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1

Energy Analysis of Cavitation Bubbles Under Dual-Frequency Acoustic Excitation

Lv Liang, Hu Kai, Liu Fei, Li Yawei, Cui Bing

Archives of Acoustics

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2022

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Vol. 47, No. 4

513--518

EN

Cavitation has been widely used in wastewater degradation, material synthesis and biomedical field under dual-frequency acoustic excitation. The applications of cavitation are closely related to the power (i.e. the rate of internal energy accumulation) during bubble collapse. The Keller–Miksis equation considering liquid viscosity, surface tension and liquid compressibility is used to describe the radial motion of the bubble. The model is built in predicting the power during bubble collapse under dual-frequency acoustic excitation. The influences of parameters (i.e. phase difference, frequency difference, and amplitude ratio) on the power are investigated numerically. With the increase of phase difference, the power can be fluctuated in a wide range at all conditions. Three typical characteristics of the power appear under the effects of frequency difference and amplitude ratio. With the increase of amplitude ratio, if the frequency difference is small, the power has two maximum values; and if the frequency difference is medium, there is a maximum value. Otherwise, the power monotonously decreases. The results can provide theoretical references for the selections of experimental parameters of sonoluminescence and sonochemistry in the dual-frequency acoustic field.

2

Zjawiska optyczno-akustyczne w diagnostyce olejów izolacyjnych

Szmechta M., Zmarzły D., Boczar T.

Wiadomości Elektrotechniczne

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2008

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R. 76, nr 1

48-51

PL

Przedstawiono możliwości wykorzystania zjawiska sonoluminescencji do diagnostyki właściwości starzeniowych olejów izolacyjnych, umożliwiającej ocenę czasu pracy transformatora energetycznego.

EN

The paper presents possibility of utilization of sonoluminescence phenomenon in diagnostics of ageing characteristics of insulating oils that enables assessment of power transformer running time.

3

Diagnostyka olejów izolacyjnych z wykorzystaniem zjawisk optyczno-akustycznych

Szmechta M.

Zeszyty Naukowe. Elektryka / Politechnika Opolska

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2007

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Vol. 322, z. 59

41-42

EN

The light intensity and emitted light spectra of sonoluminescence depends mainly on the fluid and dissolved gases properties. These features indicate the possibility of estimating the amount of dissolved chemical compounds in liquids. The use of sonoluminescence for aging properties diagnostic of insulation oils was proposed.

4

Investigation of multi-bubble sonoluminescence light intensity in water

Boczar T., Zmarzły D., Szmechta M.

Molecular and Quantum Acoustics

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2007

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Vol. 28

39-46

EN

Sonoluminescence is a process by which light is emitted from collapsing ultrasound-driven gas bubbles in a liquid. The light intensity and emitted light spectra depends mainly on the fluid and dissolved gases properties. These features indicate the possibility of estimating the amount of dissolved chemical compounds in liquids. The objective of this work is to point out the possibility of using sonoluminescence phenomenon as a diagnostic tool for insulation fluid diagnostic. The main task of this work is to build and present the key features of an experimental apparatus needed for obtaining broadband multi-bubble sonoluminescence intensity dependencies on voltage and frequency in fluids.

5

Sonoluminescencja w sensoryce

Kopystecki E., Ładyński M.

Elektronika : konstrukcje, technologie, zastosowania

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2004

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Vol. 45, nr 1

45-48

PL

Sonoluminescencja jednego pęcherzyka (SBLS) polega na emisji światła z uwięzionego pod wpływem fali akustycznej pęcherzyka. Natężenie światła silnie zależy od: temperatury, ciśnienia atmosferycznego, grawitacji itd. Sugerujemy, iż te właściwości pozwolą w przyszłości na budowę nowych typów czujników.

EN

Single-bubble sonoluminescence (SBSL) refers to the emission of light from an acoustically trapped bubble. The intensity of the emitted light strongly depends from: ambient pressure, temperature, gravity etc. We suggest that these properties, in the future, can be used to build of new kind of sensors.

6

Sonoluminescence of water and biological liquids

Chernov V., Selivanovsky D.

Hydroacoustics

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2003

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Vol. 6

113--116

EN

In this work the results of experimental research of the sonoluminescence of water and biological liquid (plasma of blood) at different temperatures are described. The studied blood plasma was taken from normal and pathological patients. Sonoluminescence of water was found to decrease with a decrease in temperature. Samples of normal blood plasma produce sonoluminescence with approximately constant intensity at cooling. In contrast, sonoluminescence of pathological blood plasma increases with decreasing temperature. These results can be useful for investigations of the nature of sonoluminescence as well as for medical diagnostics.