High-speed experimental photography of collapsing cavitation bubble between a spherical particle and a rigid wall

2018 ◽  
Vol 30 (6) ◽  
pp. 1012-1021 ◽  
Author(s):  
Yu-ning Zhang ◽  
Xiao-yang Xie ◽  
Yu-ning Zhang ◽  
Yong-xue Zhang
Keyword(s):  
Spherical Particle ◽  
Cavitation Bubble ◽  
High Speed ◽  
Rigid Wall

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.

Study of cavitation bubble dynamics during Ho:YAG laser lithotripsy by high-speed camera

2016 ◽  
Author(s):  
Jian J. Zhang ◽  
Jason R. Xuan ◽  
Honggang Yu ◽  
Dennis Devincentis
Keyword(s):  
Cavitation Bubble ◽  
High Speed ◽  
Bubble Dynamics ◽  
Laser Lithotripsy ◽  
High Speed Camera ◽  
Ho:Yag Laser

Pressure measurement and high-speed observation on the cavitation bubble cloud due to the backscattering of HIFU from a laser-induced bubble

2018 ◽  
Vol 50 (6) ◽  
pp. 065512 ◽  
Author(s):  
Toshiyuki Ogasawara ◽  
Taisei Horiba ◽  
Taisuke Sano ◽  
Hiroyuki Takahira
Keyword(s):  
Pressure Measurement ◽  
Cavitation Bubble ◽  
High Speed ◽  
Bubble Cloud

Cavitation erosion behavior of hydraulic concrete under high-speed flow

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Xin Wang ◽  
Ting-Qiang Xie
Keyword(s):  
Cavitation Bubble ◽  
High Speed ◽  
Cavitation Erosion ◽  
Concrete Strength ◽  
Bubble Collapse ◽  
High Speed Flow ◽  
Content Type ◽  
Erosion Behavior ◽  
Hydraulic Concrete ◽  
Speed Flow

Purpose Cavitation erosion has always been a common technical problem in a hydraulic discharging structure. This paper aims to investigate the cavitation erosion behavior of hydraulic concrete under high-speed flow. Design/methodology/approach A high-speed and high-pressure venturi cavitation erosion generator was used to simulate the strong cavitation. The characteristics of hydrodynamic loads of cavitation bubble collapse zone, the failure characteristics and the erosion development process of concrete were investigated. The main influencing factors of cavitation erosion were discussed. Findings The collapse of the cavitation bubble group produced a high frequency, continuous and unsteady pulse load on the wall of concrete, which was more likely to cause fatigue failure of concrete materials. The cavitation action position and the main frequency of impact load were greatly affected by the downstream pressure. A power exponential relationship between cavitation load, cavitation erosion and flow speed was observed. With the increase of concrete strength, the degree of damage of cavitation erosion was approximately linearly reduced. Originality/value After cavitation erosion, a skeleton structure was formed by the accumulation of granular particles, and the relatively independent bulk structure of the surface differed from the flake structure formed after abrasion.

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 A Photographic Study of Spark-Induced Cavitation Bubble Collapse

1972 ◽  
Vol 94 (4) ◽  
pp. 825-832 ◽  
Author(s):  
C. L. Kling ◽  
F. G. Hammitt
Keyword(s):  
Cavitation Bubble ◽  
High Speed ◽  
Bubble Collapse ◽  
Solid Boundary ◽  
High Speed Photography ◽  
Minimum Volume ◽  
Cavitation Bubbles ◽  
Flowing System

The collapse of spark-induced cavitation bubbles in a flowing system was studied by means of high speed photography. The migration of cavitation bubbles toward a nearby solid boundary during collapse and rebound was observed. Near its minimum volume the bubble typically formed a high speed microjet, which struck the nearby surface causing individual damage craters on soft aluminum.

Chromatically encoded high-speed photography of cavitation bubble dynamics inside inhomogeneous ophthalmic tissue

2016 ◽  
Author(s):  
N. Tinne ◽  
B. Matthias ◽  
F. Kranert ◽  
C. Wetzel ◽  
A. Krüger ◽  
...  
Keyword(s):  
Cavitation Bubble ◽  
High Speed ◽  
Bubble Dynamics ◽  
High Speed Photography
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