The Motion of Single Gas Bubbles Rising in Various Liquids

Tsuge, Hideki; Hibino, Shin-ichi

doi:10.1252/kakoronbunshu1953.35.65

Cited by 20 publications

(9 citation statements)

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“…The trajectory of rising meteorological balloons is similar to that of a rising solid sphere in liquid (Karamanev and Nikolov, 1992). Moreover, the trajectory of rising spherical and ellipsoidal gas bubbles at higher Reynolds numbers is also identical (Tsuge and Hibino, 1971). It shows that similarities can be expected in the behavior of gas bubbles and light solid particles.…”

mentioning

confidence: 58%

Rise of gas bubbles in quiescent liquids

Karamanev

1994

AIChE Journal

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mentioning

confidence: 58%

Rise of gas bubbles in quiescent liquids

Karamanev

1994

AIChE Journal

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“…All the simulation results, including the least contaminated case, are in very good agreement with this estimated velocity at quasi-steady state. For completeness, also the frequency of the horizontal velocity and the vortex shedding from the rear part of a rigid sphere are computed as reported in [45] from [49] and [28], respectively, 10 and compared to the simulation results. From table 5 it can be seen that the oscillation frequencies of the vertical velocity are approximately twice the horizontal ones, as expected from [45,38,12].…”

Section: 5mentioning

confidence: 99%

“…Table 5. Oscillation frequencies of the velocity components compared to the frequencies f and f v reported in [45] from [49] and [28], respectively. 10 The frequency of the bubble horizontal velocity is computed according to [49] as f = u b de 0.1c 0.734 D , where u b is the averaged quasi-steady velocity and de is the bubble equivalent diameter.…”

Section: 5mentioning

confidence: 99%

“…Oscillation frequencies of the velocity components compared to the frequencies f and f v reported in [45] from [49] and [28], respectively. 10 The frequency of the bubble horizontal velocity is computed according to [49] as f = u b de 0.1c 0.734 D , where u b is the averaged quasi-steady velocity and de is the bubble equivalent diameter. The frequency of the vortex shedding from the rear part of a rigid sphere is fv = ων l Re πd 2 e (from [28]), where ω is taken equal to 0.30 as in [45,28] and Re is computed based on u b .…”

Section: 5mentioning

confidence: 99%

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Computational analysis of single rising bubbles influenced by soluble surfactant

et al. 2018

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This paper presents novel insights about the influence of soluble surfactants on bubble flows obtained by Direct Numerical Simulation (DNS). Surfactants are amphiphilic compounds which accumulate at fluid interfaces and significantly modify the respective interfacial properties, influencing also the overall dynamics of the flow. With the aid of DNS local quantities like the surfactant distribution on the bubble surface can be accessed for a better understanding of the physical phenomena occurring close to the interface. The core part of the physical model consists in the description of the surfactant transport in the bulk and on the deformable interface. The solution procedure is based on an Arbitrary Lagrangian-Eulerian (ALE) Interface-Tracking method. The existing methodology was enhanced to describe a wider range of physical phenomena. A subgridscale (SGS) model is employed in the cases where a fully resolved DNS for the species transport is not feasible due to high mesh resolution requirements and, therefore, high computational costs. After an exhaustive validation of the latest numerical developments, the DNS of single rising bubbles in contaminated solutions is compared to experimental results. The full velocity transients of the rising bubbles, especially the contaminated ones, are correctly reproduced by the DNS. The simulation results are then studied to gain a better understanding of the local bubble dynamics under the effect of soluble surfactant. One of the main insights is that the quasi-steady state of the rise velocity is reached without ad-and desorption being necessarily in local equilibrium.

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“…Dewsbury [16] et al studied the terminal velocity of bubbles in a non-Newtonian fluid. Tsuge and Hibine [17] found that the trajectories of spherical and ellipsoidal bubbles are the same in a flow of high Reynolds number.…”

Section: Introductionmentioning

confidence: 99%

Research into the characteristics of horizontal gaseous jets underwater

Tang¹,

Li²

2016

J. vibroeng.

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The gaseous jet of the solid rocket motor running under water is influenced by both gravity and buoyancy, which will have a significant influence on the flow field structure and thrust of the motor, especially in the initial period when vehicles are launching horizontally. The work in this paper consists of three parts: firstly, to understand the mechanism of the thrust oscillation characteristics and the jet structure of a solid rocket motor running under water, as affected by gravity and buoyancy, a 3-d numerical simulation using the volume of fluid (VOF) model was established. Compared with those results neglecting gravity and buoyancy, conclusions were obtained that the jet structure, considering gravity and buoyancy, are more consistent with the experimental results. Secondly, the principle of momentum was used to analyze the flow field structure and the thrust oscillating characteristics in the initial period of operation. Finally, after analyzing the density gradient along the axis of the motor, results indicated that the length of jets under the influence of gravity and buoyancy varies linearly and the slope of the line is related to the working conditions. Comparing the trajectories under different conditions, a common theme emerged. The laws of thermodynamics are also used to simulate the jets as gas-water-vapor, threephase, systems. The effect of phase transitions on the structure of jets and the characteristics of their thrust form the key conclusions.

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The Motion of Single Gas Bubbles Rising in Various Liquids

Cited by 20 publications

References 0 publications

Rise of gas bubbles in quiescent liquids

Rise of gas bubbles in quiescent liquids

Computational analysis of single rising bubbles influenced by soluble surfactant

Research into the characteristics of horizontal gaseous jets underwater

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