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Annular synthetic jet used for impinging flow mass-transfer

Trávnícek, Z. and Tesar, V. (2003) Annular synthetic jet used for impinging flow mass-transfer. International Journal of Heat and Mass Transfer, 46 (17). pp. 3291-3297. ISSN 0017-9310


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An annular synthetic jet was investigated experimentally, both with and without an opposing impingement wall. The experiments involved smoke visualization and mass transfer measurement on the wall by means of naphthalene sublimation technique. Two qualitatively different flow field patterns were identified, depending upon the driving amplitude level. With small amplitudes, vortical puffs maintain their identity for a relatively long time. If the amplitudes are large, breakdown and coalescence of the vortical train is much faster. Also the resultant mass transfer to the impingement wall is then much higher. Furthermore, a fundamental change of the whole flow field was observed at the high end of the investigated frequency range, associated with radical reduction of the size of the recirculation bubble.

Item Type: Article
Copyright, Publisher and Additional Information: Copyright © 2003 Elsevier Science Ltd. This is an author produced version of an article published in International Journal of Heat and Mass Transfer.
Institution: The University of Sheffield
Academic Units: The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Chemical and Biological Engineering (Sheffield)
Depositing User: Vaclav Tesar
Date Deposited: 01 Jun 2005
Last Modified: 20 Dec 2015 08:18
Published Version: http://www.sciencedirect.com/science/journal/00179...
Status: Published
Refereed: Yes
Identification Number: 10.1016/S0017-9310(03)00119-4
URI: http://eprints.whiterose.ac.uk/id/eprint/507

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