Fluidodinâmica de esferas leves e bolhas em líquidos
Ano de defesa: | 2007 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | , , |
Tipo de documento: | Tese |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Federal de Uberlândia
|
Programa de Pós-Graduação: |
Programa de Pós-graduação em Engenharia Química
|
Departamento: |
Engenharias
|
País: |
BR
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | https://repositorio.ufu.br/handle/123456789/15098 |
Resumo: | In the present work, it was studied the ascension motion of light spheres and bubbles experimentally in Newtonian and non-Newtonian stagnated incompressible liquids in infinite field. The movement of ascension of the spheres and bubbles were monitored by a digital photographic camera (model Sony CyberShot P32). By using of a digital strobe it was possible to observe the trajectories of the spheres and bubbles. The images from th camera were processed in the Global Lab Image 2 software. The experimental runs took place in an acrylic tank which was designed to assure the absence of wall effects. In the first stage it was studied the movement of light spheres and bubbles of nitrogen in water and glycerin which are Newtonian fluids. The drag coefficient was obtained by using experimental data of velocity. Three different curves were obtained when we worked with bubbles. The first one was obtained when the characteristic dimension was the equivalent volumetric diameter. The second one was obtained by using the diameter projected on the horizontal plan for the calculation of the number of Reynolds and aspect ratio (de/dh) for the calculation of the drag coefficient. The third one was obtained by using the aspect ratio for the calculation of both, number of Reynolds and drag coefficient. KARAMANEV et al. (2005) have mentioned that a universal curve is obtained when diameter projected on the horizontal plan is used to describe the drag coefficient. In the second stage, the same procedure was used but now we worked with non- Newtonian fluids. The third stage consists of the use of a software package (FLUENT 6.3.16) to simulate the data obtained experimentally. |
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2016-06-22T18:41:29Z2007-12-142016-06-22T18:41:29Z2007-09-28MELO, Fabiana Regina Grandeaux de. Fluidodinâmica de esferas leves e bolhas em líquidos. 2007. 112 f. Tese (Doutorado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2007.https://repositorio.ufu.br/handle/123456789/15098In the present work, it was studied the ascension motion of light spheres and bubbles experimentally in Newtonian and non-Newtonian stagnated incompressible liquids in infinite field. The movement of ascension of the spheres and bubbles were monitored by a digital photographic camera (model Sony CyberShot P32). By using of a digital strobe it was possible to observe the trajectories of the spheres and bubbles. The images from th camera were processed in the Global Lab Image 2 software. The experimental runs took place in an acrylic tank which was designed to assure the absence of wall effects. In the first stage it was studied the movement of light spheres and bubbles of nitrogen in water and glycerin which are Newtonian fluids. The drag coefficient was obtained by using experimental data of velocity. Three different curves were obtained when we worked with bubbles. The first one was obtained when the characteristic dimension was the equivalent volumetric diameter. The second one was obtained by using the diameter projected on the horizontal plan for the calculation of the number of Reynolds and aspect ratio (de/dh) for the calculation of the drag coefficient. The third one was obtained by using the aspect ratio for the calculation of both, number of Reynolds and drag coefficient. KARAMANEV et al. (2005) have mentioned that a universal curve is obtained when diameter projected on the horizontal plan is used to describe the drag coefficient. In the second stage, the same procedure was used but now we worked with non- Newtonian fluids. The third stage consists of the use of a software package (FLUENT 6.3.16) to simulate the data obtained experimentally.No presente trabalho, estudou-se experimentalmente o movimento de ascensão de esferas leves e bolhas em líquidos Newtonianos e não-Newtonianos incompressíveis estagnados em meio infinito. O movimento de ascensão das esferas e bolhas foi registrado por uma câmera fotográfica digital Sony CyberShotÓ P32 e através do uso de um Estroboscópio digital foi possível observar as trajetórias. As imagens provenientes da câmera foram processadas no software Global Lab Image 2. Os ensaios experimentais foram realizados em um tanque de acrílico cujas dimensões asseguram a ausência dos efeitos de parede. Na primeira etapa estudou-se o movimento de esferas leves e bolhas de nitrogênio em água e glicerina, fluidos de comportamento Newtoniano. Os dados de velocidade obtidos foram utilizados na construção de uma curva de arraste. Quando se trabalhou com bolhas três curvas distintas foram construídas. Uma utilizando como dimensão característica o diâmetro volumétrico equivalente, outra usando o diâmetro projetado sobre o plano horizontal para o cálculo do número de Reynolds e aspect ratio (deq/dh) para o cálculo do coeficiente de arraste, e a terceira considerando aspect ratio para o cálculo de ambos. Como reportado por KARAMANEV et al. (2005), quando se considera o diâmetro projetado sobre o plano horizontal para descrever o arraste isto resulta em uma curva universal. Na segunda etapa, o mesmo procedimento foi empregado quando trabalhou-se com fluidos de comportamento não-Newtoniano. A terceira etapa consta da utilização de um software comercial, FLUENTÒ 6.3.26, para reproduzir os dados obtidos experimentalmente.Doutor em Engenharia Químicaapplication/pdfapplication/zipporUniversidade Federal de UberlândiaPrograma de Pós-graduação em Engenharia QuímicaUFUBREngenhariasEsferasBolhasCoeficiente de arrasteFluidos não- newtonianosFluidos newtonianosFluidodinâmica computacionalNewtonian fluidsNon-newtonian fluidSpheresBubblesDrag coefficientComputational fluidodynamicsCNPQ::ENGENHARIAS::ENGENHARIA QUIMICAFluidodinâmica de esferas leves e bolhas em líquidosinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisBarrozo, Marcos Antonio de Souzahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4787095J7Ataíde, Carlos Henriquehttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4787952H6Duarte, Claudio Robertohttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4708473P5Scheid, Cláudia Míriamhttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4790525H6Brito, Ana Beatriz Neveshttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4708453D9http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4704946T6Melo, Fabiana Regina Grandeaux deinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFUinstname:Universidade Federal de Uberlândia (UFU)instacron:UFUTHUMBNAILFRGMeloTES01PRT.pdf.jpgFRGMeloTES01PRT.pdf.jpgGenerated Thumbnailimage/jpeg1277https://repositorio.ufu.br/bitstream/123456789/15098/5/FRGMeloTES01PRT.pdf.jpg69ea9f99d4ea2d55bee0096687f136dcMD55ORIGINALFRGMeloTES01PRT.pdfapplication/pdf1327396https://repositorio.ufu.br/bitstream/123456789/15098/1/FRGMeloTES01PRT.pdf2114ec593cd953ddd1d628b06af2cf0fMD51FRGMeloTES0203PRT.zipapplication/octet-stream2166818https://repositorio.ufu.br/bitstream/123456789/15098/2/FRGMeloTES0203PRT.zipf8a9137002eb458fe3100dff2a64235aMD52FRGMeloTES0405PRT.zipapplication/octet-stream2447707https://repositorio.ufu.br/bitstream/123456789/15098/3/FRGMeloTES0405PRT.zipcccae03413eb0f351647bfb5b6583899MD53TEXTFRGMeloTES01PRT.pdf.txtFRGMeloTES01PRT.pdf.txtExtracted texttext/plain208085https://repositorio.ufu.br/bitstream/123456789/15098/4/FRGMeloTES01PRT.pdf.txt2dabb69eb122a8f352695e1fdcfd73c5MD54123456789/150982019-10-08 14:11:59.623oai:repositorio.ufu.br:123456789/15098Repositório InstitucionalONGhttp://repositorio.ufu.br/oai/requestdiinf@dirbi.ufu.bropendoar:2019-10-08T17:11:59Repositório Institucional da UFU - Universidade Federal de Uberlândia (UFU)false |
dc.title.por.fl_str_mv |
Fluidodinâmica de esferas leves e bolhas em líquidos |
title |
Fluidodinâmica de esferas leves e bolhas em líquidos |
spellingShingle |
Fluidodinâmica de esferas leves e bolhas em líquidos Melo, Fabiana Regina Grandeaux de Esferas Bolhas Coeficiente de arraste Fluidos não- newtonianos Fluidos newtonianos Fluidodinâmica computacional Newtonian fluids Non-newtonian fluid Spheres Bubbles Drag coefficient Computational fluidodynamics CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
title_short |
Fluidodinâmica de esferas leves e bolhas em líquidos |
title_full |
Fluidodinâmica de esferas leves e bolhas em líquidos |
title_fullStr |
Fluidodinâmica de esferas leves e bolhas em líquidos |
title_full_unstemmed |
Fluidodinâmica de esferas leves e bolhas em líquidos |
title_sort |
Fluidodinâmica de esferas leves e bolhas em líquidos |
author |
Melo, Fabiana Regina Grandeaux de |
author_facet |
Melo, Fabiana Regina Grandeaux de |
author_role |
author |
dc.contributor.advisor-co1.fl_str_mv |
Barrozo, Marcos Antonio de Souza |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4787095J7 |
dc.contributor.advisor1.fl_str_mv |
Ataíde, Carlos Henrique |
dc.contributor.advisor1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4787952H6 |
dc.contributor.referee1.fl_str_mv |
Duarte, Claudio Roberto |
dc.contributor.referee1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4708473P5 |
dc.contributor.referee2.fl_str_mv |
Scheid, Cláudia Míriam |
dc.contributor.referee2Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4790525H6 |
dc.contributor.referee3.fl_str_mv |
Brito, Ana Beatriz Neves |
dc.contributor.referee3Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4708453D9 |
dc.contributor.authorLattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4704946T6 |
dc.contributor.author.fl_str_mv |
Melo, Fabiana Regina Grandeaux de |
contributor_str_mv |
Barrozo, Marcos Antonio de Souza Ataíde, Carlos Henrique Duarte, Claudio Roberto Scheid, Cláudia Míriam Brito, Ana Beatriz Neves |
dc.subject.por.fl_str_mv |
Esferas Bolhas Coeficiente de arraste Fluidos não- newtonianos Fluidos newtonianos Fluidodinâmica computacional |
topic |
Esferas Bolhas Coeficiente de arraste Fluidos não- newtonianos Fluidos newtonianos Fluidodinâmica computacional Newtonian fluids Non-newtonian fluid Spheres Bubbles Drag coefficient Computational fluidodynamics CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
dc.subject.eng.fl_str_mv |
Newtonian fluids Non-newtonian fluid Spheres Bubbles Drag coefficient Computational fluidodynamics |
dc.subject.cnpq.fl_str_mv |
CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
description |
In the present work, it was studied the ascension motion of light spheres and bubbles experimentally in Newtonian and non-Newtonian stagnated incompressible liquids in infinite field. The movement of ascension of the spheres and bubbles were monitored by a digital photographic camera (model Sony CyberShot P32). By using of a digital strobe it was possible to observe the trajectories of the spheres and bubbles. The images from th camera were processed in the Global Lab Image 2 software. The experimental runs took place in an acrylic tank which was designed to assure the absence of wall effects. In the first stage it was studied the movement of light spheres and bubbles of nitrogen in water and glycerin which are Newtonian fluids. The drag coefficient was obtained by using experimental data of velocity. Three different curves were obtained when we worked with bubbles. The first one was obtained when the characteristic dimension was the equivalent volumetric diameter. The second one was obtained by using the diameter projected on the horizontal plan for the calculation of the number of Reynolds and aspect ratio (de/dh) for the calculation of the drag coefficient. The third one was obtained by using the aspect ratio for the calculation of both, number of Reynolds and drag coefficient. KARAMANEV et al. (2005) have mentioned that a universal curve is obtained when diameter projected on the horizontal plan is used to describe the drag coefficient. In the second stage, the same procedure was used but now we worked with non- Newtonian fluids. The third stage consists of the use of a software package (FLUENT 6.3.16) to simulate the data obtained experimentally. |
publishDate |
2007 |
dc.date.available.fl_str_mv |
2007-12-14 2016-06-22T18:41:29Z |
dc.date.issued.fl_str_mv |
2007-09-28 |
dc.date.accessioned.fl_str_mv |
2016-06-22T18:41:29Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
MELO, Fabiana Regina Grandeaux de. Fluidodinâmica de esferas leves e bolhas em líquidos. 2007. 112 f. Tese (Doutorado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2007. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufu.br/handle/123456789/15098 |
identifier_str_mv |
MELO, Fabiana Regina Grandeaux de. Fluidodinâmica de esferas leves e bolhas em líquidos. 2007. 112 f. Tese (Doutorado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2007. |
url |
https://repositorio.ufu.br/handle/123456789/15098 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/zip |
dc.publisher.none.fl_str_mv |
Universidade Federal de Uberlândia |
dc.publisher.program.fl_str_mv |
Programa de Pós-graduação em Engenharia Química |
dc.publisher.initials.fl_str_mv |
UFU |
dc.publisher.country.fl_str_mv |
BR |
dc.publisher.department.fl_str_mv |
Engenharias |
publisher.none.fl_str_mv |
Universidade Federal de Uberlândia |
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