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Proceedings of CHT-08 ICHMT International Symposium on Advances in Computational Heat Transfer
May, 11-16, 2008, Marrakesh, Morocco

DOI: 10.1615/ICHMT.2008.CHT


ISBN Print: 978-1-56700-253-9

ISSN: 2578-5486

HEAT AND MASS TRANSFER IN EVAPORATING A TURBULENT LIQUID FILM FALLING ALONG A VERTICAL TUBE

page 10
DOI: 10.1615/ICHMT.2008.CHT.1610
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ABSTRACT

This study investigates the evaporation of pure benzene in dry air in an externally insulated tube. A numerical model has been built from the conservation equations in the gas and the liquid phases. The coupled governing equations are solved together with the boundary and interfacial conditions using implicit method. A modified van Driest model has been utilized to formulate the turbulent flow in the liquid film. Results are specifically presented for a benzene-air system under various conditions. In this analysis the coupled effects of inlet liquid temperature and Reynolds number are examined. The results show that better film cooling is observed when liquid is feeding with low Reynolds number and a relatively high inlet liquid temperature.

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