The implementation of synthetic jets for use in the cooling of electronics is a relatively new technology. It is well established that effective rates of cooling can be achieved using conventional steady flow impinging jets. However it has been shown that synthetic jets can deliver similar cooling effects without the need for an air supply system and therefore represent an extremely promising alternative for thermal management applications. A study has been undertaken of the heat transfer distribution to an impinging synthetic jet flow. The jet is directed at a heated copper plate, which approximates a uniform wall temperature. Nusselt number profiles generated by the synthetic jet for various Reynolds numbers and heights above the plate were obtained. Time varying velocity measurements were also carried out to provide information about the flow characteristics of the synthetic jet and to aid with evaluation of the heat transfer data. For continuous jets mean heat transfer distributions have been shown to have a direct relation to jet velocity profiles, however, for synthetic jets fluctuations in local heat flux illustrate a significant dependence on the driving frequency.
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ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference
July 8–12, 2007
Vancouver, British Columbia, Canada
Conference Sponsors:
- Heat Transfer Division
ISBN:
0-7918-4275-4
PROCEEDINGS PAPER
Heat Transfer Measurements of Impinging Synthetic Air Jet
Alan McGuinn,
Alan McGuinn
University of Dublin, Dublin, Ireland
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Tadhg S. O’Donovan,
Tadhg S. O’Donovan
University of Dublin, Dublin, Ireland
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Darina B. Murray
Darina B. Murray
University of Dublin, Dublin, Ireland
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Alan McGuinn
University of Dublin, Dublin, Ireland
Tadhg S. O’Donovan
University of Dublin, Dublin, Ireland
Darina B. Murray
University of Dublin, Dublin, Ireland
Paper No:
HT2007-32784, pp. 681-689; 9 pages
Published Online:
August 24, 2009
Citation
McGuinn, A, O’Donovan, TS, & Murray, DB. "Heat Transfer Measurements of Impinging Synthetic Air Jet." Proceedings of the ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference. ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference, Volume 2. Vancouver, British Columbia, Canada. July 8–12, 2007. pp. 681-689. ASME. https://doi.org/10.1115/HT2007-32784
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