Field Measurements of Mean Velocity Characteristics of a Large-Diameter Swirling Jet
Publication: Journal of Hydraulic Engineering
Volume 136, Issue 9
Abstract
Full-scale field acoustic Doppler velocimeter measurements of the radial, axial, and tangential flow components were undertaken in a large-diameter turbulent swirling jet generated by a raft-mounted axial flow-mixing propeller discharging through a draft tube during isothermal and stratified conditions. The results were compared with classical jet theory and showed significant differences in the zone of flow establishment though similar behavior in the zone where established flow was found. It was concluded that the efflux from the axial flow-mixing propeller could not be described adequately by conventional jet theory due to the jet size and swirling characteristics.
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Acknowledgments
The writers would like to thank the Cooperative Research Centre for Water Quality and Treatment for funding project 2.5.1, for which this work forms a part, and in particular we thank Dr. Dennis Steffensen for managing the project. Invaluable assistance was given by fellow researchers during the long hours spent collecting the flow data and our gratitude is given to Dr. Rudi Regel and Mr. Leon Linden for valuable field assistance. Finally, the writers are indebted to the tradesmen that manufactured the equipment that facilitated the collection of this insightful data and our thanks are given to Mr. Gregory Atkins, Mr. Jeffrey Hiorns, and Mr. Steven Huskinson from the University of Adelaide engineering workshop.
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 136 • Issue 9 • September 2010
Pages: 642 - 650
Copyright
© 2010 ASCE.
History
Received: Jun 14, 2007
Accepted: Feb 15, 2010
Published online: Feb 17, 2010
Published in print: Sep 2010
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