Results 261 to 270 of about 44,044 (307)

Vortex ring and bubble interaction: Effects of bubble size on vorticity dynamics and bubble dynamics

Physics of Fluids, 2023
Bubbly turbulent flows involve complex interactions between bubbles and vortices, in which their size ratio plays a critical role. The present work investigates an idealization, namely, the interaction of a single air bubble with a (water) vortex ring, with the focus being on the effects of the bubble-to-vortex core size ratio (Db/Dc,o) on the bubble ...
Subhajit Biswas, Raghuraman N. Govardhan
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An introduction to bubble dynamics

Physical Chemistry Chemical Physics, 2007
The creation, understanding and control of mesoscopic chemical objects are at the core of many areas of chemistry and physics. Their preparation depends on a variety of nucleation and aggregation processes and they are exploitable for practical purposes, including fabrication techniques. At the opposite end, are cavitation phenomena.
LUGLI, FRANCESCA, ZERBETTO, FRANCESCO
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Cardiovascular Bubble Dynamics

Critical Reviews in Biomedical Engineering, 2005
Gas bubbles can form in the cardiovascular system as a result of patho-physiological conditions or can be intentionally introduced for diagnostic or therapeutic reasons. The dynamic behavior of these bubbles is caused by a variety of mechanisms, such as inertia, pressure, interfacial tension, viscosity, and gravity.
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Symmetry in bubble dynamics

Communications in Nonlinear Science and Numerical Simulation, 2004
This work reviews the study of the symmetry approach in bubble dynamics and its applications to nonlinear acoustics. Point symmetries of the respective model equations are used to study the dynamics of single bubble pulsations, tethered bubbles and the distribution of coagulating bubbles.
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Bubble Dynamics for Single Bubble Sonoluminescence

Journal of the Physical Society of Japan, 2001
Problems involved in the bubble dynamics models which have been suggested to explain the sonoluminesence phenomena from a single bubble under ultrasound were discussed. One of the problems is proper choice of the time scale of the driving force, which is related to numerical artifacts due to the mismatch between the natural frequency of an oscillator ...
Ho-Young Kwak, Joong-Yeob Lee, Sarng Woo Karng   +2 more
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Bubble and bubble cloud dynamics

AIP Conference Proceedings, 2000
Cavitation bubbles are formed from small air bubbles, so-called nuclei, with the surrounding pressure reduction caused by the flow, and then, the bubbles shrink and collapse with the surrounding pressure rise. Such volumetric changes of bubbles are calculated in detail and it is found that they are significantly influenced by the internal phenomena ...
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The dynamics of the aspheric encapsulated bubble

The Journal of the Acoustical Society of America, 2013
Based on hydrodynamics and elastic mechanics, a model is proposed for the aspheric encapsulated bubble (AEB) in liquid driven by a spherical ultrasound. The aspheric component of the bubble surfaces includes any complicated shape as a perturbation of the spherical symmetry. For example, the simple ovoid encapsulated bubble is studied numerically in the
Weihang, Shao, Weizhong, Chen
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Dynamics of gas bubbles in monolayers

Physical Review A, 1990
We present a study of the temporal evolution of a two-dimensional bubble pattern in the liquid-gas coexistence region of monolayers. Using fluorescence microscopy of pentadecanoic acid or dipalmitoyl phosphotidylcholine on the surface of water, we study the coarsening of the pattern for several days.
, Berge, , Simon, , Libchaber
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Dynamics of two-dimensional bubbles

Physical Review E, 2015
The dynamics of two-dimensional bubbles ascending under the influence of buoyant forces is numerically studied with a one-fluid model coupled with the front-tracking technique. The bubble dynamics are described by recording the position, shape, and orientation of the bubbles as functions of time.
Saúl, Piedra, Eduardo, Ramos, J Ramón, Herrera   +2 more
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Dynamics of bubbles in general relativity

Physical Review D, 1987
This is a systematic study of the evolution of thin shell bubbles in general relativity. We develop the general thin-wall formalism first elaborated by Israel and apply it to the investigation of the motion of various bubbles arising in the course of phase transitions in the very early Universe including new phase bubbles, old phase remnants, and ...
, Berezin, , Kuzmin, , Tkachev
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