Numerical Study of Buoyancy Convection of Air under Permanent Magnetic Field and Comparison with That under Gravity Field
Joint Authors
Song, Kewei
Li, Wenkai
Zhou, Yang
Lu, Yuanru
Source
Mathematical Problems in Engineering
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-09-03
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
Magnetothermal free convection of air in a square enclosure under a nonuniform magnetic field provided by a permanent neodymium-iron-boron magnet is numerically studied.
The natural convection under the gravity field alone is also studied for comparison.
The physical fields of magnetizing force, velocity, and temperature as well as the local distribution characteristic of Nusselt number are all presented in this paper.
The results show that the buoyancy convection of air in the square enclosure under magnetic field is quite different from that under the gravity field.
The local value of Nusselt number under the magnetic field supplied by a permanent magnet with a residual magnetic flux density of about 4.5 Tesla can reach a high value of about three times larger than the maximum local value of Nusselt number under the gravity field.
Relatively uniform distributions of temperature gradient and Nusselt number can be obtained along the cold wall of the enclosure under the magnetic field.
A permanent magnet with high magnetic energy product with B r reaching to 3.5 Tesla can play a comparative role on the averaged Nusselt number compared with that under the gravity environment.
American Psychological Association (APA)
Song, Kewei& Li, Wenkai& Zhou, Yang& Lu, Yuanru. 2014. Numerical Study of Buoyancy Convection of Air under Permanent Magnetic Field and Comparison with That under Gravity Field. Mathematical Problems in Engineering،Vol. 2014, no. 2014, pp.1-13.
https://search.emarefa.net/detail/BIM-1044309
Modern Language Association (MLA)
Song, Kewei…[et al.]. Numerical Study of Buoyancy Convection of Air under Permanent Magnetic Field and Comparison with That under Gravity Field. Mathematical Problems in Engineering No. 2014 (2014), pp.1-13.
https://search.emarefa.net/detail/BIM-1044309
American Medical Association (AMA)
Song, Kewei& Li, Wenkai& Zhou, Yang& Lu, Yuanru. Numerical Study of Buoyancy Convection of Air under Permanent Magnetic Field and Comparison with That under Gravity Field. Mathematical Problems in Engineering. 2014. Vol. 2014, no. 2014, pp.1-13.
https://search.emarefa.net/detail/BIM-1044309
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1044309