Pillar height regulated droplet impact dynamics on pillared superhydrophobic surfaces

International Journal of Mechanical Sciences, Journal Year: 2024, Volume and Issue: 276, P. 109386 - 109386

Published: May 13, 2024

Language: Английский

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Droplets impact on sparse microgrooved non-wetting surfaces

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Jan. 23, 2025

Language: Английский

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Droplet impact dynamics on different wettable surfaces at moderate Weber numbers

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2024, Volume and Issue: 695, P. 134250 - 134250

Published: May 12, 2024

Language: Английский

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Droplet impact on rotating surfaces: The effect of centrifugal force and wettability on spreading dynamics

Physical Review Fluids, Journal Year: 2024, Volume and Issue: 9(8)

Published: Aug. 19, 2024

Droplet impacting on rotating surface experiences the tangential shear force from surface, generating a centrifugal that either enhances spreading or destabilizes expanding lamella. In this study, we experimentally characterize of droplets with wide range viscosity surfaces various wettabilities, and theoretically analyze observed dynamics, including enhanced transition to destabilization We propose simplified approach predict these key parameters, validate theoretical prediction by experimental measurement.

Language: Английский

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The droplet dynamics of asymmetrical impingement on moving ridged surface

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 684, P. 309 - 318

Published: Jan. 7, 2025

Language: Английский

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Morphology and wetting characteristics of micrometer-sized droplets impacting rough wall surfaces

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(2)

Published: Feb. 1, 2025

Droplet impact on rough walls is a prevalent phenomenon in engineering applications, including surface spraying and spray wetting, understanding the morphology wetting characteristics of such impacts crucial for industrial processes. This study utilizes computational fluid dynamics to examine effects velocity, tension, their interactions behavior micrometer-sized droplets impacting walls. The findings reveal five morphological changes during droplet impact: oscillation, rebound, bubble formation/rebound, tearing/bubble rupture/localized rebound. Droplets with lower tension are more likely rebound low-speed compared those higher tension. Surface has minimal influence spreading at initial stage but significantly affects retraction prior liquid reaching its residual diameter after impact. Lowering increasing velocity intensify enhance performance wall surfaces. interaction between influences droplet's behavior, as increased reduces enhancement caused by while decreases disparity minimum height values varying tensions. analysis provides valuable insights applications involving interacting surfaces practices.

Language: Английский

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Dynamic characteristics and energy variation of droplet impacting on a quartz surface

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(2)

Published: Feb. 1, 2025

Understanding the impact process of droplets on surfaces is a crucial prerequisite for enhancing efficiency wetting dust removal. The collision dynamics between water and quartz were investigated using high-speed camera, revealing four distinct stages in this process. During first three stages, there was an increase droplet width three-phase contact line over time, while height angle decreased. These observations can be attributed to combined effects impulsive force surface tension. With increasing velocity, duration prolonged, accompanied by both diameter during final stage, whereas decrease angle. This behavior primarily arises from energy transfer involving kinetic converted into energy, dissipated events. Contact exhibited upward trend with rising velocity. Simultaneously, collision-induced increased proportionally respect Notably, rate ratio demonstrated positive correlations Weber number; specifically following linear relationship characterized slope value 2.81. findings offer valuable insights advancing technology development related equipment used

Language: Английский

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Numerical investigation of drop spreading on a heated surface

Sustainable Chemistry for Climate Action, Journal Year: 2025, Volume and Issue: unknown, P. 100065 - 100065

Published: March 1, 2025

Language: Английский

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Effects of Size Ratio on Droplet Impact Dynamics at Microstructured Surfaces

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2025, Volume and Issue: unknown, P. 137195 - 137195

Published: May 1, 2025

Language: Английский

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Crater radius analysis after dual droplets successive oblique impact on liquid film

Surface and Interface Analysis, Journal Year: 2024, Volume and Issue: 56(7), P. 433 - 446

Published: March 3, 2024

Droplet impact is a common occurrence in nature, agriculture, and industry. The research on the multi‐droplet fundamental to understanding tangled nature of reality. This paper numerically studies successive oblique dual droplets liquid film by building an effective three‐dimensional model. leading trailing are set pass certain point with same velocity. main contribution this investigation effects Weber number, thickness, angle, time interval interface morphology evolution after droplet impact. Results show that splash pattern conversion primary or secondary crown occurs change these factors. Besides, variations maximum crater radius upstream, lateral, downstream directions quantitatively analyzed. analysis carried out from three perspectives, variation during single impact, comparison between them. It found exhibits shape distortion deformation period appears marked dimensional increase expansion period.

Language: Английский

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