Publication de 8 numéros par an
ISSN Imprimer: 1065-5131
ISSN En ligne: 1563-5074
Indexed in
Heat Transfer Enhancement Using Turbulent Promoters for Drag-Reducing Surfactant Aqueous Solution Flow
RÉSUMÉ
Both enhancement of heat transfer and the reduction of pressure loss are important in order to achieve high-performance heat exchangers. In this article, characteristics of fluid flow and heat transfer of a drag-reducing dilute cationic surfactant solution in a channel and a tube are investigated to realize a high heat exchanger. It is attainable for the reduction of the turbulent frictional drag by dilute polymeric and surfactant aqueous solutions. However, many investigations, which are of full drag-reducing flow without disturbance, have shown that heat transfer is reduced simultaneously. In order to recover the reduced heat transfer, the effect of some turbulent promoters and a row of delta-winglets that generate the longitudinal vortices was tested in a two-dimensional channel. Furthermore, an examination of the relation between heat transport and momentum was carried out; it was found that the critical velocity corresponding to the critical Reynolds number at which the drag-reduction effect reaches a maximum value solely depends on the concentration of the surfactant solution.
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Różański Jacek, Różańska Sylwia, Heat Transfer Enhancement During the Flow of Drag-Reducing Surfactant Solutions, in Practical Aspects of Chemical Engineering, 2020. Crossref
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Ayhan‐Sarac Betül, Karlık Bekir, Bali Tülin, Ayhan Teoman, Neural network methodology for heat transfer enhancement data, International Journal of Numerical Methods for Heat & Fluid Flow, 17, 8, 2007. Crossref