Influence of double-sided delta-wing tape insert with alternate-axes on flow and heat transfer characteristics in a heat exchanger tube

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dc.contributor.authorEiamsa-ard, Smith
dc.contributor.authorPromvonge, Pongjet
dc.date.accessioned2026-08-06T10:01:47Z
dc.date.available2026-08-06T10:01:47Z
dc.date.issued2011-01-01
dc.description.abstractThe convective heat transfer and friction behaviors of turbulent tube flow through a straight tape with double-sided delta wings (T-W) have been studied experimentally. In the current work, the T-W formed on the tape was used as vortex generators for enhancing the heat transfer coefficient by breakdown of thermal boundary layer and by mixing of fluid flow in tubes. The T-W characteristics are (1) T-W with forward/backward-wing arrangement, (2) T-W with alternate axis (T-WA), (3) three wing-width ratios and (4) wing-pitch ratios. The experimental result reveals that for using the T-W, the increases in the mean Nusselt number (Nu) and friction factor are, respectively, up to 165% and 14.8 times of the plain tube and the maximum thermal performance factor is 1.19. It is also obvious that the T-W with forward-wing gives higher heat transfer rate than one with backward-wing around 7%. The present investigation also shows that the heat transfer rate and friction factor obtained from the T-WA is higher than that from the T-W. In addition, the flow pattern and temperature fields in the T-W tube with both backward and forward wings were also examined numerically.
dc.identifier.citationChinese Journal of Chemical Engineering, 19(3), 410-423, 2011
dc.identifier.doi10.1016/S1004-9541(11)60001-3
dc.identifier.issn10049541
dc.identifier.other2-s2.0-80051845142
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/3486
dc.sourceChinese Journal of Chemical Engineering
dc.subjectAlternate axis
dc.subjectFluid flow
dc.subjectHeat transfer
dc.subjectTape with centre-wing
dc.subjectVortex
dc.subjectWing
dc.titleInfluence of double-sided delta-wing tape insert with alternate-axes on flow and heat transfer characteristics in a heat exchanger tube
dc.typeArticle

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