Local flow and heat transfer characteristics of viscoelastic fluid in a serpentine channel

•Heat transfer is enhanced compared with Newtonian fluids for low Reynolds number conditions.•Single and pair of vortices develop with streamwise direction and increase of Weissenberg number.•Swinging motions of the main flow in the channel cross section affect the vortex structure.•Top-bottom and s...

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Bibliographic Details
Published inInternational journal of heat and mass transfer Vol. 138; pp. 432 - 442
Main Authors Tatsumi, Kazuya, Nagasaka, Wataru, Kimura, Ryuichi, Shinotsuka, Naoaki, Kuriyama, Reiko, Nakabe, Kazuyoshi
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.08.2019
Elsevier BV
Subjects
Local flow
Serpentine
Viscoelastic fluids
Viscoelasticity
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Summary:•Heat transfer is enhanced compared with Newtonian fluids for low Reynolds number conditions.•Single and pair of vortices develop with streamwise direction and increase of Weissenberg number.•Swinging motions of the main flow in the channel cross section affect the vortex structure.•Top-bottom and sidewall heat transfer significantly changes by the main flow and vortex structures.•Vortex type, heat transfer at walls, and Weissenberg number are highly correlated.
ISSN:0017-9310
1879-2189
DOI:10.1016/j.ijheatmasstransfer.2019.03.173