A detailed study of ventilated supercavitation in the reentrant jet regime is being carried out in the high-speed water tunnel at St. Anthony Falls Laboratory, as the hydrodynamics part of an interdisciplinary study on stability and control of high-speed cavity-running bodies. It is aimed at understanding the interaction between a ventilated supercavity and its turbulent bubbly wake, with the goal to provide the information needed for the development of control algorithms. Here Particle Image Velocimetry (PIV) measurements in high void fraction bubbly wakes created by the collapse of ventilated supercavities are reported. Bubble velocity fields are obtained, and shown to submit to the same high Reynolds number similarity scaling as the single-phase turbulent axisymmetric wake. A grayscale technique to measure local average void fraction is outlined. Initial results of a time-resolved PIV experiment (2000 Hz) are also presented.
ASME 2005 Fluids Engineering Division Summer Meeting
June 19–23, 2005
Houston, Texas, USA
Conference Sponsors:
- Fluids Engineering Division
ISBN:
0-7918-4199-5
PROCEEDINGS PAPER
Measurements in High Void-Fraction Bubbly Wakes Created by Ventilated Supercavitation
Martin Wosnik
,
Martin Wosnik
University of Minnesota, Minneapolis, MN
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Lucas Gomez Fontecha
,
Lucas Gomez Fontecha
Chalmers University of Technology, Gothenburg, Sweden
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Roger E. A. Arndt
Roger E. A. Arndt
University of Minnesota, Minneapolis, MN
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Author Information
Martin Wosnik
University of Minnesota, Minneapolis, MN
Lucas Gomez Fontecha
Chalmers University of Technology, Gothenburg, Sweden
Roger E. A. Arndt
University of Minnesota, Minneapolis, MN
Paper No:
FEDSM2005-77200, pp. 531-538; 8 pages
Published Online:
October 13, 2008
Citation
Wosnik, Martin, Fontecha, Lucas Gomez, and Arndt, Roger E. A. "Measurements in High Void-Fraction Bubbly Wakes Created by Ventilated Supercavitation." Proceedings of the ASME 2005 Fluids Engineering Division Summer Meeting. Volume 2: Fora. Houston, Texas, USA. June 19–23, 2005. pp. 531-538. ASME. https://doi.org/10.1115/FEDSM2005-77200
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