Water-Droplet Impact and Sliding Behaviors on Slippery Surfaces with Various Weber Numbers and Surface Inclinations

Li, Bo; Fan, Lei; Bai, Jie; Xiang, Huiying; Yuan, Yuan

doi:10.3390/coatings13020264

Cited by 3 publications

(2 citation statements)

References 54 publications

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“…Additionally, the silicone oil with a viscosity of 200 cSt further improves the stability of the lubricant film while maintaining a certain slippery performance. Under impact environments, such as glaze icing test, low-viscosity silicone oils are easily replaced by water, , which leads to rapid loss of lubricant and poor anti-icing performance. However, the silicone oil with excessively high viscosity can weaken the water droplet mobility of the SLIPS.…”

Section: Resultsmentioning

confidence: 99%

“…Herein, the top view was used because the shape of the droplet can be better observed (the top view and the side view at the same position are compared in Figure S4). First, unlike the flat surface, 31,65 the spreading and retraction of the droplet on the conductor surface were asymmetric (Figure 8a). At 6.0 ms, the water in the axial (straight) direction retracted, while the water in the azimuthal (curved) direction continued to spread.…”

Section: Acs Appliedmentioning

confidence: 99%

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Anti-Icing Mechanism for a Novel Slippery Aluminum Stranded Conductor

Xiang

Yuan

Zhu

et al. 2023

ACS Appl. Mater. Interfaces

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The icing of transmission conductor seriously threatens the safe operation of power grids. Slippery lubricant-infused porous surface (SLIPS) has shown great potential for anti-icing applications. However, aluminum stranded conductors have complex surfaces, and the current SLIPSs are almost prepared and studied on small flat plates. Herein, the construction of SLIPS on the conductor was realized through anodic oxidation and the anti-icing mechanism of the slippery conductor was studied. Compared to the untreated conductor, the SLIPS-conductor reduces the icing weight by 77% in the glaze icing test and shows very low ice-adhesion strength (7.0 kPa). The excellent anti-icing performance of the slippery conductor is attributed to the droplet impact dynamics, icing delay, and lubricant stability. The dynamic behavior of water droplets is most affected by the complex shape of the conductor surface. Specifically, the impact of the droplet on the conductor surface is asymmetric and the droplet can slide along the depression in low-temperature and high-humidity environments. The stable lubricant of SLIPS increases both the nucleation energy barriers and the heat transfer resistance, which greatly delays the freezing time of droplets. Besides, the nanoporous substrate, the compatibility of the substrate with the lubricant, and the lubricant characteristics contribute to the lubricant stability. This work provides theoretical and experimental guidance on anti-icing strategies for transmission lines.

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Section: Resultsmentioning

confidence: 99%

Section: Acs Appliedmentioning

confidence: 99%

Anti-Icing Mechanism for a Novel Slippery Aluminum Stranded Conductor

Xiang

Yuan

Zhu

et al. 2023

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

show abstract

Analytical and numerical investigation of successive metallic alloy droplets impacting onto a surface: Regime maps and scaling laws based on energy analysis

Sharifi

2025

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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The Spreading Characteristics of Droplets Impacting Wheat Leaves Based on the VOF Model

et al. 2023

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Given the problem that droplets cannot stay on the surfaces of leaves and wet them effectively, resulting in high levels of pesticide input and environmental pollution, this work studied the dynamic behaviors of droplets with different diameters (400–550 um) falling on the surfaces of wheat leaves from different heights (2–16 cm) using contact angle-measuring instruments and a high-speed camera. The VOF method in Fluent software was used to establish a numerical model of droplets impacting the surfaces of wheat leaves. The results show that with an increase in the initial diameter and initial velocity of a droplet, the maximum diameter of the droplet during the spreading process also gradually increases. After a droplet impacts a wheat leaf, the droplet-spreading diameter first increases and then decreases. The maximum droplet spreading rate, βmax, increases with an increase in the Weber number, βmax ∈We14, which is consistent with the existing theory. The results of this study lay a foundation for studying the spread of droplets on the surfaces of leaves, which is conducive to improving the rate of pesticide utilization.

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Water-Droplet Impact and Sliding Behaviors on Slippery Surfaces with Various Weber Numbers and Surface Inclinations

Cited by 3 publications

References 54 publications

Anti-Icing Mechanism for a Novel Slippery Aluminum Stranded Conductor

Anti-Icing Mechanism for a Novel Slippery Aluminum Stranded Conductor

Analytical and numerical investigation of successive metallic alloy droplets impacting onto a surface: Regime maps and scaling laws based on energy analysis

The Spreading Characteristics of Droplets Impacting Wheat Leaves Based on the VOF Model

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