Motion characteristics of cavitation bubble near the rigid wall with the driving of acoustic wave

2015 ◽  
Vol 29 (1) ◽  
pp. 17-32 ◽  
Author(s):  
Xi Ye ◽  
A.-man Zhang ◽  
Dong-rui Zeng
Keyword(s):  
Acoustic Wave ◽  
Cavitation Bubble ◽  
Rigid Wall ◽  
Motion Characteristics

Cavitation Bubble in Compressible Fluid Near the Rigid Wall Subjected to the Acoustic Wave with Arbitrary Incidence Angle in Three-Dimensional

2014 ◽  
Vol 31 (3) ◽  
pp. 307-318 ◽  
Author(s):  
X. Ye ◽  
X.-L. Yao ◽  
L.-Q. Sun ◽  
B. Wang
Keyword(s):  
Acoustic Wave ◽  
Cavitation Bubble ◽  
High Speed ◽  
Incidence Angle ◽  
Oscillation Amplitude ◽  
Three Dimensional ◽  
Sound Field ◽  
Rigid Wall ◽  
Boundary Integral ◽  
Three Dimensional Model

AbstractA balanced cavitation bubble is released near the rigid wall in the sound field generated by the incidence plane wave and its reflecting wave. With the modified boundary integral equation, the dynamics of bubble is solved considering the compressibility of fluid in this paper. Also the Bernoulli equation as the boundary condition for cavitation bubble in sound field is deduced using Euler equation. Since the arbitrary incidence angle of acoustic wave, the three-dimensional model is utilized. The bubble will expand or contract at first according to the initial phase of acting acoustic pressure on bubble surface. And during the contraction phase, the liquid jet with high speed will be generated pointing to rigid wall but be deflected to the incidence direction of acoustic wave. The oblique degree of jet will be affected by the incidence angle and initial distance between bubble center and rigid wall. The oscillation amplitude of bubble will be affected by the incidence amplitude and incidence frequency, but be limited by the rigid wall. Since the compressibility of fluid, the perturbation will propagate to the far-field. Thus the oscillation amplitude of bubble will be reduced.

The behavior of a cavitation bubble near a rigid wall

1994 ◽  
pp. 429-436 ◽  
Author(s):  
Sheguang Zhang ◽  
James H. Duncan ◽  
Georges L. Chahine
Keyword(s):  
Cavitation Bubble ◽  
Rigid Wall

scholarly journals Collapsing dynamics of a laser-induced cavitation bubble near the edge of a rigid wall

2020 ◽  
Vol 67 ◽  
pp. 105157 ◽  
Author(s):  
Yuning Zhang ◽  
Xu Qiu ◽  
Xiangqing Zhang ◽  
Ningning Tang ◽  
Yuning Zhang
Keyword(s):  
Cavitation Bubble ◽  
Rigid Wall

Study of Coupled Acoustic Wave Propagation in a Circular Metal Pipe for the Correlation Method

2008 ◽  
Author(s):  
Ho-Wuk Kim ◽  
Sang-Kwon Lee ◽  
Min-Soo Kim
Keyword(s):  
Circular Cylinder ◽  
Acoustic Wave ◽  
Acoustic Waves ◽  
Correlation Method ◽  
Rigid Wall ◽  
Acoustic Energy ◽  
Metal Pipe ◽  
Density Analysis ◽  
Leakage Monitoring ◽  
The City

The circular cylinder pipe is extensively used for the supplement of the gas. The leakage of this gas induces the catastrophic problem when it leases into open area in the city without any monitoring. A correlation method has been mostly used for the detection of the leakage. It is needed a good coherence and an efficient energy transmission to the external sensors for the reliable estimation of the correlation. This paper investigated theoretically the propagation of the acoustic wave of the circular cylinder pipe containing the gas in a pipe for the development of the leakage monitoring system. The acoustic wave is propagated through the waveguide of the circular pipe with the characteristics acoustically coupled by the gas contained in a cylinder and the shell. However, as a special case, the acoustic waves in a metal pipe containing gas are corresponded closely to the uncoupled in-vacuo shell waves and to the rigid-wall duct fluid waves. In this case, the dominant acoustic energy can be estimated at the frequencies in which coincidence between the shell modes and the acoustic modes occurs. In the paper, the characteristics of the dominant waves are theoretically investigated and analyzed experimenttally with a long steel pipe. The measured data is clearly analyzed by the continuous wavelet transform and by spectral density analysis.

Study on Coupled Acoustic Wave Propagation of Circular Metal Pipe

2008 ◽  
Author(s):  
Ho-Wuk Kim ◽  
Min-Soo Kim ◽  
Sang-Kwon Lee
Keyword(s):  
Circular Cylinder ◽  
Acoustic Wave ◽  
Acoustic Waves ◽  
Coherence Function ◽  
Rigid Wall ◽  
Acoustic Energy ◽  
Metal Pipe ◽  
Density Analysis ◽  
Leakage Monitoring ◽  
The City

The circular cylinder pipe is extensively used for the supplement of the gas. The leakage of this gas induces the catastrophic problem when it leases into open area in the city without any monitoring. This paper investigated theoretically the propagation of the acoustic wave of the circular cylinder pipe containing the gas in a pipe for the development of the leakage monitoring system. The acoustic wave is propagated through the waveguide of the circular pipe with the characteristics acoustically coupled by the gas contained in a cylinder and the shell. However, as a special case, the acoustic waves in a metal pipe containing gas are corresponded closely to the uncoupled in-vacuo shell waves and to the rigid-wall duct fluid waves. In this case, the dominant acoustic energy can be estimated at the frequencies in which coincidence between the shell modes and the acoustic modes occurs. In the paper, the characteristics of the dominant waves are theoretically investi-gated and analyzed experimentally with a long steel pipe. The measured data is clearly analyzed by the continuous wavelet transform and by spectral density analysis. Finally, a bandwidth of the frequency for a good estimation of the correlation would be suggested through the consideration of the coherence function between two sensors.

General Solution of Acoustic Wave Equation for Circular Reversing Chamber with Temperature Gradient

1991 ◽  
Vol 113 (4) ◽  
pp. 543-550 ◽  
Author(s):  
Yang-Hann Kim ◽  
Jae Woong Choi
Keyword(s):  
Wave Equation ◽  
Temperature Gradient ◽  
General Solution ◽  
Acoustic Wave ◽  
Transmission Loss ◽  
Rigid Wall ◽  
Acoustic Wave Equation ◽  
Mean Flow ◽  
Helmholtz Resonators ◽  
Twisting Angle

A general solution for transmission loss in a circular reversing chamber with the effects of temperature gradient, offset, and twisting angle variations of inlet/outlet ports is obtained by using the mode matching technique. The assumptions included in the solution method are division of the reversing chamber into segments, continuity of pressure and velocity at the boundaries of adjacent elements, constant temperature along each segment, and rigid wall boundary condition. Furthermore, the general solution can reduce to the existing solution of acoustic wave equation for a reversing chamber when no mean flow of exhaust gas and temperature gradient are present. The numerical simulation results based upon the obtained governing equation have the same trough frequencies and shapes of transmission loss curves as the experimental results performed on various types of reversing chambers. From these simulations, it is determined that the diameter of the reversing chamber dictates that cutoff frequencies in the transmission loss curves, and its length controls the number of standing waves in the chamber. Reversing chambers exhibit the acoustic characteristics of simple expansion chambers when the ratios of length over diameter are small. Even for limiting cases, i.e., Helmholtz resonators and close ended pipes, simulations produce the predicted results derived by other existing theories for silencers.

scholarly journals Velocity analysis for collapsing cavitation bubble near a rigid wall under an ultrasound field

2016 ◽  
Vol 65 (4) ◽  
pp. 044304
Author(s):  
Guo Ce ◽  
Zhu Xi-Jing ◽  
Wang Jian-Qing ◽  
Ye Lin-Zheng
Keyword(s):  
Cavitation Bubble ◽  
Rigid Wall ◽  
Velocity Analysis ◽  
Ultrasound Field

Linear and non-linear compression wave interaction with saturated porous layer

2010 ◽  
Vol 32 (2) ◽  
pp. 71-80
Author(s):  
Amir A. Gubaidulin ◽  
Olga Yu. Boldyreva ◽  
Dina N. Dudko
Keyword(s):  
Porous Medium ◽  
Acoustic Wave ◽  
Porous Layer ◽  
Saturated Porous Medium ◽  
Wave Interaction ◽  
Velocity Model ◽  
Rigid Wall ◽  
Compression Waves ◽  
Non Linear ◽  
Saturated Porous Layer

Features of compression waves propagation in a gas-saturated porous medium have been investigated. The passage of wave from gas to porous medium and its reflection from rigid wall has been studied. The mathematical two-velocity model with two stress tensors has been used. Both non-linear and linear approaches have been employed. Features of acoustic wave transmission in a porous layer and following reflection from obstacle have been investigated. The results of the linear analysis allow us to determine the role of non-linear effects in wave propagation and reflection phenomena in saturated porous media and to interpret the results of acoustic wave interaction with porous layer obtained by experiment or finite-difference method.

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