Perturbations of the Depth of Liquid Penetration Into the Capillary During Bubble Departures

In the present paper, the influence of bubble size on liquid penetration into the capillary was experimentally and numerically studied. In the experiment, bubbles were generated from a glass capillary (with an inner diameter equal to 1 mm) in a glass tank containing distilled water, tap water or an...

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Autor principal:	Dzienis Paweł
Formato:	article
Lenguaje:	EN
Publicado:	Sciendo 2021
Materias:	bubbles bubble departures liquid movement into the capillary Mechanics of engineering. Applied mechanics TA349-359
Acceso en línea:	https://doaj.org/article/77f64445f13f4787bbe49007bb7cf132
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spelling	oai:doaj.org-article:77f64445f13f4787bbe49007bb7cf1322021-12-05T14:11:05ZPerturbations of the Depth of Liquid Penetration Into the Capillary During Bubble Departures2300-531910.2478/ama-2021-0032https://doaj.org/article/77f64445f13f4787bbe49007bb7cf1322021-12-01T00:00:00Zhttps://doi.org/10.2478/ama-2021-0032https://doaj.org/toc/2300-5319In the present paper, the influence of bubble size on liquid penetration into the capillary was experimentally and numerically studied. In the experiment, bubbles were generated from a glass capillary (with an inner diameter equal to 1 mm) in a glass tank containing distilled water, tap water or an aqueous solution of calcium carbonate. These liquids differ in the value of their surface tension, which influences the bubble size. During experimental investigations, air pressure fluctuations in the gas supply system were measured. Simultaneously, the videos showing the liquids’ penetration into the capillary were recorded. Based on the videos, the time series of liquid movements inside the capillary were recovered. The numerical models were used to study the influence of bubble size on the velocity of liquid flow above the capillary and the depth of liquid penetration into the capillary. It was shown that the air volume flow rate and the surface tension have the greatest impact on the changes of pressure during a single cycle of bubble departure (Δp). The changes in pressure during a single cycle of bubble departure determine the depth of liquid penetration into the capillary. Moreover, the values of Δp and, consequently, the depth of liquid penetration can be modified by perturbations in the liquid velocity above the capillary outlet.Dzienis PawełSciendoarticlebubblesbubble departuresliquid movement into the capillaryMechanics of engineering. Applied mechanicsTA349-359ENActa Mechanica et Automatica , Vol 15, Iss 4, Pp 254-259 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	bubbles bubble departures liquid movement into the capillary Mechanics of engineering. Applied mechanics TA349-359
spellingShingle	bubbles bubble departures liquid movement into the capillary Mechanics of engineering. Applied mechanics TA349-359 Dzienis Paweł Perturbations of the Depth of Liquid Penetration Into the Capillary During Bubble Departures
description	In the present paper, the influence of bubble size on liquid penetration into the capillary was experimentally and numerically studied. In the experiment, bubbles were generated from a glass capillary (with an inner diameter equal to 1 mm) in a glass tank containing distilled water, tap water or an aqueous solution of calcium carbonate. These liquids differ in the value of their surface tension, which influences the bubble size. During experimental investigations, air pressure fluctuations in the gas supply system were measured. Simultaneously, the videos showing the liquids’ penetration into the capillary were recorded. Based on the videos, the time series of liquid movements inside the capillary were recovered. The numerical models were used to study the influence of bubble size on the velocity of liquid flow above the capillary and the depth of liquid penetration into the capillary. It was shown that the air volume flow rate and the surface tension have the greatest impact on the changes of pressure during a single cycle of bubble departure (Δp). The changes in pressure during a single cycle of bubble departure determine the depth of liquid penetration into the capillary. Moreover, the values of Δp and, consequently, the depth of liquid penetration can be modified by perturbations in the liquid velocity above the capillary outlet.
format	article
author	Dzienis Paweł
author_facet	Dzienis Paweł
author_sort	Dzienis Paweł
title	Perturbations of the Depth of Liquid Penetration Into the Capillary During Bubble Departures
title_short	Perturbations of the Depth of Liquid Penetration Into the Capillary During Bubble Departures
title_full	Perturbations of the Depth of Liquid Penetration Into the Capillary During Bubble Departures
title_fullStr	Perturbations of the Depth of Liquid Penetration Into the Capillary During Bubble Departures
title_full_unstemmed	Perturbations of the Depth of Liquid Penetration Into the Capillary During Bubble Departures
title_sort	perturbations of the depth of liquid penetration into the capillary during bubble departures
publisher	Sciendo
publishDate	2021
url	https://doaj.org/article/77f64445f13f4787bbe49007bb7cf132
work_keys_str_mv	AT dzienispaweł perturbationsofthedepthofliquidpenetrationintothecapillaryduringbubbledepartures
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Perturbations of the Depth of Liquid Penetration Into the Capillary During Bubble Departures

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