Spectrum Of Acoustic Noise Excited By Collapse Of Spherical Bubble In Viscoelastic
Liquid
Author(s)
L. Likhterov
Abstract
Spectrum of acoustic noise excited by collapse
of spherical bubble in viscoelastic liquid
L. Likhterov
Institute for Applied Research, Ben-Gurion University of the Negev,
Israel
Abstract
The expression for the high frequency asymptotics of the acoustic noise spectrum
induced by collapse of a spherical bubble in viscoelastic liquid (Oldroyd model
B) is derived taking into account the liquid compressibility. It is shown that, in
the first approximation, the spectral density of the acoustic energy emitted by a
cavity collapse varies as the following function of the frequency:
S(o) - o4 exp( -6aw2 ) and decreases approximately by 12 decibels per octave in
the considered case of dimensionless parameters.
1 Introduction
The study of acoustic emission arising during bubble's growth and collapse is
associated with acoustic detection techniques used for early boiling detection.
The experimental and theoretical results may be useful for detection of acoustic
noise in high-voltage power supplies and mic
Keywords
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