Thermodynamic Behaviors of Magnetic-Fluid in a Thin Channel with Magnetic Field and Aspect Ratio

Title
Thermodynamic Behaviors of Magnetic-Fluid in a Thin Channel with Magnetic Field and Aspect Ratio
Author(s)
김성철J. Seo[J. Seo]이동연D.Hong[D.Hong]S. Kang[S. Kang]M. Lee[M. Lee]
Keywords
HEAT-TRANSFER; FERROFLUID; FLOW; SIMULATION
Issue Date
201407
Publisher
KOREAN SOC PRECISION ENG
Citation
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING, v.15, no.7, pp.1377 - 1382
Abstract
The objective of this study is to numerically investigate the. thermodynamic behaviors of a magnetic fluid with nano-sized magnetic particles in a thin channel. The numerical model developed using the FEM (finite element method) technique with mesh sensitivity analysis was validated with existing data and thermodynamic characteristics such as isotherms, streamlines and Nusselt numbers of the magnetic fluid were analyzed with variations of the composition of magnetite, the aspect ratio, the magnetic field intensity and the inclination angle of the channel. The numerical analysis showed the increase in the magnetic volume force in the thin channel with increasing magnetic field intensity and magnetic fluid viscosity. Under all magnetic field intensities, the mean Nusselt numbers of the magnetic fluid in the thin channel at the inclination angle of 45 were on average 77.9% higher than those at the inclination angle of 15 due to the increased convective heat transfer in the thin channel.
URI
http://hdl.handle.net/YU.REPOSITORY/31548http://dx.doi.org/10.1007/s12541-014-0479-6
ISSN
2234-7593
Appears in Collections:
공과대학 > 기계공학부 > Articles
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