Abonnement à la biblothèque: Guest
Portail numérique Bibliothèque numérique eBooks Revues Références et comptes rendus Collections
Heat Transfer Research
Facteur d'impact: 1.199 Facteur d'impact sur 5 ans: 1.155 SJR: 0.267 SNIP: 0.503 CiteScore™: 1.4

ISSN Imprimer: 1064-2285
ISSN En ligne: 2162-6561

Volumes:
Volume 51, 2020 Volume 50, 2019 Volume 49, 2018 Volume 48, 2017 Volume 47, 2016 Volume 46, 2015 Volume 45, 2014 Volume 44, 2013 Volume 43, 2012 Volume 42, 2011 Volume 41, 2010 Volume 40, 2009 Volume 39, 2008 Volume 38, 2007 Volume 37, 2006 Volume 36, 2005 Volume 35, 2004 Volume 34, 2003 Volume 33, 2002 Volume 32, 2001 Volume 31, 2000 Volume 30, 1999 Volume 29, 1998 Volume 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.2015007386
pages 1101-1121

HEAT TRANSFER ENHANCEMENT OF MHD FLOW BY A ROW OF MAGNETIC OBSTACLES

Xidong Zhang
Academy of Frontier Science, Nanjing University of Aeronautics and Astronautics, 29 Yudao St., Nanjing, Jiangsu 210016, P.R.China
Hulin Huang
College of Astronautics, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing 210016, China

RÉSUMÉ

The appearance of vortex-shedding phenomena in electrically conducting viscous fluid flow past a magnetic obstacle is similar to the flow behind solid obstacles. This feature can be used for efficient enhancement of the wall-heat transfer, for better mixing of passive scalars or for the flow control of electrically conductive fluid. In the present work, the fluid flow and heat transfer characteristics around a row of magnetic obstacles are investigated numerically. The heat transfer behaviors, flow resistance, and vortex structures of the magnetic obstacles are presented, and the influence of dimensionless parameters, such as Reynolds numbers and interaction parameters, are also discussed. It is shown that the downstream cross-stream mixing induced by the magnetic obstacle wakes can enhance the wall heat transfer, so that the maximum value of percentage heat transfer increment (HI) is equal to about 69.5%. Moreover, the global thermal performance factor is increasingly dependent on the interaction parameter for a constant Reynolds number.


Articles with similar content:

HEAT TRANSFER AUGMENTATION OF A TRANSFORMER OIL FLOW IN A SMOOTH TUBE BY EHD EFFECT UNDER HIGH TEMPERATURES
Journal of Enhanced Heat Transfer, Vol.18, 2011, issue 2
Ran Bao, Guoshan Wang
HEAT TRANSFER ENHANCEMENT IN THE SHELL SIDE OF THE SELF-SUPPORT IN RECTANGULAR CONVERGING−DIVERGING TUBE BUNDLE HEAT EXCHANGERS WITH DIFFERENT INSERTS
Heat Transfer Research, Vol.43, 2012, issue 7
Xianhe Deng, Feng Jiao
Heat Transfer Enhancement of Free Surface MHD-Flow by a Dimpled Wall
Journal of Enhanced Heat Transfer, Vol.16, 2009, issue 4
Bo Li, Hulin Huang
HEAT TRANSFER ENHANCEMENT OF FINNED OVAL TUBES WITH PUNCHED WING-TYPE LONGITUDINAL VORTEX GENERATORS
International Heat Transfer Conference 11, Vol.13, 1998, issue
Martin Fiebig, Y. Chen, N.K. Mitra
A REVIEW ON FLOW VISUALIZATION AND TRANSPORT PHENOMENA OVER A SLOT-PERFORATED FLAT SURFACE BETWEEN TWO PARALLEL PLATES
Journal of Flow Visualization and Image Processing, Vol.24, 2017, issue 1-4
Wen-Jei Yang, Shuichi Torii, Shinzaburo Umeda