Freezing-damped impact of a water drop

Thiévenaz, Virgile; Séon, Thomas; Josserand, Christophe

doi:10.1209/0295-5075/132/24002

Cited by 26 publications

(22 citation statements)

References 31 publications

(64 reference statements)

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“…As time goes (0.29 ms < t < 1 ms) the size of the ejected droplets increases, a consequence of the increase of the corolla thickness [12,15]. In this experiment, after about 1 ms, the corolla is totally fragmented and all the liquid flows in contact with the solid, following a classical spreading on a cold substrate [8]. From these two timesequences, we can readily see that for a constant velocity the splash depends on the substrate temperature.…”

mentioning

confidence: 78%

“…Initially motivated by its consequences in metallurgy, the sensibility of splashing to solidification has been first investigated twenty years ago, [4,5], evidencing an enhancement of splash due to solidification, a phenomenon that was confirmed in recent times [6]. While several other studies focused on the solidification dynamics of drops impinging a cold substrate [7][8][9][10], the enhancement of splashing due to solidification is still puzzling and poorly characterised.…”

mentioning

confidence: 99%

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Making superhydrophobic splashes by surface cooling

R.¹,

Huerre²,

Séon³

et al. 2022

Preprint

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mentioning

confidence: 78%

mentioning

confidence: 99%

Making superhydrophobic splashes by surface cooling

R.¹,

Huerre²,

Séon³

et al. 2022

Preprint

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“…This process is difficult to study experimentally and often requires the use of intrusive or sometimes destructive methods. Similarly, experimental studies on icing often provide partial measurements only (surface temperature for instance) even when they are made in controlled conditions [9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

A hybrid level-set / embedded boundary method applied to solidification-melt problems

Limare¹,

Popinet²,

Josserand³

et al. 2022

Preprint

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In this paper, we introduce a novel way to represent the interface for two-phase flows with phase change. We combine a level-set method with a Cartesian embedded boundary method and take advantage of both. This is part of an effort to obtain a numerical strategy relying on Cartesian grids allowing the simulation of complex boundaries with possible change of topology while retaining a high-order representation of the gradients on the interface and the capability of properly applying boundary conditions on the interface. This leads to a two-fluid conservative second-order numerical method. The ability of the method to correctly solve Stefan problems, onset dendrite growth with and without anisotropy is demonstrated through a variety of test cases. Finally, we take advantage of the two-fluid representation to model a Rayleigh-Bénard instability with a melting boundary.

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“…The initial conditions of the droplet as well as the ambiant considition such as humidity [19] largely determine the subsequent process of the freezing kinetics. The supercooling [20] and impingment [8,[21][22][23] affect the freezing process by changing the initial properties and morphology of the droplet. Experiments [24,25] indicate that the drop size is a critical factor that influences the heat change efficiency in the freezing process.…”

Section: Introductionmentioning

confidence: 99%

How does gravity influence freezing dynamics of drops on a solid surface

Zeng¹,

Lyu²,

Legendre³

et al. 2022

Preprint

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Water droplet freezing is a common phenomenon in our daily life. In both natural scenarios and industrial production, different surface inclinations bring distinctive deformation and freezing dynamics to frozen droplets. We explore the freezing of pendent and sessile droplets at different Bond number regimes. The effect of gravity on the droplet freezing process is analyzed by considering droplet morphology, freezing front dynamics, and freezing time. It is found that gravity can significantly influence droplet freezing processes via shaping the initial droplet, resulting in the flattening or elongation of pendent and sessile droplets, respectively. We show that the droplet initial geometry is the most important parameter and it completely controls the droplet freezing. Despite the significant difference in the initial droplet shape several remarkable similarities have been found for pendent and sessile droplets at small and large Bond numbers. The final height of a frozen droplet is found to be linearly proportional to its initial height. The time evolution of the ice-liquid-air contact line is found to reproduce the power-law t 0.5 , but noticeably faster than the Stefan 1-D icing front propagation. As a consequence, the time to freeze a droplet is faster than predicted by the Stefan model and it is found to be dependent on the initial droplet height and base radius through a simple power-law.

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Freezing-damped impact of a water drop

Cited by 26 publications

References 31 publications

Making superhydrophobic splashes by surface cooling

Making superhydrophobic splashes by surface cooling

A hybrid level-set / embedded boundary method applied to solidification-melt problems

How does gravity influence freezing dynamics of drops on a solid surface

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