The impact, freezing, and melting processes of a water droplet on an inclined cold surface

Jin, Zheyan; Sui, Dongyu; Yang, Zhigang

doi:10.1016/j.ijheatmasstransfer.2015.06.086

Cited by 76 publications

(44 citation statements)

References 54 publications

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“…The current experimental setup has been described in our previous studies [16,17]. The interested readers are referred to Refs.…”

Section: Methodsmentioning

confidence: 99%

“…The interested readers are referred to Refs. [16,17] for details. It should be noted that a quartz glass test plate (50.0 mm L Â 50.0 mm W Â 1.5 mm H) was used in the present study.…”

Section: Methodsmentioning

confidence: 99%

“…More recently, Ramachandran et al [15] studied the dynamics of droplets impacting the surface of hydrophobic concrete. Jin et al [16] investigated the effects of droplet size and surface temperature on the impact, freezing, and melting processes of a water droplet on an inclined red copper surface. Besides, Jin et al [17] droplet on different inclined cold surfaces.…”

Section: Introductionmentioning

confidence: 99%

“…Even though extensive researches have been performed on the impact process of water droplets on an inclined surface in previous studies [4][5][6][7][8][9][10][11][12][13][14][15][16][17], to the authors' best knowledge, the detailed impact process of a water droplet on a cold surface with different inclined angles has not yet been experimentally investigated. In this study, the impact and freezing processes of a water droplet on a cold surface with different inclined angles were carefully measured.…”

Section: Introductionmentioning

confidence: 99%

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The impact and freezing processes of a water droplet on a cold surface with different inclined angles

Jin

Zhang

Yang³

2016

International Journal of Heat and Mass Transfer

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“…The current experimental setup has been described in our previous studies [16,17]. The interested readers are referred to Refs.…”

Section: Methodsmentioning

confidence: 99%

“…The interested readers are referred to Refs. [16,17] for details. It should be noted that a quartz glass test plate (50.0 mm L Â 50.0 mm W Â 1.5 mm H) was used in the present study.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The impact and freezing processes of a water droplet on a cold surface with different inclined angles

Jin

Zhang

Yang³

2016

International Journal of Heat and Mass Transfer

Self Cite

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“…The drop freezing time, the contact angle, the diameter and height of the ice bead were strongly affected by both surface temperature and the initial height of the water drop. Some other experimental investigations on the water drop freezing process can be found in [5][6][7][8][9], but have not considered in detail the effects of the contact angle at the plate.…”

Section: Introductionmentioning

confidence: 99%

Direct Numerical Study of a Molten Metal Drop Solidifying on a Cold Plate with Different Wettability

Nguyen

Khanh

2018

Metals

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This paper presents a direct numerical simulation of solidification of a molten metal drop on a cold plate with various wettability by an axisymmetric front-tracking method. Because of the plate kept at a temperature below the fusion value of the melt, a thin solid layer forms at the plate and evolves upwards. The numerical results show that the solidifying front is almost flat except near the triple point with a high solidification rate at the beginning and final stages of solidification. Two solid-to-liquid density ratios ρ sl = 0.9 (volume change) and 1.0 (no change in volume), with two growth angles φ 0 = 0 • and 12 • are considered. The presence of volume change and a non-zero growth angle results in a solidified drop with a conical shape at the top. The focusing issue is the effects of the wettability of the plate in terms of the contact angle φ 0 . Increasing the contact angle in the range of 45 • to 120 • increases time for completing solidification, i.e., solidification time. However, it has a minor effect on the conical angle at the top of the solidified drop and the difference between the initial liquid and final solidified heights of the drop. The effects of the density ratio and growth angle are also presented.

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The Criterion of Supercooled Bionic Lotus Surfaces Repelling Impacting Droplets for Anti‐Icing Engineering

Zhu

Luo

et al. 2023

Adv Materials Inter

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impact on these surfaces can save a large part of initial energy in the pancake liquid film at maximum spread, [10][11][12] then go through a fast retraction [13][14] and bounce away from surfaces. This ability of repelling impacting droplets greatly shortens the contact time with surfaces [15][16][17][18] and allows droplets bounce away before freezing. [19][20] Since Mishchenko et al. first proposed to realize ice-free nanostructured surfaces by repelling impacting water droplets, [21] droplets impact and freezing on cold surfaces have been widely investigated. Compared with room temperature, the influence of supercooled surface on droplet impact mainly includes the droplet physical properties and droplet deposition behavior below bounce transition temperature. [22][23][24] Maitra et al. found that viscosity dissipation at low temperature reduces the droplet maximum spread, and the meniscus penetrates into surface texture results in a decrease of retraction velocity. [25] Zhang et al. suggested that it is the ice nucleation that causes droplet adhesion rather than viscosity, the contact of droplet with surface texture will result in a higher nucleation rate. [26] Kanta et al. developed total internal reflection technology and observed the solidification of droplets propagates continuously from the impact center to the edge of the liquid film on cold surfaces. [27] Zhu et al. summarized the four frozen droplet morphologies of different elliptical caps and rings on cold-inclined hydrophilic surfaces. [28] Although some progress has been achieved, the boundary between droplet bounce and deposition on superhydrophobic surface is not clear. Since nucleation in supercooled water droplets is a stochastic process and affected by temperature and local surface morphology, [29][30][31] single droplet behavior cannot get a stable result statistically.Moreover, most of the studies about droplet impact on cold surfaces are carried out under dry environment, [32][33] which are significantly different from freezing rain environment (0 to −5 °C, >50 RH%). Actually, the frosting and droplet impact freezing in freezing rain should not be studied separately. For example, condensation and desublimation from vapor changes the surface wettability and affects droplet impact dynamics, [34] while the freezing of supercooled droplets leads to the formation of ice bridge or frost halo and further promotes solidification propagating within the frost layer. [35][36] The lack of clear criterion for bionic superhydrophobic surface repelling impact Icephobic material is of great importance in power transportation, communication, aerospace, and so on. Bionic lotus superhydrophobic surfaces show good application prospects in anti-icing by repelling impacting droplets. However, the boundary (criterion) between droplet bounce and deposition on superhydrophobic surface under cold freezing rain is unclear. Here, from the view of statistics, the boundary and internal heat transfer mechanism of the droplet bounce, pinning, and three kinds of depositio...

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The impact, freezing, and melting processes of a water droplet on an inclined cold surface

Cited by 76 publications

References 54 publications

The impact and freezing processes of a water droplet on a cold surface with different inclined angles

The impact and freezing processes of a water droplet on a cold surface with different inclined angles

Direct Numerical Study of a Molten Metal Drop Solidifying on a Cold Plate with Different Wettability

The Criterion of Supercooled Bionic Lotus Surfaces Repelling Impacting Droplets for Anti‐Icing Engineering

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