Bubble and spherical air shell formation dynamics

Tufaile, Adriana Pedrosa Biscaia; Sartorelli, J. C.

doi:10.1103/physreve.66.056204

Cited by 39 publications

(30 citation statements)

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“…The same phenomena in airaqueous glycerol solution were reported by Tufaile and Sartorelli. 27 In their experiments, tiny bubbles, known as antibubbles, were produced after the coalescence of two bubbles in the period-2 bubbling regime at high gas flow rates. An antibubble is a shell of air surrounding a drop of liquid inside the liquid.…”

Section: Regimes Of Low Intermediate and High Weber Numbers (Gas Flomentioning

confidence: 99%

“…In most of the theoretical models 17,18,22,32,33,38 developed by these workers, the effect of the previously formed bubble on the growth of the bubble at the orifice were not taken into account, although Zhang and Shoji, 21 Chuang and Goldschmidt, 39 and Deshpande et al 40 developed models by taking into account the wake effect of the previous bubble or bubble coalescence. Depending on the operating parameters (gas flow rate, orifice diameter, surface wetting characteristics, and physical properties of the liquid phase), different regimes [19][20][21]23,26,27,41 are discerned as period-1, period-2 with pairing or double coalescence (see below), period-3 (triple coalescence), period-4 (quadruple coalescence), and finally chaotic bubbling regimes. 42 Most importantly, Higuera and Medina 35 reported that the period-2 regime consists of the pairing regime 20,21,23 and the double coalescence regime.…”

Section: Introductionmentioning

confidence: 99%

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Bubble formation and dynamics in a quiescent high‐density liquid

et al. 2015

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Gas bubble formation from a submerged orifice under constant-flow conditions in a quiescent high-density liquid metal, lead-bismuth eutectic (LBE), at high Reynolds numbers was investigated numerically. The numerical simulation was carried out using a coupled level-set and volume-of-fluid method governed by axisymmetric Navier-Stokes equations. The ratio of liquid density to gas density for the system of interest was about 15,261. The bubble formation regimes varied from quasi-static to inertia-dominated and the different bubbling regimes such as period-1 and period-2 with pairing and coalescence were described. The volume of the detached bubble was evaluated for various Weber numbers, We, at a given Bond number, Bo, with Reynolds number Re ) 1. It was found that at high values of the Weber number, the computed detached bubble volumes approached a 3/5 power law. The different bubbling regimes were identified quantitatively from the time evolution of the growing bubble volume at the orifice. It was shown that the growing volume of two consecutive bubbles in the period-2 bubbling regime was not the same whereas it was the same for the period-1 bubbling regime. The influence of grid resolution on the transition from period-1 to period-2 with pairing and coalescence bubbling regimes was investigated. It was observed that the transition is extremely sensitive to the grid size. The transition of period-1 and period-2 with pairing and coalescence is shown on a Weber-Bond numbers map. The critical value of Weber number signalling the transition from period-1 to period-2 with pairing and coalescence decreases with Bond number as We $ Bo 21 , which is shown to be consistent with the scaling arguments. Furthermore, comparisons of the dynamics of bubble formation and bubble coalescence in LBE and water systems are discussed. It was found that in a high Reynolds number bubble formation regime, a difference exists in the transition from period-1 to period-2 with pairing and coalescence between the bubbles formed in water and the bubbles formed in LBE. V C 2015 American Institute of Chemical Engineers AIChE J, 61: 3996-4012, 2015

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Section: Regimes Of Low Intermediate and High Weber Numbers (Gas Flomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bubble formation and dynamics in a quiescent high‐density liquid

et al. 2015

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“…The Plateau number describes the relative contribution of the surface tension effects versus the centrifugal effects in a rotating drop. [271][272][273][274][275][276][277][278]. In practice, a large Plateau number indicates an almost spherical drop where the rotation effects can be neglected as compared with a stronger surface tension.…”

Section: Constantin Brâncusimentioning

confidence: 99%

“…There are three reasons why the 2D drop-like systems are now so widely studied: they lead to the greatest variety of patterns and waves on the free surface, they are relatively easy to handle theoretically, and experimental procedures are readily available [271][272][273][274][275][276][277][278]. The understanding of the formation, propagation, stability, bifurcation, breakup, and clustering of waves, patterns, and shapes on compact fluid boundaries of isolated drops are of fundamental importance in fluid dynamics problems, printing and painting technologies, and design in the medical and pharmaceutical industries.…”

Section: Leidenfrost Dropsmentioning

confidence: 99%

Boundaries of a Complex World

Ludu

2016

Springer Series in Synergetics

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Complexity is an interdisciplinary program publishing the best research and academic-level teaching on both fundamental and applied aspects of complex systemscutting across all traditional disciplines of the natural and life sciences, engineering, economics, medicine, neuroscience, social and computer science.Complex Systems are systems that comprise many interacting parts with the ability to generate a new quality of macroscopic collective behavior the manifestations of which are the spontaneous formation of distinctive temporal, spatial or functional structures. Models of such systems can be successfully mapped onto quite diverse "real-life" situations like the climate, the coherent emission of light from lasers, chemical reaction-diffusion systems, biological cellular networks, the dynamics of stock markets and of the internet, earthquake statistics and prediction, freeway traffic, the human brain, or the formation of opinions in social systems, to name just some of the popular applications.Although their scope and methodologies overlap somewhat, one can distinguish the following main concepts and tools: self-organization, nonlinear dynamics, synergetics, turbulence, dynamical systems, catastrophes, instabilities, stochastic processes, chaos, graphs and networks, cellular automata, adaptive systems, genetic algorithms and computational intelligence.The three major book publication platforms of the Springer Complexity program are the monograph series "Understanding Complex Systems" focusing on the various applications of complexity, the "Springer Series in Synergetics", which is devoted to the quantitative theoretical and methodological foundations, and the "SpringerBriefs in Complexity" which are concise and topical working reports, case-studies, surveys, essays and lecture notes of relevance to the field. In addition to the books in these two core series, the program also incorporates individual titles ranging from textbooks to major reference works.The Springer Series in Synergetics was founded by Herman Haken in 1977. Since then, the series has evolved into a substantial reference library for the quantitative, theoretical and methodological foundations of the science of complex systems.Through many enduring classic texts, such as Haken's Synergetics and Information and Self-Organization, Gardiner's Handbook of Stochastic Methods, Risken's The Fokker Planck-Equation or Haake's Quantum Signatures of Chaos, the series has made, and continues to make, important contributions to shaping the foundations of the field.The series publishes monographs and graduate-level textbooks of broad and general interest, with a pronounced emphasis on the physico-mathematical approach.More information about this series at

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“…They were coined "antibubbles" in the 1970s [11]. Only a few works [1][2][3][12][13][14] have been devoted to a quantitative study of antibubbles. They are mainly focussed on either the formation of antibubbles or the stability of such objects.…”

Section: Antibubblesmentioning

confidence: 99%

Antibubbles, liquid onions and bouncing droplets

Vandewalle

Terwagne

Gilet

et al. 2009

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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a b s t r a c tIn this paper, we emphasize our long series of experiments proving that the physical processes along fluid interfaces can be exploited for creating unusual fluidic objects. We report for the first time a couple of new fluidic objects so-called "liquid onions" and "mayonnaise" droplets. The study starts from the observation of antibubbles, exhibiting unstable liquid-air-liquid interfaces. We show that the lifetime of such a system has the same origin as floating/coalescing droplets on liquid surfaces. By analyzing such behaviours, we created droplets bouncing on a liquid bath. The methods and physical phenomena collected in this paper provide a basis for the development of a discrete microfluidics. Open questions are underlined, experimental challenges and future applications are proposed.

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Bubble and spherical air shell formation dynamics

Cited by 39 publications

References 8 publications

Bubble formation and dynamics in a quiescent high‐density liquid

Bubble formation and dynamics in a quiescent high‐density liquid

Boundaries of a Complex World

Antibubbles, liquid onions and bouncing droplets

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