Dynamics of an acoustically driven cavitation bubble cluster in the vicinity of a solid surface

2021 ◽  
Vol 33 (12) ◽  
pp. 123311
Author(s):  
Eslam Ezzatneshan ◽  
Hamed Vaseghnia
Keyword(s):  
Solid Surface ◽  
Cavitation Bubble ◽  
Bubble Cluster

scholarly journals A Novel One-Camera-Five-Mirror Three-Dimensional Imaging Method for Reconstructing the Cavitation Bubble Cluster in a Water Hydraulic Valve

2018 ◽  
Vol 8 (10) ◽  
pp. 1783 ◽  
Author(s):  
Haihang Wang ◽  
He Xu ◽  
Vishwanath Pooneeth ◽  
Xiao-Zhi Gao
Keyword(s):  
Cavitation Bubble ◽  
Three Dimensional ◽  
Numerical Approach ◽  
Imaging Method ◽  
Main Approach ◽  
Robust Algorithms ◽  
Bubble Cluster ◽  
Throttle Valve ◽  
Feature Based ◽  
Hydraulic Valve

In order to study the bubble morphology, a novel experimental and numerical approach was implemented in this research focusing on the analysis of a transparent throttle valve made by Polymethylmethacrylate (PMMA) material. A feature-based algorithm was written using the MATLAB software, allowing the 2D detection and three-dimensional (3D) reconstruction of bubbles: collapsing and clustered ones. The valve core, being an important part of the throttle valve, was exposed to cavitation; hence, to distinguish it from the captured frames, the faster region-based convolutional neural network (R-CNN) algorithm was used to detect its morphology. Additionally, the main approach grouping the above listed techniques was implemented using an optimized virtual stereo vision arrangement of one camera and five plane mirrors. The results obtained during this study validated the robust algorithms and optimization applied.

Measurement of pressure produced at a solid surface by an acoustically driven cavitation bubble cloud

2006 ◽  
Vol 119 (5) ◽  
pp. 3408-3408
Author(s):  
Teiichiro Ikeda ◽  
Shin Yoshizawa ◽  
Yoichiro Matsumoto ◽  
Michael R. Bailey ◽  
Lawrence A. Crum ◽  
...  
Keyword(s):  
Solid Surface ◽  
Cavitation Bubble ◽  
Bubble Cloud

Cavitation bubble cluster activity in the breakage of stones by shock wave lithotripsy

2002 ◽  
Vol 111 (5) ◽  
pp. 2461
Author(s):  
Yuriy A. Pishchalnikov ◽  
Oleg A. Sapozhnikov ◽  
James C. Williams ◽  
Andrew P. Evan ◽  
James A. McAteer ◽  
...  
Keyword(s):  
Shock Wave ◽  
Cavitation Bubble ◽  
Shock Wave Lithotripsy ◽  
Bubble Cluster ◽  
Cluster Activity

scholarly journals Effect of Wettability on Collapsing Cavitation Bubble near Solid Surface Studied by Multi-Relaxation-Time Lattice Boltzmann Model

2018 ◽  
Vol 8 (6) ◽  
pp. 940 ◽  
Author(s):  
Yipeng Zhu ◽  
Minglei Shan ◽  
Yu Yang ◽  
Qingbang Han ◽  
Changping Zhu ◽  
...  
Keyword(s):  
Relaxation Time ◽  
Solid Surface ◽  
Lattice Boltzmann ◽  
Cavitation Bubble ◽  
Lattice Boltzmann Model ◽  
Boltzmann Model

scholarly journals Cavitation Bubble Cluster Activity in the Breakage of Kidney Stones by Lithotripter Shockwaves

2003 ◽  
Vol 17 (7) ◽  
pp. 435-446 ◽  
Author(s):  
Yuriy A. Pishchalnikov ◽  
Oleg A. Sapozhnikov ◽  
Michael R. Bailey ◽  
James C. Williams ◽  
Robin O. Cleveland ◽  
...  
Keyword(s):  
Kidney Stones ◽  
Cavitation Bubble ◽  
Bubble Cluster ◽  
Cluster Activity

scholarly journals Non-Spherical Collapse of an Air Bubble Subjected to a Lithotripter Pulse

2007 ◽  
Author(s):  
Eric Johnsen ◽  
Tim Colonius ◽  
Wayne Kreider ◽  
Michael R. Bailey
Keyword(s):  
Numerical Simulations ◽  
Solid Surface ◽  
Cavitation Bubble ◽  
Functional Dependence ◽  
Free Field ◽  
Bubble Collapse ◽  
Shockwave Lithotripsy ◽  
Stone Surface ◽  
Air Bubble ◽  
Spherical Collapse

In order to better understand the contribution of bubble collapse to stone comminution in shockwave lithotripsy, the shock-induced and Rayleigh collapse of a spherical air bubble is investigated using numerical simulations, and the free-field collapse of a cavitation bubble is studied experimentally. In shock-induced collapse near a wall, it is found that the presence of the bubble greatly amplifies the pressure recorded at the stone surface; the functional dependence of the wall pressure on the initial standoff distance and the amplitude are presented. In Rayleigh collapse near a solid surface, the proximity of the wall retards the flow and leads to a more prominent jet. Experiments show that re-entrant jets form in the collapse of cavitation bubbles excited by lithotripter shockwaves in a fashion comparable to previous studies of collapse near a solid surface.

Sign in / Sign up

Export Citation Format

Share Document