High-speed impact of water droplets on microtextured surfaces: Effect of roughness and wettability on corona splashing
| Parent link: | Experimental Thermal and Fluid Science.— .— Amsterdam: Elsevier Science Publishing Company Inc. Vol. 171.— 2026.— Article number 111618, 15 p. |
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| Altres autors: | , , , , , , |
| Sumari: | Title screen A study of the high-speed impact of water droplets on smooth and microtextured fluoropolymer-coated titanium surfaces is presented. The experimental samples had an average roughness Ra from 0.04 μm to 15.4 μm and a static contact angle θ from 74° to 164°. The 0.5–1.3-mm droplets were impacted on the surfaces at velocities U0 = 5–20 m/s (the Weber number We = 450–2,800). Using a high-speed video camera with a sample rate of 60,000 frames per second, the values of the opening angle α, the maximum diameter Dcor, and the lifetime of the corona were measured and analyzed. In addition, the mean splashing velocities of both large and small secondary fragments were captured. A dimensionless ratio, α/θ, which characterizes the predominance of inertial or adhesive forces, was proposed for the development of an empirical model for predicting Dcor. This model was validated using data from other authors, which proved its applicability in the ranges of We = 450–2,800, Ra = 1.05–38 µm, θ = 69–164° (water) and θ 0° (ethanol). The research elucidated that superhydrophobic microtextured surfaces provide greater symmetry in corona splash and a larger opening angle. However, these surfaces also delayed liquid removal during splashing, which has the potential to impact the effectiveness of their water-repellent properties Текстовый файл AM_Agreement |
| Publicat: |
2026
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| Matèries: | |
| Accés en línia: | https://doi.org/10.1016/j.expthermflusci.2025.111618 |
| Format: | Electrònic Capítol de llibre |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=684366 |
MARC
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| 200 | 1 | |a High-speed impact of water droplets on microtextured surfaces: Effect of roughness and wettability on corona splashing |f Danila Verkhodanov, Nikita Khomutov, Maxim Piskunov [et al.] | |
| 203 | |a Текст |b визуальный |c электронный | ||
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| 300 | |a Title screen | ||
| 320 | |a References: 44 tit | ||
| 330 | |a A study of the high-speed impact of water droplets on smooth and microtextured fluoropolymer-coated titanium surfaces is presented. The experimental samples had an average roughness Ra from 0.04 μm to 15.4 μm and a static contact angle θ from 74° to 164°. The 0.5–1.3-mm droplets were impacted on the surfaces at velocities U0 = 5–20 m/s (the Weber number We = 450–2,800). Using a high-speed video camera with a sample rate of 60,000 frames per second, the values of the opening angle α, the maximum diameter Dcor, and the lifetime of the corona were measured and analyzed. In addition, the mean splashing velocities of both large and small secondary fragments were captured. A dimensionless ratio, α/θ, which characterizes the predominance of inertial or adhesive forces, was proposed for the development of an empirical model for predicting Dcor. This model was validated using data from other authors, which proved its applicability in the ranges of We = 450–2,800, Ra = 1.05–38 µm, θ = 69–164° (water) and θ 0° (ethanol). The research elucidated that superhydrophobic microtextured surfaces provide greater symmetry in corona splash and a larger opening angle. However, these surfaces also delayed liquid removal during splashing, which has the potential to impact the effectiveness of their water-repellent properties | ||
| 336 | |a Текстовый файл | ||
| 371 | 0 | |a AM_Agreement | |
| 461 | 1 | |t Experimental Thermal and Fluid Science |c Amsterdam |n Elsevier Science Publishing Company Inc. | |
| 463 | 1 | |t Vol. 171 |v Article number 111618, 15 p. |d 2026 | |
| 610 | 1 | |a Droplet-wall impact | |
| 610 | 1 | |a Superhydrophobic surface | |
| 610 | 1 | |a Surface roughness | |
| 610 | 1 | |a Corona splash | |
| 610 | 1 | |a Laser texturing | |
| 610 | 1 | |a Wettability | |
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 701 | 1 | |a Verkhodanov |b D. A. |g Danila Andreevich | |
| 701 | 1 | |a Khomutov |b N. A. |c specialist in the field of thermal power engineering and heat engineering |c research engineer at Tomsk Polytechnic University |f 1997- |g Nikita Andreevich |9 23010 | |
| 701 | 1 | |a Piskunov |b M. V. |c specialist in the field of thermal engineering |c engineer of Tomsk Polytechnic University |f 1991- |g Maksim Vladimirovich |9 17691 | |
| 701 | 1 | |a Vozhakov |b I. S. |g Ivan Sergeevich | |
| 701 | 1 | |a Starinsky |b S. V. |g Sergey Viktorovich | |
| 701 | 1 | |a Safonov |b A. I. |g Aleksey Ivanovich | |
| 701 | 1 | |a Smirnov |b N. I. |g Nikita Igorevich | |
| 801 | 0 | |a RU |b 63413507 |c 20260122 | |
| 850 | |a 63413507 | ||
| 856 | 4 | |u https://doi.org/10.1016/j.expthermflusci.2025.111618 |z https://doi.org/10.1016/j.expthermflusci.2025.111618 | |
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