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TECHNICAL PAPERS

Scaling Effect on Prediction of Cavitation Inception in a Line Vortex Flow

[+] Author and Article Information
Chao-Tsung Hsiao, Georges L. Chahine

Dynaflow, Inc., 10621-J Iron Bridge Road, Jessup, MD 20794e-mail: info@dynaflow-inc.com

Han-Lieh Liu

U.S. Patent and Trademark Office, Crystal Plaza 3, Room 2C02, Washington, DC 20231

J. Fluids Eng 125(1), 53-60 (Jan 22, 2003) (8 pages) doi:10.1115/1.1521956 History: Received May 18, 2001; Revised July 01, 2002; Online January 22, 2003
Copyright © 2003 by ASME
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References

Figures

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Bubble radius versus time at different cavitation number obtained by the classical Rayleigh-Plesset equation for the small scale with R0=50 μm
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Bubble radius and acoustic pressure versus time obtained by the modified SAP Rayleigh-Plesset equation for the small scale with R0=50 μm at σ=4.471
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Maximum SPL and bubble radius versus cavitation number for the medium scale test in the constant vortex core case
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Diffusion of the vortex core through increase of its radius along the longitudinal direction
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Bubble radius and resulting acoustic pressure versus time for the small scale with R0=50 μm at σ=4.471 in a diffusive line vortex
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Bubble radius and resulting acoustic pressure versus time for the small scale with R0=50 μm at σ=4.471 in a diffusive line vortex when the slip velocity effect is neglected
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Bubble radius and resulting acoustic pressure versus time for the small scale with R0=100 and 200 μm at σ=4.471 in a diffusive line vortex
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Maximum SPL and bubble radius versus cavitation number for small and medium scales in the diffusive vortex core case
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The normalized curves of the ratio of maximum radius versus cavitation number for three different scale ratio and three different initial bubble size
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Comparison of the amplitude spectra of the acoustic pressure generated in a constant and a diffusive vortex core for R0=50 μm in the small scale
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Amplitude spectrum for various initial nuclei sizes in the small scale
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Correspondence between acoustic signals and the peak frequencies in the Fourier spectrum for R0=50 μm and σ=4.471 in the small scale
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Wavelet transform and Hilbert transform for R0=50 μm and σ=4.471 in the small scale
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Bubble radius, encounter pressure and frequency obtained using Eq. (16) versus time for R0=50 μm and σ=4.471 in the small scale
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Normalized amplitude spectra for various initial bubble radii in the large scale

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