Effect of magnetic field on heat transfer in rectangular duct flow of a magnetic fluid

Masaaki Motozawa; Jia Chang; Tatsuo Sawada; Yasuo Kawaguchi

doi:10.1016/j.phpro.2010.11.043

Effect of magnetic field on heat transfer in rectangular duct flow of a magnetic fluid

Masaaki Motozawa, Jia Chang, Tatsuo Sawada, Yasuo Kawaguchi

Department of Mechanical Engineering

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

55 Citations (Scopus)

Abstract

Effect of magnetic field on heat transfer in rectangular duct flow of a magnetic fluid was investigated experimentally. Experiment was performed with changing magnetic field intensity and this magnetic field can be varied from 0 mT to 500 mT. The magnetic fluid used in this experiment is water-based magnetic fluid named W-40. Magnetic fluid in the rectangular duct is heated with uniform heat flux. Reynolds number based on the hydraulic diameter was chosen 780 in magnetic fluid flow. Therefore, the flow in this experiment was laminar flow. As a result of this experiment, heat transfer coefficient increases locally in the region where magnetic field exists. This heat transfer coefficient becomes large with increasing magnetic field intensity and this increase of heat transfer coefficient is saturated. About 20 % of maximum increasing rate of heat transfer was obtained in the laminar flow of the magnetic fluid with applying magnetic field.

Original language	English
Pages (from-to)	190-193
Number of pages	4
Journal	Physics Procedia
Volume	9
DOIs	https://doi.org/10.1016/j.phpro.2010.11.043
Publication status	Published - 2010

Keywords

Heat transfer
Laminar flow
Magnetic fluid
Rectangular duct

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1016/j.phpro.2010.11.043

Cite this

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title = "Effect of magnetic field on heat transfer in rectangular duct flow of a magnetic fluid",

abstract = "Effect of magnetic field on heat transfer in rectangular duct flow of a magnetic fluid was investigated experimentally. Experiment was performed with changing magnetic field intensity and this magnetic field can be varied from 0 mT to 500 mT. The magnetic fluid used in this experiment is water-based magnetic fluid named W-40. Magnetic fluid in the rectangular duct is heated with uniform heat flux. Reynolds number based on the hydraulic diameter was chosen 780 in magnetic fluid flow. Therefore, the flow in this experiment was laminar flow. As a result of this experiment, heat transfer coefficient increases locally in the region where magnetic field exists. This heat transfer coefficient becomes large with increasing magnetic field intensity and this increase of heat transfer coefficient is saturated. About 20 % of maximum increasing rate of heat transfer was obtained in the laminar flow of the magnetic fluid with applying magnetic field.",

keywords = "Heat transfer, Laminar flow, Magnetic fluid, Rectangular duct",

author = "Masaaki Motozawa and Jia Chang and Tatsuo Sawada and Yasuo Kawaguchi",

year = "2010",

doi = "10.1016/j.phpro.2010.11.043",

language = "English",

volume = "9",

pages = "190--193",

journal = "Physics Procedia",

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T1 - Effect of magnetic field on heat transfer in rectangular duct flow of a magnetic fluid

AU - Motozawa, Masaaki

AU - Chang, Jia

AU - Sawada, Tatsuo

AU - Kawaguchi, Yasuo

PY - 2010

Y1 - 2010

N2 - Effect of magnetic field on heat transfer in rectangular duct flow of a magnetic fluid was investigated experimentally. Experiment was performed with changing magnetic field intensity and this magnetic field can be varied from 0 mT to 500 mT. The magnetic fluid used in this experiment is water-based magnetic fluid named W-40. Magnetic fluid in the rectangular duct is heated with uniform heat flux. Reynolds number based on the hydraulic diameter was chosen 780 in magnetic fluid flow. Therefore, the flow in this experiment was laminar flow. As a result of this experiment, heat transfer coefficient increases locally in the region where magnetic field exists. This heat transfer coefficient becomes large with increasing magnetic field intensity and this increase of heat transfer coefficient is saturated. About 20 % of maximum increasing rate of heat transfer was obtained in the laminar flow of the magnetic fluid with applying magnetic field.

AB - Effect of magnetic field on heat transfer in rectangular duct flow of a magnetic fluid was investigated experimentally. Experiment was performed with changing magnetic field intensity and this magnetic field can be varied from 0 mT to 500 mT. The magnetic fluid used in this experiment is water-based magnetic fluid named W-40. Magnetic fluid in the rectangular duct is heated with uniform heat flux. Reynolds number based on the hydraulic diameter was chosen 780 in magnetic fluid flow. Therefore, the flow in this experiment was laminar flow. As a result of this experiment, heat transfer coefficient increases locally in the region where magnetic field exists. This heat transfer coefficient becomes large with increasing magnetic field intensity and this increase of heat transfer coefficient is saturated. About 20 % of maximum increasing rate of heat transfer was obtained in the laminar flow of the magnetic fluid with applying magnetic field.

KW - Heat transfer

KW - Laminar flow

KW - Magnetic fluid

KW - Rectangular duct

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Effect of magnetic field on heat transfer in rectangular duct flow of a magnetic fluid

Abstract

Keywords

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