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Applications of Defocusing DPIV to Bubbly Flow Measurement

Jeon, David and Pereira, Francisco and Gharib, Morteza (2003) Applications of Defocusing DPIV to Bubbly Flow Measurement. Particle and Particle Systems Characterization, 20 (3). pp. 193-198. ISSN 0934-0866. doi:10.1002/ppsc.200390025.

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Defocusing digital particle image velocimetry (DDPIV) was used to investigate a bubbly flow in the wake of a hydrofoil. DDPIV is a three component volumetric velocimetry technique that operates at full video rate. Complex, three-dimensional, and time-dependent flows can be measured. To measure the bubble sizes, an extension to DDPIV was made to infer bubble sizes from their intensities. Both bubble size distributions and bubble velocity fields were simultaneously measured. Results indicate that DDPIV can reliably measure bubble sizes in the range of 100 microns, as well as resolving their aggregate motion.

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Additional Information:© 2003 Wiley-VCH Verlag GmbH&Co. KGaA, Weinheim. Received: 31 October 2002; accepted: 8 May 2003. Article first published online: 31 Jul. 2003. Special thanks to the Office of Naval Research (grant number N00014-97-1-0303) for the ongoing support of this project. The authors would also like to thank Professor Lasheras and his group for not only loaning us their bubble generator, but also for coming to Caltech to help us install it in our facility. The defocusing technique is protected by US Patent number 6278847.
Funding AgencyGrant Number
Office of Naval Research (ONR)N00014-97-1-0303
Subject Keywords:bubbles, sizing, three-dimensional, velocimetry
Issue or Number:3
Record Number:CaltechAUTHORS:20130911-085444560
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Official Citation:Jeon, D., Pereira, F. and Gharib, M. (2003), Applications of Defocusing DPIV to Bubbly Flow Measurement. Part. Part. Syst. Charact., 20: 193–198. doi: 10.1002/ppsc.200390025
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:41234
Deposited By: Tony Diaz
Deposited On:11 Sep 2013 22:10
Last Modified:10 Nov 2021 04:27

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