Influence of the Metal Surface Texture on the Possibility of Controlling the Phase Transition of Water Droplets in the Single-Phase Regime; Applied Sciences; Vol. 12, iss. 23

Influence of the Metal Surface Texture on the Possibility of Controlling the Phase Transition of Water Droplets in the Single-Phase Regime; Applied Sciences; Vol. 12, iss. 23

Dettagli Bibliografici
Parent link:Applied Sciences
Vol. 12, iss. 23.— 2022.— [12155, 17 p.]
Enti autori: Национальный исследовательский Томский политехнический университет Инженерная школа энергетики Научно-образовательный центр И. Н. Бутакова (НОЦ И. Н. Бутакова), Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Altri autori: Glushkov D. O. Dmitry Olegovich, Orlova E. G. Evgeniya Georgievna, Islamova A. G. Anastasiya Gomilievna, Nikitin D. S. Dmitry Sergeevich, Lyulin Yu. V. Yury Vyacheslavovich, Feoktistov D. V. Dmitriy Vladimirovich
Riassunto:Title screen
We experimentally studied the influence of the texture of copper and steel surfaces on the possibility of controlling the phase transition of water droplets in the single-phase regime. The texture of metals was formed by polishing and grinding, which corresponded to the finishing treatment of heat transfer surfaces in cooling systems for energy-saturated equipment. The samples were studied by microscopy and profilometry. The texture was estimated by three-dimensional roughness parameters. It was found that, with a 2–2.5-fold increase in roughness, the wetting of copper deteriorates (the contact angle increases from 66° to 93°), whereas the wetting of steel improves (the contact angle decreases from 89° to 71°). It was experimentally proven that, among the two main factors that affect the spreading diameter (wetting and roughness), wetting is the most significant. A hypothesis was formulated regarding the reason for the increase in the contact angle of 7–10° and the drop in the decrease rate of the contact diameter during the transition from the pinning to the mixed stage of droplet evaporation. It was found that an increase in the surface area of 0.1% leads to an increase in the total droplet evaporation rate of 4–6.5%.
Lingua:inglese
Pubblicazione: 2022
Soggetti:
электронный ресурс
труды учёных ТПУ
wetting
evaporation time
evaporation rate
roughness
texture
смачивание
время
испарение
скорость
шероховатости
текстура
Accesso online:http://earchive.tpu.ru/handle/11683/74786
https://doi.org/10.3390/app122312155
Natura: Elettronico Capitolo di libro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=668594

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