Results 81 to 90 of about 32,614 (207)
Some Current Advances in Cavitation Research [PDF]
, 1997 Several recent experimental and analytical investigations of cavitating flows have revealed new phenomena which clearly affect how we should view cavitation growth and collapse and the strategies used to ameliorate its adverse effects. On the scale of
Brennen, Christopher E.
core
The Noise Generated by the Collapse of a Cloud of Cavitation Bubbles [PDF]
, 1995 The focus of this paper is the numerical simulation of the dynamics and acoustics of a cloud of cavitating bubbles. The prototypical problem solved considers a finite cloud of nuclei that is exposed to a decrease in the ambient pressure which causes the
Brennen, C. E., Wang, Y.-C.
core
Shock-wave model of acoustic cavitation
Ultrasonics Sonochemistry, 2008 Shock-wave model of liquid cavitation due to an acoustic wave was developed, showing how the primary energy of an acoustic radiator is absorbed in the cavitation region owing to the formation of spherical shock-waves inside each gas bubble. The model is based on the concept of a hypothetical spatial wave moving through the cavitation region. It permits
Sergei L, Peshkovsky +1 more
openaire +2 more sources
A Generalized Compressible Cavitation Model [PDF]
, 2001 A new multi-phase model for low speed gas/liquid mixtures is presented; it does not require ad-hoc closure models for the variation of mixture density with pressure and yields thermodynamically correct acoustic propagation for multi-phase mixtures.
Ahuja, V. +2 more
core
Acoustic cavitation, bubble dynamics and sonoluminescence
Ultrasonics Sonochemistry, 2007 Basic facts on the dynamics of bubbles in water are presented. Measurements on the free and forced radial oscillations of single spherical bubbles and their acoustic (shock waves) and optic (luminescence) emissions are given in photographic series and diagrams.
Lauterborn, Werner +4 more
openaire +4 more sources
Acoustic cavitation and bubble dynamics
Archives of Acoustics, 2008 Acoustic cavitation is investigated experimentally and theoretically starting with a single bubble in an acoustic field. The single bubble is trapped in an acoustic resonator and observed by high-speed imaging and acoustic measurements following its transient dynamics to a possible steady state after generation by laser light.
Lauterborn, Werner +5 more
openaire +2 more sources
Acoustic cavitation mechanism: A nonlinear model
Ultrasonics Sonochemistry, 2012 During acoustic cavitation process, bubbles appear when acoustic pressure reaches a threshold value in the liquid. The ultrasonic field is then submitted to the action of the bubbles. In this paper we develop a model to analyze the cavitation phenomenon in one-dimensional standing waves, based on the nonlinear code SNOW-BL.
Christian, Vanhille +1 more
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Origin of broadband acoustic emission from a dancing cavitation bubble
Applied Physics ExpressAcoustic cavitation generates bubbles exhibiting violent expansion and contraction under intense ultrasound in liquids. The acoustic emissions (AE) spectrum from cavitation bubbles contains harmonics, subharmonics, ultraharmonics, and broadband noise ...
Hyang-Bok Lee, Pak-Kon Choi
doaj +1 more source
Journal of Marine Science and EngineeringUnderwater Wireless Acoustic Power Transfer (UWAPT) systems face severe efficiency limitations from acoustic cavitation during high-power operation. This paper presents a comprehensive optimization method to mitigate this limitation.
Yuhang Li +4 more
doaj +1 more source
Remnants of Albunex® nucleate acoustic cavitation
Ultrasound in Medicine & Biology, 1997 Mice were injected with 0.1 mL Albunex and exposed to 200 pulses from a piezoelectric lithotripter at times ranging from 5 min to 24 h following injection. Each pulse was approximately 1.5 sinusoidal oscillations at a fundamental frequency of approximately 0.1 MHz with pressure amplitude of approximately 2 MPa.
D, Dalecki +4 more
openaire +2 more sources