Interferometry and Simulation of the Thin Liquid Film between a Free-Rising Bubble and a Glass Substrate

[Image: see text] Because of their practical importance and complex underlying physics, the thin liquid films formed between colliding bubbles or droplets have long been the subject of experimental investigations and theoretical modeling. Here, we examine the possibility of accurately predicting the...

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Autores principales: Vakarelski, Ivan U., Langley, Kenneth R., Yang, Fan, Thoroddsen, Sigurdur T.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2022
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8867726/
https://www.ncbi.nlm.nih.gov/pubmed/35129986
http://dx.doi.org/10.1021/acs.langmuir.1c03374
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author Vakarelski, Ivan U.
Langley, Kenneth R.
Yang, Fan
Thoroddsen, Sigurdur T.
author_facet Vakarelski, Ivan U.
Langley, Kenneth R.
Yang, Fan
Thoroddsen, Sigurdur T.
author_sort Vakarelski, Ivan U.
collection PubMed
description [Image: see text] Because of their practical importance and complex underlying physics, the thin liquid films formed between colliding bubbles or droplets have long been the subject of experimental investigations and theoretical modeling. Here, we examine the possibility of accurately predicting the dynamics of the thin liquid film drainage using numerical simulations when compared to an experimental investigation of millimetric bubbles free-rising in pure water and colliding with a flat glass interface. A high-speed camera is used to track the bubble bounce trajectory, and a second high-speed camera together with a pulsed laser is used for interferometric determination of the shape and evolution of the thin liquid film profile during the bounce. The numerical simulations are conducted with the open source Gerris flow solver. The simulation reliability was first confirmed by comparison with the experimental bubble bounce trajectory and bubble shape evolution during the bounce. We further demonstrate that the simulation predicted time evolution for the shape of the thin liquid film profiles is in excellent agreement with the high-speed interferometry measured profiles for the entire experimentally accessible film size range. Finally, we discuss the implications of using numerical simulation together with theoretical modeling for resolving the complex processes of high velocity bubble and droplet collisions.
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spelling pubmed-88677262022-02-24 Interferometry and Simulation of the Thin Liquid Film between a Free-Rising Bubble and a Glass Substrate Vakarelski, Ivan U. Langley, Kenneth R. Yang, Fan Thoroddsen, Sigurdur T. Langmuir [Image: see text] Because of their practical importance and complex underlying physics, the thin liquid films formed between colliding bubbles or droplets have long been the subject of experimental investigations and theoretical modeling. Here, we examine the possibility of accurately predicting the dynamics of the thin liquid film drainage using numerical simulations when compared to an experimental investigation of millimetric bubbles free-rising in pure water and colliding with a flat glass interface. A high-speed camera is used to track the bubble bounce trajectory, and a second high-speed camera together with a pulsed laser is used for interferometric determination of the shape and evolution of the thin liquid film profile during the bounce. The numerical simulations are conducted with the open source Gerris flow solver. The simulation reliability was first confirmed by comparison with the experimental bubble bounce trajectory and bubble shape evolution during the bounce. We further demonstrate that the simulation predicted time evolution for the shape of the thin liquid film profiles is in excellent agreement with the high-speed interferometry measured profiles for the entire experimentally accessible film size range. Finally, we discuss the implications of using numerical simulation together with theoretical modeling for resolving the complex processes of high velocity bubble and droplet collisions. American Chemical Society 2022-02-07 2022-02-22 /pmc/articles/PMC8867726/ /pubmed/35129986 http://dx.doi.org/10.1021/acs.langmuir.1c03374 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Vakarelski, Ivan U.
Langley, Kenneth R.
Yang, Fan
Thoroddsen, Sigurdur T.
Interferometry and Simulation of the Thin Liquid Film between a Free-Rising Bubble and a Glass Substrate
title Interferometry and Simulation of the Thin Liquid Film between a Free-Rising Bubble and a Glass Substrate
title_full Interferometry and Simulation of the Thin Liquid Film between a Free-Rising Bubble and a Glass Substrate
title_fullStr Interferometry and Simulation of the Thin Liquid Film between a Free-Rising Bubble and a Glass Substrate
title_full_unstemmed Interferometry and Simulation of the Thin Liquid Film between a Free-Rising Bubble and a Glass Substrate
title_short Interferometry and Simulation of the Thin Liquid Film between a Free-Rising Bubble and a Glass Substrate
title_sort interferometry and simulation of the thin liquid film between a free-rising bubble and a glass substrate
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8867726/
https://www.ncbi.nlm.nih.gov/pubmed/35129986
http://dx.doi.org/10.1021/acs.langmuir.1c03374
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