Structure of thermal boundary layer and heat transfer characteristics in drag reducing flow with surfactant additive

Yasuo Kawaguchi, Hisashi Daisaka, Akira Yabe, Koichi Hishida, Masanobu Maeda

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Heat transfer characteristics of a dilute surfactant/water solution in a two dimensional channel has been experimentally investigated. It is known that surfactant solutions do show a large sensitivity of their drag reduction and heat transfer reduction effectiveness on temperature. In the present experiment, the heat transfer at fixed Reynolds number increased three times when temperature increases only 3 deg. Temperature profile measurements in the thermal boundary layer were also made. It was found that high diffusivity layer exists near the wall in the drag reducing thermal boundary layer. The relation with high difussivity layer and heat transfer coefficient is discussed.

Original languageEnglish
Pages (from-to)1311-1318
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume67
Issue number658
DOIs
Publication statusPublished - 2001 Jun

Keywords

  • Channel flow
  • Drag reduction
  • Forced covection
  • Non-newtonian fluid
  • Surfactant solution
  • Turbulent flow
  • Viscoelastic fluid

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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