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1 / f fluctuations under acoustic cavitation of liquids

Skokov, V.N. ; Koverda, V.P. ; Reshetnikov, A.V. ; Vinogradov, A.V.

Physica A, 2006-05, Vol.364, p.63-69 [Periódico revisado por pares]

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Título:
1 / f fluctuations under acoustic cavitation of liquids
Autor: Skokov, V.N. ; Koverda, V.P. ; Reshetnikov, A.V. ; Vinogradov, A.V.
Assuntos: [formula omitted] fluctuations ; Acoustic cavitation ; Noise ; Nonequilibrium phase transitions ; Power spectra ; Self-organized criticality
É parte de: Physica A, 2006-05, Vol.364, p.63-69
Descrição: A regime of a generation of fluctuations with 1 / f power spectra under cavitation of liquids in an ultrasonic field has been found experimentally. The acoustic cavitation is accompanied by the formation of various spatial structures and scale-invariant distribution functions of fluctuations. It has been shown that local fluctuations can have non-Gaussian distribution. A two-dimensional distributed parameter system of stochastic equations describing interacting nonequilibrium phase transitions has been investigated numerically. It has been shown that the system in a wide range of changing initial conditions and the intensity of external noise is characterized by the 1 / f behavior of power spectra and scale-invariant distribution functions of fluctuations. The results of numerical simulation agree qualitatively with the experimental data.
Editor: Elsevier B.V
Idioma: Inglês

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