Asymmetric solidification during droplet freezing in the presence of a neighboring droplet

Castillo, Julian E.; Huang, Yueting; Zhang, Pan; Weibel, Justin A.

doi:10.1016/j.ijheatmasstransfer.2021.121134

Cited by 11 publications

(3 citation statements)

References 43 publications

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“…Note that this model does not include any moving interfaces, such as how the ice dendrites formed in an earlier stage affect the subsequent vapor deposition, and thus the formation of local peaks and depletion zones cannot be described. Similar results have been obtained at the substrates with topological features instead of attached frozen drops [44][45][46][47], where the contribution of gravity is excluded. The role of gravity is quite clear in this work, i.e., it promotes the deposition when it occurs along with gravity, while it hinders or retards the deposition when it occurs against gravity.…”

Section: Resultssupporting

confidence: 83%

Ice Dendrite Growth Atop a Frozen Drop under Natural Convection Conditions

Huang

Zhao

2022

Crystals

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Condensation frosting is a type of icing encountered ubiquitously in our daily lives. Understanding the dynamics of condensation frosting is essential in developing effective technologies to suppress frost accretions that compromise heat transfer and system integrity. Here, we present an experimental study on ice dendrite growth atop a single frozen drop, an important step affecting the subsequent frosting process, and the properties of fully-developed frost layers. We evaluate the effect of natural convection by comparing the growth dynamics of ice dendrites on the surface of a frozen drop with three different orientations with respect to gravity. The results show that both the average deposition rate and its spatial variations are profoundly altered by surface orientations. Such behavior is confirmed by a numerical simulation, showing how gravity-assisted (hindered) vapor diffusion yields the deposition outcomes. These findings benefit the optimization of anti-/de- frosting technologies and the rational design of heat exchangers.

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Section: Resultssupporting

confidence: 83%

Ice Dendrite Growth Atop a Frozen Drop under Natural Convection Conditions

Huang

Zhao

2022

Crystals

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“…[27][28][29][30] In addition, the presence of a neighboring drop induces nonuniform cooling at the droplet-gas interface of a sessile drop, which may cause its asymmetrical solidification. 31 From these investigations, it is clear that even a little Droplet. 2023;2:e90.…”

Section: Introductionmentioning

confidence: 95%

“…Besides, if water vapor exists in the gaseous environmental medium, it may condense on the freezing drop surface and the released latent heat could affect the freezing front kinetics, the tip angle of a frozen drop, and even induce the growth of ice crystals at the drop tip 27–30 . In addition, the presence of a neighboring drop induces nonuniform cooling at the droplet–gas interface of a sessile drop, which may cause its asymmetrical solidification 31 . From these investigations, it is clear that even a little heat transfer from the surrounding medium can obviously affect the freezing dynamics of a sessile drop.…”

Section: Introductionmentioning

confidence: 99%

Liquid encapsulation in a freezing sessile drop

Lyu,

Zhu,

Legendre

et al. 2023

Droplet

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During the solidification of a sessile drop, the effect of heat exchange from the gaseous environmental medium is generally ignored. However, by combining experimental observations, direct numerical simulations, and a theoretical model, we have demonstrated that the environmental medium, particularly one with high thermal conductivity such as a liquid, has nonnegligible heat exchange with both the drop and the substrate, leading to accelerated cooling of the outer surface of the sessile drop. Consequently, it causes alterations in the geometry of the freezing front and ultimately results in the formation of a solidified shell that encloses the drop. Furthermore, the encapsulated liquid continues to solidify, which induces volume change and consequently changes the final outcome of the freezing process. This study highlights the importance of considering the properties of the environmental medium and provides novel strategies to manipulate the freezing rate and reshape the morphology of the solidified drop.

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A Numerical Study of Liquid Bridge Solidification

Vu,

Pham

2024

Lecture Notes in Mechanical Engineering

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Asymmetric solidification during droplet freezing in the presence of a neighboring droplet

Cited by 11 publications

References 43 publications

Ice Dendrite Growth Atop a Frozen Drop under Natural Convection Conditions

Ice Dendrite Growth Atop a Frozen Drop under Natural Convection Conditions

Liquid encapsulation in a freezing sessile drop

A Numerical Study of Liquid Bridge Solidification

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