Results 151 to 160 of about 32,614 (207)
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Spectral characteristics of acoustic cavitation
Ultrasonics, 1989This paper reports on theoretical research into the dynamics, acoustic noise and noise spectrum of a single cavitation bubble affected by non-gradiental acoustic fields. It is shown that all the characteristic features of experimental acoustic cavitation spectra occur in the spectrum of a single bubble.
V I, Ilyichev +2 more
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Energy Analysis in Acoustic Cavitation
Industrial & Engineering Chemistry Research, 2000In sonochemical processes, the physical and chemical effects are attributed to the phenomenon of cavitation, which is the formation, growth, and collapse of the cavities termed as activity of cavities. Energy analysis of a single cavity has been considered in order to explain, qualitatively, the effects of acoustic parameters such as intensity and ...
Vichare, N.P. +4 more
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Self-sensing cavitation detection in ultrasound-induced acoustic cavitation
Ultrasonics, 2019The generation of cavitation by ultrasound is used in a large number of processes in different scientific and industrial applications. Chemical reactions are made possible or accelerated by locally occurring high temperatures and pressures generated by the collapse of cavitation bubbles.
Kai-Alexander, Saalbach +2 more
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Acoustic cavitation and implosion acoustics
The Journal of the Acoustical Society of America, 1996The ubiquitous cavitation bubble always seems to be around whenever one propagates an acoustic field of moderate amplitude through a liquid. The implosive collapse is a marvelously efficient concentrator of acoustic energy and can result in exotic mechanical and chemical effects. Examples of some of the many ways this acoustic energy can be utilized to
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The Journal of the Acoustical Society of America, 2003
Acoustic cavitation is a phenomenon that occurs on microsecond time scales and micron length scales, yet, it has many macroscopic manifestations. Accordingly, it is often difficult, at least for the author, to form realistic physical descriptions of the specific mechanisms through which it expresses itself in our macroscopic world.
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Acoustic cavitation is a phenomenon that occurs on microsecond time scales and micron length scales, yet, it has many macroscopic manifestations. Accordingly, it is often difficult, at least for the author, to form realistic physical descriptions of the specific mechanisms through which it expresses itself in our macroscopic world.
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Acoustic cavitation prediction
The Journal of the Acoustical Society of America, 1978We have derived an approximate expression for the threshold pressure for transient acoustic cavitation and have used this result with published expressions for the thresholds for gas bubble nucleation and for rectified diffusion in synthesizing cavitation prediction charts for water covering a frequency range from 10 kHz to 2.5 MHz, and for gas ...
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Ultrasonics, 1984
Abstract This article presents a selective review of the subject of acoustic cavitation inception. Topics covered include cavitation threshold measurements, the role of dirt or pre-existing bubble nuclei in cavitation inception, radiation-induced acoustic cavitation, and a discussion of some unsolved problems such as cavitation thresholds in liquid ...
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Abstract This article presents a selective review of the subject of acoustic cavitation inception. Topics covered include cavitation threshold measurements, the role of dirt or pre-existing bubble nuclei in cavitation inception, radiation-induced acoustic cavitation, and a discussion of some unsolved problems such as cavitation thresholds in liquid ...
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The Journal of the Acoustical Society of America, 1983
Abstract : The primary thrust of this study was toward a more complete understanding of general aspects of acoustic cavitation. The effect of long- chain polymer additives on the cavitation threshold was investigated to determine if they reduced the acoustic cavitation threshold in a similar manner to the observed reduction in the cavitation index in ...
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Abstract : The primary thrust of this study was toward a more complete understanding of general aspects of acoustic cavitation. The effect of long- chain polymer additives on the cavitation threshold was investigated to determine if they reduced the acoustic cavitation threshold in a similar manner to the observed reduction in the cavitation index in ...
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Acoustic cavitation noise spectra
Applied Scientific Research, 1982Experiments are described which allow to measure and visualize the dynamics of the total acoustic cavitation noise spectrum. A distinct threshold for broad-band noise much higher than the threshold for the first subharmonic has been found. At this noise threshold a broadening of all spectral lines is observed.
E. Cramer, W. Lauterborn
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Reactor with acoustic cavitation
The Journal of the Acoustical Society of America, 2002The invention concerns a reactor with acoustic cavitation comprising a tube (10) made of flexible material, wherein the liquid to be treated circulates. Electro-acoustic transducers (1) are radially and uniformly distributed around the tube (10). Each electro-acoustic transducer (1) has a general prismatic shape with a base of specific width and a head
Jean-Luc Dion, Kodjo Agbossou
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