Nonlinear interaction between gas bubble and free surface

Wang, Qianxi; Yeo, K. S.; Khoo, Bee Luan; Lam, K.Y.

doi:10.1016/0045-7930(96)00007-2

Cited by 203 publications

(137 citation statements)

References 14 publications

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“…A similar domain-cut procedure was used by Zhang et al [9], whose model also allows a shear layer to be generated along the cut surface during the impact. Recently, Wang et al [6], utilizing a concept due to Lundgren and Mansour [10], proposed that the flow circulation generated during jet impact be modelled by a vortex ring placed inside the tube of the toroidal bubble. This ingenious device removes the discontinuity of the velocity potential due to non-zero flow circulation, and hence also the need for an explicit domain cut.…”

Section: Introductionmentioning

confidence: 99%

“…The smoothing procedure, which removes the noise generated by the instabilities, allows a reasonable time step to be used to carry forward the computation. The vortex ring method introduced by Wang et al [6] to represent flow circulation for axisymmetric toroidal bubbles is extended to 3D bubbles here. In this approach, the potential of the flow is decomposed into a vortex-induced part and a remainder that is continuous throughout the fluid domain.…”

Section: Introductionmentioning

confidence: 99%

“…Much about the phenomenon of bubble jetting has been understood through these studies (Guerri et al [4]; Blake et al [5]). In particular, it was found that the main damage is done to the structure during the toroidal phase, i.e., after the jet impact [5,6]. The formation of toroidal bubbles from the jetting of axisymmetric bubbles was first computationally simulated by Best [7,8].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

3D Jet Impact and Toroidal Bubbles

Zhang¹,

Yeo²,

Khoo³

et al. 2001

Journal of Computational Physics

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168

103

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

3D Jet Impact and Toroidal Bubbles

Zhang¹,

Yeo²,

Khoo³

et al. 2001

Journal of Computational Physics

Self Cite

168

103

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“…The BIM based on the potential flow theory is grid-free in the flow domain and has been widely used in bubble boundary interactions for axisymmetric cases [20][21][22][23][24][25][26][27][28][29] and for three-dimensional configurations [30 -33]. Recently, Wang et al [34 -37] developed the BIM for bubble dynamics in a compressible liquid.…”

Section: Computational Bubble Dynamicsmentioning

confidence: 99%

Cell mechanics in biomedical cavitation

2015

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Studies on the deformation behaviours of cellular entities, such as coated microbubbles and liposomes subject to a cavitation flow, become increasingly important for the advancement of ultrasonic imaging and drug delivery. Numerical simulations for bubble dynamics of ultrasound contrast agents based on the boundary integral method are presented in this work. The effects of the encapsulating shell are estimated by adapting Hoff's model used for thin-shell contrast agents. The viscosity effects are estimated by including the normal viscous stress in the boundary condition. In parallel, mechanical models of cell membranes and liposomes as well as state-of-the-art techniques for quantitative measurement of viscoelasticity for a single cell or coated microbubbles are reviewed. The future developments regarding modelling and measurement of the material properties of the cellular entities for cutting-edge biomedical applications are also discussed.

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“…[4][5][6][7] Between these two extremes, the translational dynamics of bubbles oscillating near compliant interfaces are much more nuanced and depend on a number of factors. 8,9 With the current expanding interest in using microbubbles to induce therapeutic bioeffects in tissue there has also been interest in the deformation of, and stresses induced within, adjacent tissue due to the bubble motion.…”

Section: Introductionmentioning

confidence: 99%

Model for the dynamics of a spherical bubble undergoing small shape oscillations between parallel soft elastic layers

Hay

Ilinskii

Zabolotskaya

et al. 2013

The Journal of the Acoustical Society of America

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A model is developed for a pulsating and translating gas bubble immersed in liquid in a channel formed by two soft, thin elastic parallel layers having densities equal to that of the surrounding liquid and small, but finite, shear moduli. The bubble is nominally spherical but free to undergo small shape deformations. Shear strain in the elastic layers is estimated in a way which is valid for short, transient excitations of the system. Coupled nonlinear second-order differential equations are obtained for the shape and position of the bubble, and numerical integration of an expression for the liquid velocity at the layer interfaces yields an estimate of the elastic layer displacement. Numerical integration of the dynamical equations reveals behavior consistent with laboratory observations of acoustically excited bubbles in ex vivo vessels reported by Chen et al.

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Nonlinear interaction between gas bubble and free surface

Cited by 203 publications

References 14 publications

3D Jet Impact and Toroidal Bubbles

3D Jet Impact and Toroidal Bubbles

Cell mechanics in biomedical cavitation

Model for the dynamics of a spherical bubble undergoing small shape oscillations between parallel soft elastic layers

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