Air entrapment and bubble formation during droplet impact onto a single cubic pillar

Abstract We study the vertical impact of a droplet onto a cubic pillar of comparable size placed on a flat surface, by means of numerical simulations and experiments. Strikingly, during the impact a large volume of air is trapped around the pillar side faces. Impingement upon different positions of...

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Autores principales:	Weibo Ren, Patrick Foltyn, Anne Geppert, Bernhard Weigand
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3851cf973e02404f9c74a282c4b76a85
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spelling	oai:doaj.org-article:3851cf973e02404f9c74a282c4b76a852021-12-02T18:03:06ZAir entrapment and bubble formation during droplet impact onto a single cubic pillar10.1038/s41598-021-97376-32045-2322https://doaj.org/article/3851cf973e02404f9c74a282c4b76a852021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-97376-3https://doaj.org/toc/2045-2322Abstract We study the vertical impact of a droplet onto a cubic pillar of comparable size placed on a flat surface, by means of numerical simulations and experiments. Strikingly, during the impact a large volume of air is trapped around the pillar side faces. Impingement upon different positions of the pillar top surface strongly influences the size and the position of the entrapped air. By comparing the droplet morphological changes during the impact from both computations and experiments, we show that the direct numerical simulations, based on the Volume of Fluid method, provide additional and new insight into the droplet dynamics. We elucidate, with the computational results, the three-dimensional air entrapment process as well as the evolution of the entrapped air into bubbles.Weibo RenPatrick FoltynAnne GeppertBernhard WeigandNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Weibo Ren Patrick Foltyn Anne Geppert Bernhard Weigand Air entrapment and bubble formation during droplet impact onto a single cubic pillar
description	Abstract We study the vertical impact of a droplet onto a cubic pillar of comparable size placed on a flat surface, by means of numerical simulations and experiments. Strikingly, during the impact a large volume of air is trapped around the pillar side faces. Impingement upon different positions of the pillar top surface strongly influences the size and the position of the entrapped air. By comparing the droplet morphological changes during the impact from both computations and experiments, we show that the direct numerical simulations, based on the Volume of Fluid method, provide additional and new insight into the droplet dynamics. We elucidate, with the computational results, the three-dimensional air entrapment process as well as the evolution of the entrapped air into bubbles.
format	article
author	Weibo Ren Patrick Foltyn Anne Geppert Bernhard Weigand
author_facet	Weibo Ren Patrick Foltyn Anne Geppert Bernhard Weigand
author_sort	Weibo Ren
title	Air entrapment and bubble formation during droplet impact onto a single cubic pillar
title_short	Air entrapment and bubble formation during droplet impact onto a single cubic pillar
title_full	Air entrapment and bubble formation during droplet impact onto a single cubic pillar
title_fullStr	Air entrapment and bubble formation during droplet impact onto a single cubic pillar
title_full_unstemmed	Air entrapment and bubble formation during droplet impact onto a single cubic pillar
title_sort	air entrapment and bubble formation during droplet impact onto a single cubic pillar
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/3851cf973e02404f9c74a282c4b76a85
work_keys_str_mv	AT weiboren airentrapmentandbubbleformationduringdropletimpactontoasinglecubicpillar AT patrickfoltyn airentrapmentandbubbleformationduringdropletimpactontoasinglecubicpillar AT annegeppert airentrapmentandbubbleformationduringdropletimpactontoasinglecubicpillar AT bernhardweigand airentrapmentandbubbleformationduringdropletimpactontoasinglecubicpillar
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Air entrapment and bubble formation during droplet impact onto a single cubic pillar

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