Microfluid devices are conventionally used for boundary layer control in many aerospace applications. Synthetic jets are intense small-scale turbulent jets formed from periodic entrainment and expulsion of the fluid in which they are embedded. The jets can be made to impinge upon electronic components thereby providing forced convection impingement cooling. The small size of these devices accompanied by the high exit air velocity provides an exciting opportunity to significantly reduce the size of thermal management hardware in electronics. A proprietary meso scale synthetic jet designed at GE Global Research is able to provide a maximum air velocity of from a 0.85 mm hydraulic diameter rectangular orifice. An experimental study for determining the cooling performance of synthetic jets was carried out by using a single jet to cool a thin foil heater. The heat transfer augmentation caused by the jets depends on several parameters, such as, driving frequency, driving voltage, jet axial distance, heater size, and heat flux. During the experiments, the operating frequency for the jets was varied between 3.4 and 5.4 kHz, while the driving voltage was varied between 50 and . Two different heater powers, corresponding to approximately 50 and 80 °C, were tested. A square heater with a surface area of was used to mimic the hot component and detailed temperature measurements were obtained with a microscopic infrared thermal imaging technique. A maximum heat transfer enhancement of approximately 10 times over natural convection was measured. The maximum measured coefficient of performance was approximately 3.25 due to the low power consumption of the synthetic jets.
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December 2005
Research Papers
Meso Scale Pulsating Jets for Electronics Cooling
Jivtesh Garg,
Jivtesh Garg
GE Global Research Center
, Thermal Systems Laboratory, Niskayuna, NY 12309
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Mehmet Arik,
Mehmet Arik
GE Global Research Center
, Thermal Systems Laboratory, Niskayuna, NY 12309
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Stanton Weaver,
Stanton Weaver
GE Global Research Center
, Micro and Nano Structures Technology Lab, Niskayuna, NY 12309
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Todd Wetzel,
Todd Wetzel
GE Global Research Center
, Thermal Systems Laboratory, Niskayuna, NY 12309
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Seyed Saddoughi
Seyed Saddoughi
GE Global Research Center
, Propulsion Technologies Laboratory, Niskayuna, NY 12309
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Jivtesh Garg
GE Global Research Center
, Thermal Systems Laboratory, Niskayuna, NY 12309
Mehmet Arik
GE Global Research Center
, Thermal Systems Laboratory, Niskayuna, NY 12309
Stanton Weaver
GE Global Research Center
, Micro and Nano Structures Technology Lab, Niskayuna, NY 12309
Todd Wetzel
GE Global Research Center
, Thermal Systems Laboratory, Niskayuna, NY 12309
Seyed Saddoughi
GE Global Research Center
, Propulsion Technologies Laboratory, Niskayuna, NY 12309J. Electron. Packag. Dec 2005, 127(4): 503-511 (9 pages)
Published Online: April 20, 2005
Article history
Received:
October 11, 2004
Revised:
April 20, 2005
Citation
Garg, J., Arik, M., Weaver, S., Wetzel, T., and Saddoughi, S. (April 20, 2005). "Meso Scale Pulsating Jets for Electronics Cooling." ASME. J. Electron. Packag. December 2005; 127(4): 503–511. https://doi.org/10.1115/1.2065727
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