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Power spectrum of fluctuation for ultrasonic cavitation process in glycerin

Power spectrum of fluctuation for ultrasonic cavitation process in glycerin Abstract Experiments were carried out on ultrasonic cavitation in glycerin. The zone near the emitter has a structure from interacting gas-vapor bubbles; this structure takes the form of fractal clusters. The photometry of passed laser emission was the tool for studying dynamics of fluctuations. In transitive mode, the power spectrum of fluctuation varies by the law inversely proportional to frequency. Distributions of local fluctuations are different from Gaussian and exhibit the property of scale invariance. The qualitative behavior of the frequency dependence of the spectral fluctuation density was tested while varying the power of the ultrasonic emitter. It was demonstrated that the growth of the high-frequency margin of flicker-type behavior evidences for growing instability and can be considered as a forerunner of possible large-scale outbursts. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Thermophysics and Aeromechanics Springer Journals

Power spectrum of fluctuation for ultrasonic cavitation process in glycerin

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Publisher
Springer Journals
Copyright
2007 V.N. Skokov, V.P. Koverda, A.V. Reshetnikov, and A.V. Vinogradov
ISSN
0869-8643
eISSN
1531-8699
DOI
10.1134/S0869864307010064
Publisher site
See Article on Publisher Site

Abstract

Abstract Experiments were carried out on ultrasonic cavitation in glycerin. The zone near the emitter has a structure from interacting gas-vapor bubbles; this structure takes the form of fractal clusters. The photometry of passed laser emission was the tool for studying dynamics of fluctuations. In transitive mode, the power spectrum of fluctuation varies by the law inversely proportional to frequency. Distributions of local fluctuations are different from Gaussian and exhibit the property of scale invariance. The qualitative behavior of the frequency dependence of the spectral fluctuation density was tested while varying the power of the ultrasonic emitter. It was demonstrated that the growth of the high-frequency margin of flicker-type behavior evidences for growing instability and can be considered as a forerunner of possible large-scale outbursts.

Journal

Thermophysics and AeromechanicsSpringer Journals

Published: Mar 1, 2007

References