Journal
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
Volume 53, Issue 15-16, Pages 3193-3201Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2010.03.007
Keywords
Two-phase; Slug flow; Non-boiling; Thermography; Heat transfer; Mass transfer; Slug aspect ratio
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Funding
- Enterprise Ireland
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This paper investigates the mechanisms leading to enhanced heat and/or mass transfer rates in two-phase non-boiling slug Flows. The problem is analyzed in a minichannel geometry subjected to a constant heat flux boundary. Local Nusselt numbers, obtained using Infrared thermography are analyzed in both entrance and fully developed Flow regions. These novel measurements highlight the physics governing slug-Flow heat transfer and results indicate that optimized slug geometries can yield up to an order of magnitude heat transfer enhancement. Finally, based on the physics identified, a heat transfer model is developed which is also applicable to similar mass transfer problems. (C) 2010 Elsevier Ltd. All rights reserved.
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