Dissimilar turbulent momentum and heat transfer associated with viscoelastic vibration in channel flow

Shumpei Hara; Kana Watanabe; Yuichi Kaiho; Takahiro Tsukahara; Yasuo Kawaguchi

doi:10.1016/j.ijheatmasstransfer.2023.123991

Dissimilar turbulent momentum and heat transfer associated with viscoelastic vibration in channel flow

Shumpei Hara
, Kana Watanabe
, Yuichi Kaiho
, Takahiro Tsukahara
, Yasuo Kawaguchi

Department of Mechanical and Aerospace Engineering

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

This experimental study on the momentum and heat transfer in drag-reducing turbulent channel flow of surfactant solution, i.e., viscoelastic fluid, has revealed a viscoelastic vibration (VEV) as a novel type of ordered turbulent motion in the wall vicinity where the elastic energy is transformed into turbulent kinetic energy. The VEV is a wave-like motion of low-frequency modes in the streamwise direction and causes zero average Reynolds shear stress. However, thermal diffusion occurs continuously due to the movement of a fluid lump owing to the VEV via the additional action of pressure.

Original language	English
Article number	123991
Journal	International Journal of Heat and Mass Transfer
Volume	207
DOIs	https://doi.org/10.1016/j.ijheatmasstransfer.2023.123991
Publication status	Published - 15 Jun 2023

Keywords

Dissimilarity
Drag reduction
Heat transfer reduction
Turbulent flow
Viscoelastic fluid

Access to Document

10.1016/j.ijheatmasstransfer.2023.123991

Cite this

@article{293046d27987430abcb09e5aaf11d171,

title = "Dissimilar turbulent momentum and heat transfer associated with viscoelastic vibration in channel flow",

abstract = "This experimental study on the momentum and heat transfer in drag-reducing turbulent channel flow of surfactant solution, i.e., viscoelastic fluid, has revealed a viscoelastic vibration (VEV) as a novel type of ordered turbulent motion in the wall vicinity where the elastic energy is transformed into turbulent kinetic energy. The VEV is a wave-like motion of low-frequency modes in the streamwise direction and causes zero average Reynolds shear stress. However, thermal diffusion occurs continuously due to the movement of a fluid lump owing to the VEV via the additional action of pressure.",

keywords = "Dissimilarity, Drag reduction, Heat transfer reduction, Turbulent flow, Viscoelastic fluid",

author = "Shumpei Hara and Kana Watanabe and Yuichi Kaiho and Takahiro Tsukahara and Yasuo Kawaguchi",

note = "Publisher Copyright: {\textcopyright} 2023",

year = "2023",

month = jun,

day = "15",

doi = "10.1016/j.ijheatmasstransfer.2023.123991",

language = "English",

volume = "207",

journal = "International Journal of Heat and Mass Transfer",

issn = "0017-9310",

publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Dissimilar turbulent momentum and heat transfer associated with viscoelastic vibration in channel flow

AU - Hara, Shumpei

AU - Watanabe, Kana

AU - Kaiho, Yuichi

AU - Tsukahara, Takahiro

AU - Kawaguchi, Yasuo

PY - 2023/6/15

Y1 - 2023/6/15

N2 - This experimental study on the momentum and heat transfer in drag-reducing turbulent channel flow of surfactant solution, i.e., viscoelastic fluid, has revealed a viscoelastic vibration (VEV) as a novel type of ordered turbulent motion in the wall vicinity where the elastic energy is transformed into turbulent kinetic energy. The VEV is a wave-like motion of low-frequency modes in the streamwise direction and causes zero average Reynolds shear stress. However, thermal diffusion occurs continuously due to the movement of a fluid lump owing to the VEV via the additional action of pressure.

AB - This experimental study on the momentum and heat transfer in drag-reducing turbulent channel flow of surfactant solution, i.e., viscoelastic fluid, has revealed a viscoelastic vibration (VEV) as a novel type of ordered turbulent motion in the wall vicinity where the elastic energy is transformed into turbulent kinetic energy. The VEV is a wave-like motion of low-frequency modes in the streamwise direction and causes zero average Reynolds shear stress. However, thermal diffusion occurs continuously due to the movement of a fluid lump owing to the VEV via the additional action of pressure.

KW - Dissimilarity

KW - Drag reduction

KW - Heat transfer reduction

KW - Turbulent flow

KW - Viscoelastic fluid

UR - https://www.scopus.com/pages/publications/85149362027

U2 - 10.1016/j.ijheatmasstransfer.2023.123991

DO - 10.1016/j.ijheatmasstransfer.2023.123991

M3 - Article

AN - SCOPUS:85149362027

SN - 0017-9310

VL - 207

JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

M1 - 123991

ER -

Dissimilar turbulent momentum and heat transfer associated with viscoelastic vibration in channel flow

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this