Experimental study of the falling film of liquid around a Taylor bubble

Detalhes bibliográficos
Autor(a) principal: Azevedo, Marcos Bertrand de
Data de Publicação: 2016
Outros Autores: Santos, Douglas dos, Faccini, José Luiz Horacio, Su, Jian
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRJ
Texto Completo: http://hdl.handle.net/11422/8399
Resumo: The present work reports an experimental study of the falling liquid film around single Taylor bubbles rising in vertical tubes filled with stagnant liquids by using a pulse-echo ultrasonic technique. The experiments were carried out in acrylic tubes 2.0 m long, with inner diameters of 0.019, 0.024 and 0.034 m, with five water-glycerin mixtures, corresponding to inverse viscosity number ranging from 15 to 22422. The rising bubble and the falling liquid film were measured by using ultrasonic transducers located at the one side of the tube. The velocity and profile of the Taylor bubble, and the development length and equilibrium thickness of the falling liquid film around the bubble were obtained by the ultrasonic signals processing. Based on the experimental results of the present study, several correlations available to estimate the equilibrium thicknesses of liquid films falling around Taylor bubbles were evaluated and new correlations were proposed to estimate the dimensionless equilibrium film thickness and the film development length respectively.
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spelling Experimental study of the falling film of liquid around a Taylor bubbleTaylor bubbleFalling liquid filmEquilibrium film thicknessFilm development lengthUltrasonic techniqueStagnant liquidCNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOSThe present work reports an experimental study of the falling liquid film around single Taylor bubbles rising in vertical tubes filled with stagnant liquids by using a pulse-echo ultrasonic technique. The experiments were carried out in acrylic tubes 2.0 m long, with inner diameters of 0.019, 0.024 and 0.034 m, with five water-glycerin mixtures, corresponding to inverse viscosity number ranging from 15 to 22422. The rising bubble and the falling liquid film were measured by using ultrasonic transducers located at the one side of the tube. The velocity and profile of the Taylor bubble, and the development length and equilibrium thickness of the falling liquid film around the bubble were obtained by the ultrasonic signals processing. Based on the experimental results of the present study, several correlations available to estimate the equilibrium thicknesses of liquid films falling around Taylor bubbles were evaluated and new correlations were proposed to estimate the dimensionless equilibrium film thickness and the film development length respectively.Indisponível.ElsevierBrasilNúcleo Interdisciplinar de Dinâmica dos Fluidos2019-06-10T15:57:06Z2023-12-21T03:05:58Z2016-10-06info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article0301-9322http://hdl.handle.net/11422/839910.1016/j.ijmultiphaseflow.2016.09.021engInternational Journal of Multiphase FlowAzevedo, Marcos Bertrand deSantos, Douglas dosFaccini, José Luiz HoracioSu, Jianinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRJinstname:Universidade Federal do Rio de Janeiro (UFRJ)instacron:UFRJ2023-12-21T03:05:58Zoai:pantheon.ufrj.br:11422/8399Repositório InstitucionalPUBhttp://www.pantheon.ufrj.br/oai/requestpantheon@sibi.ufrj.bropendoar:2024-11-11T16:18:57.595882Repositório Institucional da UFRJ - Universidade Federal do Rio de Janeiro (UFRJ)false
dc.title.none.fl_str_mv Experimental study of the falling film of liquid around a Taylor bubble
title Experimental study of the falling film of liquid around a Taylor bubble
spellingShingle Experimental study of the falling film of liquid around a Taylor bubble
Azevedo, Marcos Bertrand de
Taylor bubble
Falling liquid film
Equilibrium film thickness
Film development length
Ultrasonic technique
Stagnant liquid
CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOS
title_short Experimental study of the falling film of liquid around a Taylor bubble
title_full Experimental study of the falling film of liquid around a Taylor bubble
title_fullStr Experimental study of the falling film of liquid around a Taylor bubble
title_full_unstemmed Experimental study of the falling film of liquid around a Taylor bubble
title_sort Experimental study of the falling film of liquid around a Taylor bubble
author Azevedo, Marcos Bertrand de
author_facet Azevedo, Marcos Bertrand de
Santos, Douglas dos
Faccini, José Luiz Horacio
Su, Jian
author_role author
author2 Santos, Douglas dos
Faccini, José Luiz Horacio
Su, Jian
author2_role author
author
author
dc.contributor.author.fl_str_mv Azevedo, Marcos Bertrand de
Santos, Douglas dos
Faccini, José Luiz Horacio
Su, Jian
dc.subject.por.fl_str_mv Taylor bubble
Falling liquid film
Equilibrium film thickness
Film development length
Ultrasonic technique
Stagnant liquid
CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOS
topic Taylor bubble
Falling liquid film
Equilibrium film thickness
Film development length
Ultrasonic technique
Stagnant liquid
CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOS
description The present work reports an experimental study of the falling liquid film around single Taylor bubbles rising in vertical tubes filled with stagnant liquids by using a pulse-echo ultrasonic technique. The experiments were carried out in acrylic tubes 2.0 m long, with inner diameters of 0.019, 0.024 and 0.034 m, with five water-glycerin mixtures, corresponding to inverse viscosity number ranging from 15 to 22422. The rising bubble and the falling liquid film were measured by using ultrasonic transducers located at the one side of the tube. The velocity and profile of the Taylor bubble, and the development length and equilibrium thickness of the falling liquid film around the bubble were obtained by the ultrasonic signals processing. Based on the experimental results of the present study, several correlations available to estimate the equilibrium thicknesses of liquid films falling around Taylor bubbles were evaluated and new correlations were proposed to estimate the dimensionless equilibrium film thickness and the film development length respectively.
publishDate 2016
dc.date.none.fl_str_mv 2016-10-06
2019-06-10T15:57:06Z
2023-12-21T03:05:58Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv 0301-9322
http://hdl.handle.net/11422/8399
10.1016/j.ijmultiphaseflow.2016.09.021
identifier_str_mv 0301-9322
10.1016/j.ijmultiphaseflow.2016.09.021
url http://hdl.handle.net/11422/8399
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv International Journal of Multiphase Flow
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
Brasil
Núcleo Interdisciplinar de Dinâmica dos Fluidos
publisher.none.fl_str_mv Elsevier
Brasil
Núcleo Interdisciplinar de Dinâmica dos Fluidos
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFRJ
instname:Universidade Federal do Rio de Janeiro (UFRJ)
instacron:UFRJ
instname_str Universidade Federal do Rio de Janeiro (UFRJ)
instacron_str UFRJ
institution UFRJ
reponame_str Repositório Institucional da UFRJ
collection Repositório Institucional da UFRJ
repository.name.fl_str_mv Repositório Institucional da UFRJ - Universidade Federal do Rio de Janeiro (UFRJ)
repository.mail.fl_str_mv pantheon@sibi.ufrj.br
_version_ 1823672617508274176

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