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dc.contributor.authorNaphon P.
dc.contributor.authorArisariyawong T.
dc.contributor.authorNualboonrueng T.
dc.description.abstractA computation fluid dynamics study has been performed to analyze the nanofluids heat transfer and flow characteristics in the spirally coiled tubes. Eulerian two-phase turbulent model is applied to simulate the heat transfer and flow characteristics in the vertical spirally coiled tube. The spirally coiled tubes are fabricated by bending a 8.50 mm inner diameter straight copper tube into a spiral-coil with two different curvature ratios of 0.035, 0.060. The predicted results are verified with the present measured data. Reasonable agreement is obtained from the comparison between the measured data and the predicted results. In addition, due to the centrifugal force, the induced secondary flow has significant effect on the heat transfer enhancement as flowing through the spirally coiled tube. Effects of curvature, nanofluids concentration and hot water temperature on the nanofluids heat transfer characteristics and pressure drop are considered. © 2017, Springer-Verlag Berlin Heidelberg.
dc.subjectBending (forming)
dc.subjectHeat transfer
dc.subjectTubes (components)
dc.subjectTwo phase flow
dc.subjectCentrifugal Forces
dc.subjectComputation fluid dynamics
dc.subjectCurvature ratio
dc.subjectHeat transfer and flows
dc.subjectHeat transfer characteristics
dc.subjectHeat Transfer enhancement
dc.subjectInner diameters
dc.subjectTurbulent models
dc.titleNanofluids heat transfer and flow analysis in vertical spirally coiled tubes using Eulerian two-phase turbulent model
dc.identifier.bibliograpycitationHeat and Mass Transfer/Waerme- und Stoffuebertragung. Vol 53, No.7 (2017), p.2297-2308
Appears in Collections:Scopus 1983-2021

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