Bubble Formation From an Orifice Submerged in Liquids

Tsuge, Hideki; Hibino, Shin-ichi

doi:10.1080/00986448308940046

Cited by 87 publications

(49 citation statements)

References 23 publications

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“…and Kuloor, 1970;Tsuge and Hibino, 1983 . When N is c smaller than 1, the gas flow rate through the orifice is constant, which is characterized as constant flow conditions.…”

Section: Introductionmentioning

confidence: 99%

Bubble formation in high‐pressure liquid–solid suspensions with plenum pressure fluctuation

et al. 2000

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“…and Kuloor, 1970;Tsuge and Hibino, 1983 . When N is c smaller than 1, the gas flow rate through the orifice is constant, which is characterized as constant flow conditions.…”

Section: Introductionmentioning

confidence: 99%

Bubble formation in high‐pressure liquid–solid suspensions with plenum pressure fluctuation

et al. 2000

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“…The departure bubble volume was found to be independent of the chamber volume when its value and the gas flow rates were small [71][72]. Similarly, the departure bubble volume was observed to increase with the capacitance number, c N , and gas flow rate of gas flow rate [73].…”

Section: Dynamics Of Bubble Growthmentioning

confidence: 99%

Modification of the Young–Laplace equation and prediction of bubble interface in the presence of nanoparticles

Vafaei

Wen

2015

Advances in Colloid and Interface Science

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Abstract:Bubbles are fundamental to our daily life and have wide applications such as in the chemical and petrochemical industry, pharmaceutical engineering, mineral processing and colloids engineering. This paper reviews the existing theoretical and experimental bubble studies, with a special focus on the dynamics of triple line and the influence of nanoparticles on the bubble growth and departure process. Nanoparticles are found to influence significantly the effective interfacial properties and the dynamics of triple line, whose effects are dependent on the particle morphology and their interaction with the substrate. While the Young-Laplace equation is widely applied to predict the bubble shape, its application is limited under highly non-equilibrium conditions. Using gold nanoparticle as an example, new experimental study is conducted to reveal the particle concentration influence on the behaviour of triple line and bubble dynamics. A new method is developed to predict the bubble shape when the interfacial equilibrium conditions cannot be met, such as during the oscillation period. The method is used to calculate the pressure difference between the gas and liquid phase, which is shown to oscillate across the liquid-gas interface and is responsible for the interface fluctuation. The comparison of the theoretical study with the experimental data shows a very good agreement, which suggests its potential application to predict bubble shape during non-equilibrium conditions.

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“…To justify the accuracy of our numerical code, computations were carried out to determine the volume of detached bubbles in argon-liquid aluminum, where the liquid density and surface tension are q l ¼ 2373 kg=m 3 28), with an error of 1:06%. The discrepancy between our results and the results in Refs.…”

Section: Grid Independence Test and Validationmentioning

confidence: 99%

“…[1][2][3][4] Applications of gas bubble generation in high-density liquid metals include the operation of liquid metal circulation in metallurgical 5 and nuclear power systems. 6,7 In nuclear power systems, 6,7 the liquid metal leadbismuth eutectic (LBE) is preferred as the target system taking into account the high production rate of neutrons, effective self-circulating heat removal, and minimal radiation damage.…”

Section: Introductionmentioning

confidence: 99%

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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Bubble Formation From an Orifice Submerged in Liquids

Cited by 87 publications

References 23 publications

Bubble formation in high‐pressure liquid–solid suspensions with plenum pressure fluctuation

Bubble formation in high‐pressure liquid–solid suspensions with plenum pressure fluctuation

Modification of the Young–Laplace equation and prediction of bubble interface in the presence of nanoparticles

Bubble formation and dynamics in a quiescent high‐density liquid

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