Heat transfer measurements of impinging synthetic air jet

Alan McGuinn, Tadhg S. O'Donovan, Darina B. Murray

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publication Proceedings of the ASME/JSME Thermal Engineering Summer Heat Transfer Conference
Place of PublicationNew York
PublisherAmerican Society of Mechanical Engineers
Pages681-689
Number of pages9
ISBN (Print)978-0-7918-4275-1
Publication statusPublished - 2007
Event7th ASME/JSME Thermal Engineering and Summer Heat Transfer Conference - Vancouver
Duration: 8 Jul 200712 Jul 2007

Conference

Conference7th ASME/JSME Thermal Engineering and Summer Heat Transfer Conference
CityVancouver
Period8/07/0712/07/07

Cite this

McGuinn, A., O'Donovan, T. S., & Murray, D. B. (2007). Heat transfer measurements of impinging synthetic air jet. In Proceedings of the ASME/JSME Thermal Engineering Summer Heat Transfer Conference (pp. 681-689). American Society of Mechanical Engineers.