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Heat transfer characteristics of a swirling laminar impinging jet / Koichi Ichimiya in Journal of heat transfer, Vol. 132 N° 1 (Janvier 2010) 

Public ISBD [article]  in Journal of heat transfer > Vol. 132 N° 1 (Janvier 2010) . - pp. [012201-1/5] Titre : Heat transfer characteristics of a swirling laminar impinging jet Type de document : texte imprimé Auteurs : Koichi Ichimiya, Auteur ; Koji Tsukamoto, Auteur Article en page(s) : pp. [012201-1/5] Note générale : Physique Langues : Anglais (eng) Mots-clés : Impinging  jet  Swirl  Heat  transfer  enchancement  Swirl  number Index. décimale : 536 Chaleur. Thermodynamique Résumé : This paper describes the characteristics of the heat transfer and flow of a swirling laminar impinging jet in a comparatively narrow space with a confined wall. Air is impinged on a flat surface with constant wall temperature. The heat transfer and flow field were analyzed numerically by solving three-dimensional governing equations. Heat transfer experiment and flow visualization were also performed. Numerical heat transfer was compared with experimental results. Temperature distribution and velocity vectors in the space were obtained for various swirl numbers at Reynolds number Re=2000. The numerical and experimental results show that the swirling jet enhances or depresses the local heat transfer, and the average Nusselt number ratio with and without swirl takes a peak at a certain swirl number. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...] [article] Heat transfer characteristics of a swirling laminar impinging jet [texte imprimé] / Koichi Ichimiya, Auteur ; Koji Tsukamoto, Auteur . - pp. [012201-1/5]. Physique Langues : Anglais (eng) in Journal of heat transfer > Vol. 132 N° 1 (Janvier 2010) . - pp. [012201-1/5] Mots-clés : Impinging  jet  Swirl  Heat  transfer  enchancement  Swirl  number Index. décimale : 536 Chaleur. Thermodynamique Résumé : This paper describes the characteristics of the heat transfer and flow of a swirling laminar impinging jet in a comparatively narrow space with a confined wall. Air is impinged on a flat surface with constant wall temperature. The heat transfer and flow field were analyzed numerically by solving three-dimensional governing equations. Heat transfer experiment and flow visualization were also performed. Numerical heat transfer was compared with experimental results. Temperature distribution and velocity vectors in the space were obtained for various swirl numbers at Reynolds number Re=2000. The numerical and experimental results show that the swirling jet enhances or depresses the local heat transfer, and the average Nusselt number ratio with and without swirl takes a peak at a certain swirl number. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...]