Microchannels and minichannels have been shown to have many potential applications for cooling high-heat-flux electronics over the past 3 decades. Synthetic jets can enhance minichannel performance by adding net momentum flux into a stream without adding mass flux. These jets are produced because of different flow patterns that emerge during the induction and expulsion stroke of a diaphragm, and when incorporated into minichannels can disrupt boundary layers and impinge on the far wall, leading to high heat transfer coefficients. Many researchers have examined the effects of synthetic jets in microchannels and minichannels with single-phase flows. The use of synthetic jets has been shown to augment local heat transfer coefficients by 2–3 times the value of steady flow conditions. In this investigation, local heat transfer coefficients and pressure loss in various operating regimes were experimentally measured. Experiments were conducted with a minichannel array containing embedded thermocouples to directly measure local wall temperatures. The experimental range extends from transitional to turbulent flows. Local wall temperature measurements indicate that increases of heat transfer coefficient of over 20% can occur directly below the synthetic jet with low exit qualities. In this study, the heat transfer augmentation by using synthetic jets was dictated by the momentum ratio of the synthetic jet to the bulk fluid flow. As local quality was increased, the heat transfer augmentation dropped from 23% to 10%. Surface tension variations had a large effect on the Nusselt number, while variations in inertial forces had a small effect on Nusselt number in this operating region.
Skip Nav Destination
ASME 2013 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems
July 16–18, 2013
Burlingame, California, USA
Conference Sponsors:
- Electronic and Photonic Packaging Division
ISBN:
978-0-7918-5576-8
PROCEEDINGS PAPER
Experimental Investigation of the Effect of Synthetic Jets in Minichannels With Subcooled Boiling Flow
David M. Sykes,
David M. Sykes
Mainstream Engineering Corporation, Rockledge, FL
Search for other works by this author on:
Andrew L. Carpenter,
Andrew L. Carpenter
Mainstream Engineering Corporation, Rockledge, FL
Search for other works by this author on:
Gregory S. Cole
Gregory S. Cole
Mainstream Engineering Corporation, Rockledge, FL
Search for other works by this author on:
David M. Sykes
Mainstream Engineering Corporation, Rockledge, FL
Andrew L. Carpenter
Mainstream Engineering Corporation, Rockledge, FL
Gregory S. Cole
Mainstream Engineering Corporation, Rockledge, FL
Paper No:
IPACK2013-73204, V002T08A044; 8 pages
Published Online:
January 20, 2014
Citation
Sykes, DM, Carpenter, AL, & Cole, GS. "Experimental Investigation of the Effect of Synthetic Jets in Minichannels With Subcooled Boiling Flow." Proceedings of the ASME 2013 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. Volume 2: Thermal Management; Data Centers and Energy Efficient Electronic Systems. Burlingame, California, USA. July 16–18, 2013. V002T08A044. ASME. https://doi.org/10.1115/IPACK2013-73204
Download citation file:
10
Views
Related Proceedings Papers
Related Articles
A Detailed Analysis of Film Cooling Physics: Part III— Streamwise Injection With Shaped Holes
J. Turbomach (January,2000)
High-Flux Thermal Management With Supercritical Fluids
J. Heat Transfer (December,2016)
Single-Phase and Two-Phase Hybrid Cooling Schemes for High-Heat-Flux Thermal Management of Defense Electronics
J. Electron. Packag (June,2009)
Related Chapters
Laminar Fluid Flow and Heat Transfer
Applications of Mathematical Heat Transfer and Fluid Flow Models in Engineering and Medicine
Design and Application of Prestress Drill-Grouted Diaphragm Wall in the Foundation Pit Bracing
Geological Engineering: Proceedings of the 1 st International Conference (ICGE 2007)
Thermal Design Guide of Liquid Cooled Systems
Thermal Design of Liquid Cooled Microelectronic Equipment