Dynamic behaviour of a bubble near an elastic infinite interface

Klaseboer, Evert; Turangan, Cary; Khoo, Boo Cheong

doi:10.1016/j.ijmultiphaseflow.2006.05.005

Cited by 44 publications

(14 citation statements)

References 28 publications

(23 reference statements)

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“…The implications of this phenomenon in vivo are discussed further in section 4. Details of the modelling of nonspherical bubble oscillations are outside the scope of this review and require the use of computationally intensive techniques such as boundary and finite element methods [51][52][53][54][55].…”

Section: Non-spherical Behaviourmentioning

confidence: 99%

Cavitation and contrast: The use of bubbles in ultrasound imaging and therapy

Stride

Coussios

2009

Proc Inst Mech Eng H

230

174

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Microbubbles and cavitation are playing an increasingly significant role in both diagnostic and therapeutic applications of ultrasound. Microbubble ultrasound contrast agents have been in clinical use now for more than two decades, stimulating the development of a range of new contrast-specific imaging techniques which offer substantial benefits in echocardiography, microcirculatory imaging, and more recently, quantitative and molecular imaging. In drug delivery and gene therapy, microbubbles are being investigated/developed as vehicles which can be loaded with the required therapeutic agent, traced to the target site using diagnostic ultrasound, and then destroyed with ultrasound of higher intensity energy burst to release the material locally, thus avoiding side effects associated with systemic administration, e.g. of toxic chemotherapy. It has moreover been shown that the motion of the microbubbles increases the permeability of both individual cell membranes and the endothelium, thus enhancing therapeutic uptake, and can locally increase the activity of drugs by enhancing their transport across biologically inaccessible interfaces such as blood clots or solid tumours. In high-intensity focused ultrasound (HIFU) surgery and lithotripsy, controlled cavitation is being investigated as a means of increasing the speed and efficacy of the treatment. The aim of this paper is both to describe the key features of the physical behaviour of acoustically driven bubbles which underlie their effectiveness in biomedical applications and to review the current state of the art.

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Section: Non-spherical Behaviourmentioning

confidence: 99%

Cavitation and contrast: The use of bubbles in ultrasound imaging and therapy

Stride

Coussios

2009

Proc Inst Mech Eng H

230

174

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show abstract

“…Using sophisticated numerical calculations Klaseboer and Khoo (2004), Pei et al (2005), Klaseboer et al (2006), andTurangan et al (2006) were able to simulate many of the dynamical features of bubble oscillations near elastic boundaries. This includes formation of the annular flow, bubble splitting, and the generation of the liquid jets flowing in opposite direction.…”

confidence: 99%

Cavitation in Non-Newtonian Fluids

Brujan

2011

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“…More generally, the non-spherical bubble dynamics is highly dependent on boundary conditions. The interactions between a single bubble and many kinds of boundaries have been investigated, such as free surfaces [21,22,23], elastic membranes [24], suspended objects [25,26], floating structures [27,28], other bubbles [29,30], etc. Nevertheless, the presence of the airgun-body itself imposes an additional important geometric boundary condition which is quite different from those mentioned above.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of a toroidal bubble on a cylinder surface with an application to geophysical exploration

Li,

Prosperetti,

van der Meer

2020

Preprint

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During the operation of a seismic airgun source, a certain amount of compressed highpressure air is released from the airgun chamber into the surrounding water, generating an expanding toroidal bubble attached to the airgun-body. The subsequent oscillations of the bubble generate low-frequency pressure waves, which are used to map the ocean subbottom, e.g., to locate oil and gas reserves. The bubble dynamic behavior and the emitted pressure waves are inevitably influenced by the airgun-body. However, the bubbleairgun-body interaction is far from well understood. This paper investigates the strong interaction between a long cylinder and an attached toroidal bubble via hundreds of boundary integral simulations, aiming to provide new physical insights for airgun-bubble dynamics. Firstly, the overall physical phenomena are discussed and three types of bubble collapse patterns are identified, namely (i) upward jetting due to gravity, (ii) annular jet toward the cylinder body and (iii) weak/no jet. Thereafter, we investigate the effects of the cylinder radius, initial bubble pressure and Froude number on the bubble oscillation period and the pressure wave induced by the bubble. At last, the impact of a cylinder on a Sercel type airgun-bubble is discussed with a particular focus on the spectrum of the pressure waves.

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Dynamic behaviour of a bubble near an elastic infinite interface

Cited by 44 publications

References 28 publications

Cavitation and contrast: The use of bubbles in ultrasound imaging and therapy

Cavitation and contrast: The use of bubbles in ultrasound imaging and therapy

Cavitation in Non-Newtonian Fluids

Dynamics of a toroidal bubble on a cylinder surface with an application to geophysical exploration

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