Dynamics of two-phase bubble-droplets in immiscible liquids

Mokhtarzadeh‐Dehghan, M.R.; El-Shirbini, A. A.

doi:10.1007/bf01682547

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…Under the influence of gravity, a bubble has a tendency to float upwards while a droplet sinks against the surrounding fluid. Bubbles and droplets have been studied separately (for example, see Shew & Pinton 2006; Gaudron, Warnez & Johnsen 2015; Dollet, Marmottant & Garbin 2019 for bubbles and Dwyer 1989; Cristini & Tan 2004; Zhu, Sui & Djilali 2008; Leong & Le 2020 for drops) and both together (Mokhtarzadeh-Dehghan & El-Shirbini 1985; Chen et al. 2008; Tabor et al.…”

Section: Introductionmentioning

confidence: 99%

A numerical study of gravity-driven instability in strongly coupled dusty plasma. Part 2. Hetero-interactions between a rising bubble and a falling droplet

Dharodi

2021

J. Plasma Phys.

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In part 1 (V. S. Dharodi and A. Das, J. Plasma Phys. 87 (02), 905870216 (2021)), we simulated the individual dynamics of a bubble (a localized low-density region) and a droplet (a localized high-density region) in a strongly coupled dusty plasma. We observed that under the influence of gravity, the result of a pair of counter-rotating vorticity lobes causes the bubble to rise and droplet to fall. With an interest to understand the hetero- (bubble–droplet) interactions between them, we extend this study to their combined evolution through the following two arrangements. First, both are placed side-by-side in a row at the same height. We observe that the overall dynamics is governed by the competition between the net vertical motion induced by gravity and rotational motion induced by the pairing between two co-rotating inner vorticity lobes. In the second arrangement, the vertically aligned bubble (below) and droplet (above) after collision exchange their partners and subsequently start to move horizontally in opposite directions away from each other. This horizontal movement becomes slower with increasing coupling strength. For these arrangements, we consider varying the distance between the fixed-size bubble and droplet, and varying the coupling strength. To visualize the bubble–droplet interactions, a series of two-dimensional simulations have been conducted in the framework of an incompressible generalized hydrodynamic viscoelastic fluid model.

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“…Under the influence of gravity, a bubble has a tendency to float upwards while a droplet sinks against the surrounding fluid. Bubbles and droplets have been studied separately (for example, see Shew & Pinton 2006; Gaudron, Warnez & Johnsen 2015; Dollet, Marmottant & Garbin 2019 for bubbles and Dwyer 1989; Cristini & Tan 2004; Zhu, Sui & Djilali 2008; Leong & Le 2020 for drops) and both together (Mokhtarzadeh-Dehghan & El-Shirbini 1985; Chen et al. 2008; Tabor et al.…”

Section: Introductionmentioning

confidence: 99%

A numerical study of gravity-driven instability in strongly coupled dusty plasma. Part 2. Hetero-interactions between a rising bubble and a falling droplet

Dharodi

2021

J. Plasma Phys.

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“…Under the influence of gravity, a bubble has a tendency to float upwards while a droplet sinks against the surrounding fluid. Bubbles and droplets have been studied separately, for example see [5][6][7] for bubbles and see [8][9][10][11] for drops, and both together [12][13][14] as well. The knowledge of the interaction of gas bubbles and liquid droplets with themselves or with particles or with a colloid probe is desired for a wide range of applications, including the manufacturing of cosmetics and pharmaceuticals, oil recovery 15 , printing and deinking, emulsion stability 16 , foodstuffs such as ice cream and mousse 17 , and in mineral flotation 18,19 , among many other applications.…”

Section: Introductionmentioning

confidence: 99%

A numerical study of gravity-driven instability in strongly coupled dusty plasma. Part 2: Hetero-interactions between a rising bubble and a falling droplet

Dharodi1¹

2021

Preprint

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Evaporation of single liquid drops in an immiscible liquid at elevated pressures: equipment and preliminary results

Shimizu

Mori

2004

Experiments in Fluids

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Abstract. This paper describes a piece of equipment which has been specially designed to permit the study of the evaporation of single liquid drops in an immiscible liquid at elevated pressures up to the order of 1 MPa. It is equipped with a piezoelectric discharger for yielding nucleation in each drop and with a dilatometer for detecting the change in volume of the drop in the course of evaporation succeeding the nucleation. Some preliminary results, obtained with the equipment, for n-pentane drops evaporating in a water medium at pressures up to 0.5 MPa (5 atm) are also presented. List of symbols CD

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Dynamics of two-phase bubble-droplets in immiscible liquids

Cited by 3 publications

References 13 publications

A numerical study of gravity-driven instability in strongly coupled dusty plasma. Part 2. Hetero-interactions between a rising bubble and a falling droplet

A numerical study of gravity-driven instability in strongly coupled dusty plasma. Part 2. Hetero-interactions between a rising bubble and a falling droplet

A numerical study of gravity-driven instability in strongly coupled dusty plasma. Part 2: Hetero-interactions between a rising bubble and a falling droplet

Evaporation of single liquid drops in an immiscible liquid at elevated pressures: equipment and preliminary results

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