for a constant heat flux of 47 W/cm2 was compared. Based on the comparison with straight channels, it was found that wavy channels can provide improved overall thermal performance. In addition, it was observed that wavy channels with a configuration in which crests and troughs face each other alternately (serpentine channels) were found to show an edge in thermal performance over the configuration where crests and troughs directly face each other. The best configuration considered in this paper was found to provide an improvement of up to 55% in the overall performance compared to microchannels with straight walls and hence are attractive candidates for cooling of future high heat flux electronics. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&smode=strresults& [...]

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