{"title":"Effect of Surface Tension on Splashes of a Liquid during Drop Falling on a Rigid Obstacle","authors":"A. V. Bazilevskii, A. N. Rozhkov","doi":"10.1134/S001546282460490X","DOIUrl":null,"url":null,"abstract":"<p>The impacts of water and ethyl alcohol drops on a small metal disk whose diameter (4 mm) is only slightly greater than the drop diameter (2.8 mm) are studied. The drops fell from a height of 0.10–0.65 m and reached a velocity of 1.40–3.57 m/s before impact. Using high-speed video recording, various stages of the drop collisions with the obstacle were recorded. It is found that when going over from water to ethyl alcohol under the same impact conditions, a noticeable increase in the maximum splash diameter and the time it takes to reach it is observed. Observations also show that transition from a continuous splash to a splash with fragmentation is determined exclusively by the impact Weber number, whose critical value is of the order of 100. The previously established power-law dependence of the maximum splash diameter on the impact Weber number is confirmed.</p>","PeriodicalId":560,"journal":{"name":"Fluid Dynamics","volume":"60 2","pages":""},"PeriodicalIF":1.0000,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fluid Dynamics","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1134/S001546282460490X","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MECHANICS","Score":null,"Total":0}
引用次数: 0
Abstract
The impacts of water and ethyl alcohol drops on a small metal disk whose diameter (4 mm) is only slightly greater than the drop diameter (2.8 mm) are studied. The drops fell from a height of 0.10–0.65 m and reached a velocity of 1.40–3.57 m/s before impact. Using high-speed video recording, various stages of the drop collisions with the obstacle were recorded. It is found that when going over from water to ethyl alcohol under the same impact conditions, a noticeable increase in the maximum splash diameter and the time it takes to reach it is observed. Observations also show that transition from a continuous splash to a splash with fragmentation is determined exclusively by the impact Weber number, whose critical value is of the order of 100. The previously established power-law dependence of the maximum splash diameter on the impact Weber number is confirmed.
期刊介绍：
Fluid Dynamics is an international peer reviewed journal that publishes theoretical, computational, and experimental research on aeromechanics, hydrodynamics, plasma dynamics, underground hydrodynamics, and biomechanics of continuous media. Special attention is given to new trends developing at the leading edge of science, such as theory and application of multi-phase flows, chemically reactive flows, liquid and gas flows in electromagnetic fields, new hydrodynamical methods of increasing oil output, new approaches to the description of turbulent flows, etc.
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