The effect of the dimple shape and orientation on the heat transfer coefficient of a vertical fin surface was determined both numerically and experimentally. The investigation focused on the laminar channel flow between fins, with a and 1000. Numerical simulations were performed using a commercial computational fluid dynamics code to analyze optimum configurations, and then an experimental investigation was conducted on flat and dimpled surfaces for comparison purposes. Numerical results indicated that oval dimples with their “long” axis oriented perpendicular to the direction of the flow offered the best thermal improvement, hence the overall Nusselt number increased up to 10.6% for the dimpled surface. Experimental work confirmed these results with a wall-averaged temperature reduction of up to , which depended on the heat load and the Reynolds number. Pressure losses due to the dimple patterning were also briefly explored numerically in this work.
Skip Nav Destination
Article navigation
Research Papers
Optimization of Fin Performance in a Laminar Channel Flow Through Dimpled Surfaces
Carlos Silva,
Carlos Silva
Department of Mechanical Engineering,
Texas A&M University
, 3123 TAMU, College Station, TX 77843-3123
Search for other works by this author on:
Doseo Park,
Doseo Park
Department of Mechanical Engineering,
Texas A&M University
, 3123 TAMU, College Station, TX 77843-3123
Search for other works by this author on:
Egidio (Ed) Marotta,
Egidio (Ed) Marotta
Department of Mechanical Engineering,
Texas A&M University
, 3123 TAMU, College Station, TX 77843-3123
Search for other works by this author on:
Leroy (Skip) Fletcher
Leroy (Skip) Fletcher
Department of Mechanical Engineering,
Texas A&M University
, 3123 TAMU, College Station, TX 77843-3123
Search for other works by this author on:
Carlos Silva
Department of Mechanical Engineering,
Texas A&M University
, 3123 TAMU, College Station, TX 77843-3123
Doseo Park
Department of Mechanical Engineering,
Texas A&M University
, 3123 TAMU, College Station, TX 77843-3123
Egidio (Ed) Marotta
Department of Mechanical Engineering,
Texas A&M University
, 3123 TAMU, College Station, TX 77843-3123
Leroy (Skip) Fletcher
Department of Mechanical Engineering,
Texas A&M University
, 3123 TAMU, College Station, TX 77843-3123J. Heat Transfer. Feb 2009, 131(2): 021702 (9 pages)
Published Online: December 15, 2008
Article history
Received:
December 22, 2007
Revised:
August 14, 2008
Published:
December 15, 2008
Citation
Silva, C., Park, D., Marotta, E. (., and Fletcher, L. (. (December 15, 2008). "Optimization of Fin Performance in a Laminar Channel Flow Through Dimpled Surfaces." ASME. J. Heat Transfer. February 2009; 131(2): 021702. https://doi.org/10.1115/1.2994712
Download citation file:
Get Email Alerts
Cited By
On Prof. Roop Mahajan's 80th Birthday
J. Heat Mass Transfer
Thermal Hydraulic Performance and Characteristics of a Microchannel Heat Exchanger: Experimental and Numerical Investigations
J. Heat Mass Transfer (February 2025)
Related Articles
An Efficient Localized Radial Basis Function Meshless Method for Fluid Flow and Conjugate Heat Transfer
J. Heat Transfer (February,2007)
Numerical and Experimental Investigation of Laminar Channel Flow With a Transparent Wall
J. Heat Transfer (June,2011)
Simulation of Thermal Fluid Flow Transport in a Channel Containing Slot-Perforated Flat Plates
J. Heat Transfer (November,2008)
Extended Results for Fully Developed Laminar Forced Convection Heat Transfer in Trapezoidal Channels of Plate-Fin Exchangers
J. Thermal Sci. Eng. Appl (December,2010)
Related Proceedings Papers
Related Chapters
The Design and Implement of Remote Inclinometer for Power Towers Based on MXA2500G/GSM
International Conference on Mechanical and Electrical Technology, 3rd, (ICMET-China 2011), Volumes 1–3
Completing the Picture
Air Engines: The History, Science, and Reality of the Perfect Engine
The Special Characteristics of Closed-Cycle Gas Turbines
Closed-Cycle Gas Turbines: Operating Experience and Future Potential