Cavitation in turbomachinery provides a source of damage to the hydrodynamic surfaces. Detection of cavitation at the earliest possible time after inception is desirable from a damage prevention standpoint. In order to detect cavitation in real time, acoustic sensing of the cavitation events has long been an accepted practice. A problem with this measurement technique is the potential contamination from electrical and acoustic background noise sources. This work employs an algorithm based on wavelet denoising. The wavelet denoising algorithm depends on a measurement of the acoustic background noise in the absence of cavitation. Cavitation measurements of a stationary object are evaluated with and without the application of the denoising process. The results of this comparison indicate that the wavelet denoising procedure allows an increased number of cavitation events to be detected at a given static pressure, and cavitation is detected at higher pressures than previous techniques.
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ASME 2004 Heat Transfer/Fluids Engineering Summer Conference
July 11–15, 2004
Charlotte, North Carolina, USA
Conference Sponsors:
- Heat Transfer Division and Fluids Engineering Division
ISBN:
0-7918-4692-X
PROCEEDINGS PAPER
Cavitation Detection Using Wavelet Denoising
Joseph P. Welz,
Joseph P. Welz
Pennsylvania State University, State College, PA
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Matthew P. Iannacci,
Matthew P. Iannacci
Carnegie Mellon University, Pittsburgh, PA
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David M. Jenkins
David M. Jenkins
Pennsylvania State University, State College, PA
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Joseph P. Welz
Pennsylvania State University, State College, PA
Matthew P. Iannacci
Carnegie Mellon University, Pittsburgh, PA
David M. Jenkins
Pennsylvania State University, State College, PA
Paper No:
HT-FED2004-56804, pp. 831-836; 6 pages
Published Online:
February 24, 2009
Citation
Welz, JP, Iannacci, MP, & Jenkins, DM. "Cavitation Detection Using Wavelet Denoising." Proceedings of the ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. Volume 3. Charlotte, North Carolina, USA. July 11–15, 2004. pp. 831-836. ASME. https://doi.org/10.1115/HT-FED2004-56804
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