Understanding of head-on coalescence of binary drops onto a cylindrical target

Sahoo, Prakasha Chandra; Senapati, Jnana Ranjan; Rana, Basanta Kumar

doi:10.1016/j.ces.2024.119886

Chemical Engineering Science

2024

DOI: 10.1016/j.ces.2024.119886

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Understanding of head-on coalescence of binary drops onto a cylindrical target

Prakasha Chandra Sahoo,

Jnana Ranjan Senapati,

Basanta Kumar Rana

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2024

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Cited by 3 publications

References 61 publications

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Mechanism of collision and drainage of liquid droplet around sphere placed within a hollow cylinder

Sahoo,

Senapati,

Rana

2024

Computers & Fluids

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Mechanism of collision and drainage of liquid droplet around sphere placed within a hollow cylinder

Sahoo,

Senapati,

Rana

2024

Computers & Fluids

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Mixed convection flows from a revolving cylindrical cavity

Shah,

Rana

2024

Numerical Heat Transfer, Part A: Applications

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Influence of a Pair of Unequal Rotational Fluxes on Entrained Gaseous Filament

Panda,

Rana

2024

Journal of Fluids Engineering

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Efforts are made to elucidate a comprehensive analysis of entrainment dynamics triggered by a couple of unequal rotational fluxes within a viscous pool. Cylindrical rollers are employed to establish the rotational field. The top drum is equally submerged in both phases and also it provides a constant rotational inertia. Concomitantly, the bottom roller is completely submerged in the viscous bath, and it provides an unequal rotational strength in reference to top roller. The average rotational strength of both rollers is measured using average Capillary number (Ca)avg. The entrainment phenomenon is strongly influenced by both Caavg and gap between the rollers (W/D). Characterization of entrained filament is elucidated by predicting the horizontal distance (L*), radial distance (r*), temporal vertical displacement (Y*), maximum vertical displacement (Ymax*), width (H*), and location of V-shaped diversion (∅s*). Characterization of liquid tip is performed by measuring the travel rate (Y*) along periphery of drum from receding to advancing junction. Air mass ejection from filament tip is analysed by estimating the 1st bubble ejection time (t1st*), volume of accumulated of ejected gaseous masses (v*), and ejection frequency (f). Furthermore, the effect of gravitational pull (specified by Archimedes number, Ar) and viscous drag (measured by Morton number, Mo) on the pattern of entrained air filament is described. Lastly, an analytical framework is established to determine the width of the V-junction by balancing the important influencing forces, which are strongly affecting the filament. Analytical observations show a satisfactory agreement with numerical findings.

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Understanding of head-on coalescence of binary drops onto a cylindrical target

Cited by 3 publications

References 61 publications

Mechanism of collision and drainage of liquid droplet around sphere placed within a hollow cylinder

Mechanism of collision and drainage of liquid droplet around sphere placed within a hollow cylinder

Mixed convection flows from a revolving cylindrical cavity

Influence of a Pair of Unequal Rotational Fluxes on Entrained Gaseous Filament

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