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 0017-9310Full text available as:
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.
|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 Process Engineering (Sheffield)|
|Depositing User:||Vaclav Tesar|
|Date Deposited:||01 Jun 2005|
|Last Modified:||04 Jun 2014 21:18|