Experimental investigation on heat transfer characteristics in rectangular duct flow of a magnetic fluid under magnetic field

Masaaki Motozawa, Jia Chang, Tatsuo Sawada, Yasuo Kawaguchi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Forced convective heat transfer characteristics in a rectangular duct flow of a magnetic fluid under a magnetic field were investigated experimentally. Experiments were performed in which the magnetic field intensity was changed from 0 mT to 500 mT. The Reynolds number based on the hydraulic diameter was set to 820 (laminar flow), 1630 and 2450 (turbulent flow). The magnetic fluid in the rectangular duct was heated with a uniform heat flux. The results of the experiments showed that in the case of laminar flow of the magnetic fluid, when the magnetic field is applied to the magnetic fluid flow, the heat transfer coefficient increases locally in the region where the magnetic field exists. In contrast, in the turbulent flow of the magnetic fluid, heat transfer is not enhanced, but slightly decreases.

Original languageEnglish
Pages (from-to)583-588
Number of pages6
JournalInternational Journal of Applied Electromagnetics and Mechanics
Volume39
Issue number1-4
DOIs
Publication statusPublished - 2012

Fingerprint

Magnetic fluids
ducts
Ducts
heat transfer
Magnetic fields
Heat transfer
fluids
laminar flow
magnetic fields
turbulent flow
Laminar flow
Turbulent flow
convective heat transfer
heat transfer coefficients
hydraulics
fluid flow
magnetic flux
heat flux
Reynolds number
Heat transfer coefficients

Keywords

  • Forced convective heat transfer
  • Magnetic fluid
  • Rectangular duct

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Mechanics of Materials
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Experimental investigation on heat transfer characteristics in rectangular duct flow of a magnetic fluid under magnetic field. / Motozawa, Masaaki; Chang, Jia; Sawada, Tatsuo; Kawaguchi, Yasuo.

In: International Journal of Applied Electromagnetics and Mechanics, Vol. 39, No. 1-4, 2012, p. 583-588.

Research output: Contribution to journalArticle

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