The numerical study proposed is to investigate the effectiveness of delta-winglet vortex generators (VGs) used for heat-transfer enhancement in a horizontal rectangular channel as a typical air passage for fin-and-tube heat exchangers. The effects of four different configurations of vortex generators have been investigated: (1) single pair VGs with a 30 degree attack angle; (2) 2-pair VG array with a 30 degree attack angle; (3) single pair VGs with a 45 attack angle; (4) 2-pair VG array with a 45 attack angle. The numerical results indicate that average Nusselt number increase is 31%–38% and 51%–71% for the channel mounted with VGs with a 30 degree attack angle and a 45 degree attack angle, respectively. The enhancement for single large pair of VGs is higher than that for a V-formation array with 2 small pairs. However, VGs also introduce extra pressure drop penalties to the channel flow, and higher heat-transfer performance is also accompanied by a larger pressure drop penalty. According to the results, a single large pair of VGs with 45 attack angle shows the best overall performance among all the configurations investigated.
Skip Nav Destination
Close
Sign In or Register for Account
ASME 2011 International Mechanical Engineering Congress and Exposition
November 11–17, 2011
Denver, Colorado, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-5496-9
PROCEEDINGS PAPER
A Numerical Study of Air-Side Heat Transfer Enhancement Using V-Formation Delta-Winglet Vortex Generators in Heat Exchangers
Junling Xie
,
Junling Xie
Lawrence Technological University, Southfield, MI
Search for other works by this author on:
Liping Liu
Liping Liu
Lawrence Technological University, Southfield, MI
Search for other works by this author on:
Junling Xie
Lawrence Technological University, Southfield, MI
Liping Liu
Lawrence Technological University, Southfield, MI
Paper No:
IMECE2011-65862, pp. 81-88; 8 pages
Published Online:
August 1, 2012
Citation
Xie, J, & Liu, L. "A Numerical Study of Air-Side Heat Transfer Enhancement Using V-Formation Delta-Winglet Vortex Generators in Heat Exchangers." Proceedings of the ASME 2011 International Mechanical Engineering Congress and Exposition. Volume 10: Heat and Mass Transport Processes, Parts A and B. Denver, Colorado, USA. November 11–17, 2011. pp. 81-88. ASME. https://doi.org/10.1115/IMECE2011-65862
Download citation file:
- Ris (Zotero)
- Reference Manager
- EasyBib
- Bookends
- Mendeley
- Papers
- EndNote
- RefWorks
- BibTex
- ProCite
- Medlars
Close
Sign In
5
Views
0
Citations
Related Proceedings Papers
Related Articles
Local and Average Characteristics of Heat/Mass Transfer Over Flat Tube Bank Fin With Four Vortex Generators per Tube
J. Heat Transfer (June,2002)
Comparison of Wing-Type Vortex Generators for Heat Transfer Enhancement in Channel Flows
J. Heat Transfer (November,1994)
Related Chapters
Heat Transfer and Pressure Drop Correlations for Compact Heat Exchangers with Multi-Region Louver Fins
Inaugural US-EU-China Thermophysics Conference-Renewable Energy 2009 (UECTC 2009 Proceedings)
Threshold Functions
Closed-Cycle Gas Turbines: Operating Experience and Future Potential
Introduction
Heat Transfer & Hydraulic Resistance at Supercritical Pressures in Power Engineering Applications