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http://dx.doi.org/10.4283/JKMS.2013.23.2.077

Experimental Study on the Natural Convective Heat Transfer Characteristics of Ferrofluid for Concentric Annuli under Rotating Magnetic Field  

Kim, Hyung-Jin (Graduate School of Mechanical Engineering, Dong-A University)
Seo, Jae-Hyeong (Graduate School of Mechanical Engineering, Dong-A University)
Kim, Dae-Wan (Graduate School of Mechanical Engineering, Dong-A University)
Lee, Moo-Yeon (Department of Mechanical Engineering, Dong-A University)
Seo, Lee-Soo (Graduate School of Mechanical Engineering, Dong-A University)
Publication Information
Journal of the Korean Magnetics Society / v.23, no.2, 2013 , pp. 77-81 More about this Journal
Abstract
The objective of this study is experimentally to investigate natural convective heat transfer characteristics of the ferrofluid for a concentric annuli under rotating magnetic field with variations of the revolution and the magnetic field strength. The rotating magnetic field was provided by induction motor with 6 poles and 3 phases and the revolution and the magnetic field strength were controlled by an inverter driver and a voltage meter, respectively. Temperatures of the inner pipe and the outer pipe in the tested concentric annuli were maintained at $30^{\circ}C$ and $25^{\circ}C$, respectively, during the test and the direction of the rotating magnetic field was a counterclockwise. As a result, the natural convective heat transfer characteristics of the ferrofluid for a concentric annuli were increased with the rise of the revolution and magnetic field strength due to the increased heat dissipation between hot side and cold side of the concentric annuli.
Keywords
rotating magnetic field; concentric annuli; magnetic field strength; ferrofluid; natural convection;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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