Magnetizing force, which acts in a magnetic field of steep gradient, was applied to air in a cube heated from above and cooled from below, and with the four vertical walls thermally insulated. A four-poles magnet was installed to apply the cusp-shaped magnetic field to air in the cubic enclosure. A simple model equation was derived for magnetizing force and numerically computed for the system. Without a magnetic field, the conduction was stable, but under the magnetizing force a strong downward flow occurred from the center of the top heated plate and the average Nusselt number attained Nu=1.17 at and γ=0.5, which is equivalent to a temperature difference of 4 [°C] between the top and bottom walls under a maximum magnetic induction of 0.9 [T] inside a cube of heated from above. The flow visualization experiment with hot incense smoke proved the downward flow from the top hot plate.
Skip Nav Destination
e-mail: ozoe@cm.kyushu-u.ac.jp
Article navigation
Technical Papers
Convection Induced by a Cusp-Shaped Magnetic Field for Air in a Cube Heated From Above and Cooled From Below
Masayuki Kaneda,
Masayuki Kaneda
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga koen 6-1, Kasuga 816-8580, Japan
Search for other works by this author on:
Toshio Tagawa,
Toshio Tagawa
Institute of Advanced Material Study, Kyushu University, Kasuga koen 6-1, Kasuga 816-8580, Japan
Search for other works by this author on:
Hiroyuki Ozoe
e-mail: ozoe@cm.kyushu-u.ac.jp
Hiroyuki Ozoe
Institute of Advanced Material Study, Kyushu University, Kasuga koen 6-1, Kasuga 816-8580, Japan
Search for other works by this author on:
Masayuki Kaneda
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga koen 6-1, Kasuga 816-8580, Japan
Toshio Tagawa
Institute of Advanced Material Study, Kyushu University, Kasuga koen 6-1, Kasuga 816-8580, Japan
Hiroyuki Ozoe
Institute of Advanced Material Study, Kyushu University, Kasuga koen 6-1, Kasuga 816-8580, Japan
e-mail: ozoe@cm.kyushu-u.ac.jp
Contributed by the Heat Transfer Division for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received by the Heat Transfer Division November 7, 2000; revision received June 12, 2001. Associate Editor: R. L. Mahajan.
J. Heat Transfer. Feb 2002, 124(1): 17-25 (9 pages)
Published Online: June 12, 2001
Article history
Received:
November 7, 2000
Revised:
June 12, 2001
Citation
Kaneda, M., Tagawa , T., and Ozoe, H. (June 12, 2001). "Convection Induced by a Cusp-Shaped Magnetic Field for Air in a Cube Heated From Above and Cooled From Below ." ASME. J. Heat Transfer. February 2002; 124(1): 17–25. https://doi.org/10.1115/1.1418369
Download citation file:
Get Email Alerts
Cited By
Related Articles
Magnetohydrodynamics-Mixed Convection From Radiate Vertical Isothermal Surface Embedded in a Saturated Porous Media
J. Appl. Mech (January,2006)
Thermocapillary Flow Induced by Laser Heating of an Acoustically Levitated and Flattened Glycerin Drop
J. Heat Transfer (August,2002)
The Impact of Normal Magnetic Fields on Instability of Thermocapillary Convection in a Two-Layer Fluid System
J. Heat Transfer (June,2009)
Numerical and Experimental Analyses of Magnetic Convection of Paramagnetic Fluid in a Cylinder
J. Heat Transfer (February,2006)
Related Proceedings Papers
Related Chapters
Numerical Simulation for Nature Convection Heat Transfer of Liquid Metal Flow with Fusion Magnetic Fields
Inaugural US-EU-China Thermophysics Conference-Renewable Energy 2009 (UECTC 2009 Proceedings)
Energy Balance for a Swimming Pool
Electromagnetic Waves and Heat Transfer: Sensitivites to Governing Variables in Everyday Life
Radiation
Thermal Management of Microelectronic Equipment