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Heat transfer enhancement using laminar gas-liquid segmented plug flows in Journal of heat transfer, Vol. 133 N° 4 (Avril 2011)
Heat transfer enhancement using laminar gas-liquid segmented plug flows [texte imprimé] / Y. S. Muzychka, Auteur ; Edmond J. Walsh, Auteur ; P. Walsh, Auteur . - 2011 . - pp. [041902/1-9].
Physique
Langues : Anglais (eng)
in Journal of heat transfer > Vol. 133 N° 4 (Avril 2011) . - pp. [041902/1-9]
Mots-clés : Heat transfer Segmented flow Two phase Thermal enhancement Graetz Plug Poiseuille Taylor Index. décimale : 536 Chaleur. Thermodynamique Résumé : Heat transfer enhancement using segmented nonboiling gas-liquid flow is examined. Segmentation results in a two phase flow of liquid/gas having a constant liquid fraction; i.e., no phase change occurs. In this flow configuration, enhanced heat transfer occurs as a result of a shorter effective thermal length due to internal fluid circulation in the liquid plugs. A simple theory for laminar segmented flows is developed based on scaled Graetz theory and comparisons made with existing published data from the literature and new experimental data obtained in a companion study. The proposed model is valid for an isothermal tube wall provided that the axial residence time of the flow is such that dimensionless tube length L[small star, filled] DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&smode=strresults& [...]
