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The effect of spanwise width on rectangular jets with sidewalls / Deepak Rangarajan in Transactions of the ASME . Journal of fluids engineering, Vol. 134 N° 3 (Mars 2012) 

Public ISBD [article]  in Transactions of the ASME . Journal of fluids engineering > Vol. 134 N° 3 (Mars 2012) . - 08 p. Titre : The effect of spanwise width on rectangular jets with sidewalls Type de document : texte imprimé Auteurs : Deepak Rangarajan, Auteur ; Jennifer S. Curtis, Auteur Année de publication : 2012 Article en page(s) : 08 p. Note générale : Fluids engineering Langues : Anglais (eng) Mots-clés : Spanwise  width;  rectangular  jet;  sidewalls Résumé : A CFD study on the effect of spanwise width on a rectangular jet with sidewalls is conducted using a standard k-epsilon model with wall functions. An order of magnitude analysis reveals the role played by spanwise turbulent shear terms, arising from the wall bounded flow, as the aspect ratio is decreased at high streamwise distances. A comparative study involving experimental data and other turbulence models is also presented to validate the k-epsilon model for this confined jet flow. It is found that the effect of bounding walls is negligible up to a streamwise distance of at least 105 jet diameters for an aspect ratio of 40, however this distance, within which the flow can be approximated as two-dimensional, decreases with decrease in aspect ratio. DEWEY : 620.1 ISSN : 0098-2202 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JFEGA4000134000003 [...] [article] The effect of spanwise width on rectangular jets with sidewalls [texte imprimé] / Deepak Rangarajan, Auteur ; Jennifer S. Curtis, Auteur . - 2012 . - 08 p. Fluids engineering Langues : Anglais (eng) in Transactions of the ASME . Journal of fluids engineering > Vol. 134 N° 3 (Mars 2012) . - 08 p. Mots-clés : Spanwise  width;  rectangular  jet;  sidewalls Résumé : A CFD study on the effect of spanwise width on a rectangular jet with sidewalls is conducted using a standard k-epsilon model with wall functions. An order of magnitude analysis reveals the role played by spanwise turbulent shear terms, arising from the wall bounded flow, as the aspect ratio is decreased at high streamwise distances. A comparative study involving experimental data and other turbulence models is also presented to validate the k-epsilon model for this confined jet flow. It is found that the effect of bounding walls is negligible up to a streamwise distance of at least 105 jet diameters for an aspect ratio of 40, however this distance, within which the flow can be approximated as two-dimensional, decreases with decrease in aspect ratio. DEWEY : 620.1 ISSN : 0098-2202 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JFEGA4000134000003 [...]