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	Active enhancement of convection heat transfer of air in a rectangular channel by magnetically induced longitudinal vortices
	Yang Li-Jun ; Ren Jian-Xun ; Du Xiao-Ze ; Yang Yong-Ping ; Liu Deng-Ying
	2010-10-12 ; 2010-10-12
关键词	Theoretical or Mathematical/ channel flow convection laminar flow magnetohydrodynamics vortices/ convection heat transfer rectangular channel magnetically induced longitudinal vortices fluid flows laminar flow friction coefficients Nusselt numbers field synergy principle/ A4725Q Convection and heat transfer A4760 Flows in ducts, channels, and conduits A4730 Rotational flow, vortices, buoyancy and other flows involving body forces A4765 Magnetohydrodynamics and electrohydrodynamics A4715 Laminar flows
中文摘要	The gradient magnetic field introduced to convection heat transfer in a channel can result in longitudinal vortices in fluid flows. The laminar flow and heat transfer characteristics of air in a rectangular channel confined to magnetic bi-pole and quadrupole fields were numerically investigated. The velocity and temperature fields were obtained and the friction coefficients and Nusselt numbers were compared at different Reynolds numbers and wall temperatures for both hydraulically and thermally developing and fully developed flows. Different longitudinal vortices were presented for convection heat transfer in the magnetic bi-pole and quadrupole fields. The vortex-induced heat transfer enhancement was discussed by using the field synergy principle. The results show that the synergy between the flow and temperature fields can be improved by the magnetically induced longitudinal vortices. For hydraulically and thermally developing flows, the synergy between the flow and temperature fields in the magnetic quadrupole field was superior to that in the bi-pole field. For hydraulically and thermally fully developed flows, however, the synergy in the magnetic quadrupole field was worse than that in the bi-pole field.
语种	英语
出版者	Begell House Inc. ; USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/78976]
专题	清华大学
推荐引用方式 GB/T 7714	Yang Li-Jun,Ren Jian-Xun,Du Xiao-Ze,et al. Active enhancement of convection heat transfer of air in a rectangular channel by magnetically induced longitudinal vortices[J],2010, 2010.
APA	Yang Li-Jun,Ren Jian-Xun,Du Xiao-Ze,Yang Yong-Ping,&Liu Deng-Ying.(2010).Active enhancement of convection heat transfer of air in a rectangular channel by magnetically induced longitudinal vortices..
MLA	Yang Li-Jun,et al."Active enhancement of convection heat transfer of air in a rectangular channel by magnetically induced longitudinal vortices".(2010).

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