Experimental investigations of cavitation-bubble collapse in the neighbourhood of a solid boundary

ABSTRACTThis study utilized a U-shape platform device to generate a single cavitation bubble for the detail analysis of the flow field characteristics and the cause of the counter jet during the process of bubble collapse induced by pressure wave. A series of bubble collapse flows induced by pressure waves of different strengths are investigated by positioning the cavitation bubble at different stand-off distances to the solid boundary. It is found that the Kelvin-Helmholtz vortices are formed when the liquid jet induced by the pressure wave penetrates the bubble surface. If the bubble center to the solid boundary is within one to three times the bubble's radius, a stagnation ring will form on the boundary when impacted by the penetrated jet. The liquid inside the stagnation ring is squeezed toward the center of the ring to form a counter jet after the bubble collapses. At the critical position, where the bubble center from the solid boundary is about three times the bubble's radius, the bubble collapse flows will vary. Depending on the strengths of the pressure waves applied, either just the Kelvin-Helmholtz vortices form around the penetrated jet or the penetrated jet impacts the boundary directly to generate the stagnation ring and the counter jet flow. This phenomenon used the particle image velocimetry method can be clearly revealed the flow field variation of the counter jet. If the bubble surface is in contact with the solid boundary, the liquid jet can only splash radially without producing the stagnation ring and the counter jet. The complex phenomenon of cavitation bubble collapse flows are clearly manifested in this study.

Download Full-text

A Photographic Study of Spark-Induced Cavitation Bubble Collapse

Journal of Basic Engineering ◽

10.1115/1.3425571 ◽

1972 ◽

Vol 94 (4) ◽

pp. 825-832 ◽

Cited By ~ 66

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.

Download Full-text

Experimental Investigations of Cavitation Bubble Collapse in a Water Shock Tube

Transactions of the Japan Society of Mechanical Engineers ◽

10.1299/kikai1938.44.579 ◽

1978 ◽

Vol 44 (378) ◽

pp. 579-579 ◽

Cited By ~ 1

Author(s):

Shigeo FUJIKAWA ◽

Teruaki AKAMATSU

Keyword(s):

Shock Tube ◽

Cavitation Bubble ◽

Bubble Collapse ◽

Experimental Investigations

Download Full-text

Spatial and Temporal Measurements Of The Impulsive Pressure Generated By Cavitation Bubble Collapse Near A Solid Boundary

10.1063/1.2210401 ◽

2006 ◽

Author(s):

Yi-Chun Wang

Keyword(s):

Cavitation Bubble ◽

Bubble Collapse ◽

Solid Boundary ◽

Impulsive Pressure

Download Full-text

Application of piezoelectric PVDF film to the measurement of impulsive forces generated by cavitation bubble collapse near a solid boundary

Experimental Thermal and Fluid Science ◽

10.1016/j.expthermflusci.2007.05.003 ◽

2007 ◽

Vol 32 (2) ◽

pp. 403-414 ◽

Cited By ~ 44

Author(s):

Yi-Chun Wang ◽

Yu-Wen Chen

Keyword(s):

Cavitation Bubble ◽

Bubble Collapse ◽

Solid Boundary ◽

Pvdf Film ◽

Impulsive Forces

Download Full-text

Experimental Investigations of Cavitation Bubble Collapse by a Water Shock Tube

Bulletin of JSME ◽

10.1299/jsme1958.21.223 ◽

1978 ◽

Vol 21 (152) ◽

pp. 223-230 ◽

Cited By ~ 43

Author(s):

Shigeo FUJIKAWA ◽

Teruaki AKAMATSU

Keyword(s):

Shock Tube ◽

Cavitation Bubble ◽

Bubble Collapse ◽

Experimental Investigations

Download Full-text

PIV Measurements of Cavitation Bubble Collapse Flow Induced by Pressure Wave

Volume 7: Fluid Flow, Heat Transfer and Thermal Systems, Parts A and B ◽

10.1115/imece2010-37303 ◽

2010 ◽

Author(s):

Sheng-Hsueh Yang ◽

Shenq-Yuh Jaw ◽

Keh-Chia Yeh

Keyword(s):

Cavitation Bubble ◽

High Speed ◽

Bubble Radius ◽

Ccd Camera ◽

Bubble Surface ◽

Bubble Collapse ◽

Solid Boundary ◽

Liquid Jet ◽

Pressure Waves ◽

Critical Position

In this study, a single cavitation bubble is generated by rotating a U-tube filled with water. A series of bubble collapse flows induced by pressure waves of different strengths are investigated by positioning the cavitation bubble at different stand-off distances to a solid boundary. Particle images of bubble collapse flow recorded by high speed CCD camera are analyzed by multi-grid, iterative particle image distortion method. Detail velocity variations of the transient bubble collapse flow are obtained. It is found that a Kelvin–Helmholtz vortex is formed when a liquid jet penetrates the bubble surface. If the bubble center to the solid boundary is within one to three times of the bubble radius, the liquid jet is able to impinge the solid boundary to form a stagnation ring. The fluid inside the stagnation ring will be squeezed toward the center of the ring to form a counter jet. At certain critical position, the bubble collapse flow will produce a Kelvin–Helmholtz vortex, the Richtmyer-Meshkov instability, or the generation of a counter jet flow, depending on the strengths of the pressure waves. If the bubble surface is in contact with the solid boundary, the liquid jet can only splash inside-out without producing the stagnation ring and the counter jet. The complex phenomenon of cavitation bubble collapse flows is clearly manifested in this study.

Download Full-text

Fluid–structure modelling for material deformation during cavitation bubble collapse

Journal of Fluids and Structures ◽

10.1016/j.jfluidstructs.2021.103370 ◽

2021 ◽

Vol 106 ◽

pp. 103370

Author(s):

Prasanta Sarkar ◽

Giovanni Ghigliotti ◽

Jean-Pierre Franc ◽

Marc Fivel

Keyword(s):

Cavitation Bubble ◽

Bubble Collapse ◽

Fluid Structure ◽

Material Deformation

Download Full-text

Virtual Simulation of the Effects of Intracranial Fluid Cavitation in Blast-Induced Traumatic Brain Injury

Volume 3: Biomedical and Biotechnology Engineering ◽

10.1115/imece2015-52696 ◽

2015 ◽

Cited By ~ 1

Author(s):

Shivonne Haniff ◽

Paul Taylor ◽

Aaron Brundage ◽

Damon Burnett ◽

Candice Cooper ◽

...

Keyword(s):

Traumatic Brain Injury ◽

Brain Injury ◽

Cavitation Bubble ◽

Superior Sagittal Sinus ◽

Von Mises Stress ◽

Bubble Collapse ◽

Compressive Wave ◽

Sagittal Sinus ◽

Microscale Model ◽

Von Mises

A microscale model of the brain was developed in order to understand the details of intracranial fluid cavitation and the damage mechanisms associated with cavitation bubble collapse due to blast-induced traumatic brain injury (TBI). Our macroscale model predicted cavitation in regions of high concentration of cerebrospinal fluid (CSF) and blood. The results from this macroscale simulation directed the development of the microscale model of the superior sagittal sinus (SSS) region. The microscale model includes layers of scalp, skull, dura, superior sagittal sinus, falx, arachnoid, subarachnoid spacing, pia, and gray matter. We conducted numerical simulations to understand the effects of a blast load applied to the scalp with the pressure wave propagating through the layers and eventually causing the cavitation bubbles to collapse. Collapse of these bubbles creates spikes in pressure and von Mises stress downstream from the bubble locations. We investigate the influence of cavitation bubble size, compressive wave amplitude, and internal bubble pressure. The results indicate that these factors may contribute to a greater downstream pressure and von Mises stress which could lead to significant tissue damage.

Download Full-text