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Titre :
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Heat transfer enhancement using laminar gas-liquid segmented plug flows (2011)
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Auteurs :
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Y. S. Muzychka, Auteur ;
Edmond J. Walsh, Auteur ;
P. Walsh, Auteur
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Type de document :
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Article : texte imprimé
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Dans :
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Journal of heat transfer (Vol. 133 N° 4, Avril 2011)
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Article en page(s) :
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pp. [041902/1-9]
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Note générale :
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Physique
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Langues :
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Anglais
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Index. décimale :
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536 (Chaleur. Thermodynamique)
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Tags :
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Heat transfer Segmented flow Two phase Thermal enhancement Graetz Plug Poiseuille Taylor
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Résumé :
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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]<0.1.
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DEWEY :
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536
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ISSN :
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0022-1481
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En ligne :
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http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&smode=strresults&sort=chron&maxdisp=25&threshold=0&pjournals=JHTRAO&pyears=2011&possible1zone=article&fromvolume=133&fromissue=4&OUTLOG=NO&viewabs=JHTRAO&key=DISPLAY&docID=20&page=1&chapter=0
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