Abonnement à la biblothèque: Guest
Portail numérique Bibliothèque numérique eBooks Revues Références et comptes rendus Collections
Journal of Enhanced Heat Transfer
Facteur d'impact: 0.562 Facteur d'impact sur 5 ans: 0.605 SJR: 0.211 SNIP: 0.361 CiteScore™: 0.33

ISSN Imprimer: 1065-5131
ISSN En ligne: 1026-5511

Volumes:
Volume 26, 2019 Volume 25, 2018 Volume 24, 2017 Volume 23, 2016 Volume 22, 2015 Volume 21, 2014 Volume 20, 2013 Volume 19, 2012 Volume 18, 2011 Volume 17, 2010 Volume 16, 2009 Volume 15, 2008 Volume 14, 2007 Volume 13, 2006 Volume 12, 2005 Volume 11, 2004 Volume 10, 2003 Volume 9, 2002 Volume 8, 2001 Volume 7, 2000 Volume 6, 1999 Volume 5, 1998 Volume 4, 1997 Volume 3, 1996 Volume 2, 1995 Volume 1, 1994

Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.2014011337
pages 427-441

EXPERIMENTAL AND NUMERICAL STUDY OF HEAT TRANSFER OVER A FINNED ELLIPTICAL FLAT TUBE FITTED WITH LONGITUDINAL VORTEX GENERATORS ON THE RECTANGULAR FIN SURFACE

Li Li
MOE Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Beijing 102206, China
Xiaoze Du
Key Laboratory of Condition Monitoring and Control for Power Plant Equipment (North China Electric Power University), Ministry of Education, Beijing 102206, China; School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China
Yuwen Zhang
University of Missouri, Columbia, MO 65201, USA
Chao Xu
MOE Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Beijing 102206, China
Lijun Yang
MOE Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Beijing 102206, China
Yongping Yang
MOE Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Beijing 102206, China

RÉSUMÉ

An experimental study of heat transfer over a finned elliptical flat tube fitted with and without longitudinal vortex generators (LVGs) mounted on the rectangular fins was carried out in a wind channel. Numerical simulation was performed to compare the experimental results and to verify the turbulence model. The test models were magnified four times greater than the original react model and correspondingly simplified according to the principle of similitude. Several fins were designed to construct the periodic boundary condition. Thermo couples were used to measure the temperatures on the fins and tube of the flow and surfaces. The experimental results showed that in the low Reynolds number regime, the heat transfer decreased continually from the entrance along the stream wise direction. However, in the high Reynolds number regime, the heat transfer had a maximum value in the middle points of the fins along the stream wise direction. It was demonstrated through the numerical simulation and experimental results that the configuration of the fin and tube with the LVGs on the fins could attain enhanced heat transfer without too much pressure drop.


Articles with similar content:

FLOW AND HEAT TRANSFER CHARACTERISTICS OF A FIN-AND-TUBE HEAT EXCHANGER WITH WAVY RIB INSERTS
Journal of Enhanced Heat Transfer, Vol.23, 2016, issue 6
Yongping Yang, Xiaoze Du, Li Li, Lijun Yang, Gaosheng Wei
HEAT TRANSFER INSIDE A TUBE WITH A NOVEL PROMOTER
International Heat Transfer Conference 6, Vol.2, 1978, issue
Saburo Maezawa, G. S. H. Lock
The Influence of the Fin Type and Base Tube Diameter of Serrated and Solid-Fin Tubes on the Heat Transfer and Pressure Drop Performance
International Heat Transfer Conference 15, Vol.23, 2014, issue
Erling Naess, Anna Holfeld
Heat Transfer and Pressure Drop of Serrated Finned Tube Banks in Forced Convection
International Heat Transfer Conference 15, Vol.9, 2014, issue
Hiroyuki Nakaharai, Akira Yamada, Seiji Goto, Manabu Oda
NUMERICAL SIMULATION ON TURBULENT FLUID FLOW AND HEAT TRANSFER ENHANCEMENT OF A TUBE BANK FIN HEAT EXCHANGER WITH MOUNTED VORTEX GENERATORS ON THE FINS
Journal of Enhanced Heat Transfer, Vol.18, 2011, issue 5
Wan-Ling Hu, Liang-Bi Wang, Yong-Heng Zhang