Applicability of Stokes method for measuring viscosity of mixtures with concentration gradient
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | spa |
Título da fonte: | Caderno Brasileiro de Ensino de Física (Online) |
Texto Completo: | https://periodicos.ufsc.br/index.php/fisica/article/view/2175-7941.2017v34n3p912 |
Resumo: | After measuring density and viscosity of a mixture of glycerin and water contained in a vertical pipe, a variation of these properties according to depth is observed. These gradients are typical of non-equilibrium states related to the lower density of water and the fact that relatively long times are necessary to achieve homogeneity. In the same pipe, the falling velocity of five little spheres is measured as a function of depth, and then a numerical fit is performed which agrees very well with experimental data. Based on the generalization of these results, the applicability of Stokes method is discussed for measuring viscosity of mixtures with a concentration gradient. |
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Caderno Brasileiro de Ensino de Física (Online) |
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Applicability of Stokes method for measuring viscosity of mixtures with concentration gradientAplicabilidad del método de Stokes para medir la viscosidad de mezclas con gradiente de concentraciónAfter measuring density and viscosity of a mixture of glycerin and water contained in a vertical pipe, a variation of these properties according to depth is observed. These gradients are typical of non-equilibrium states related to the lower density of water and the fact that relatively long times are necessary to achieve homogeneity. In the same pipe, the falling velocity of five little spheres is measured as a function of depth, and then a numerical fit is performed which agrees very well with experimental data. Based on the generalization of these results, the applicability of Stokes method is discussed for measuring viscosity of mixtures with a concentration gradient.Al medir la densidad y viscosidad de una mezcla de glicerina y agua contenida en un tubo vertical, se observa una variación de estas propiedades con la profundidad. Estos gradientes son propios de estados de desequilibrio asociados a la menor densidad del agua y a que los tiempos requeridos para alcanzar homogeneidad pueden ser relativamente grandes. En el mismo tubo, se mide la velocidad de caída de cinco bolillas en función de la profundidad, y luego se realiza un ajuste numérico que muestra una muy buena concordancia con los datos experimentales. A partir de la generalización de estos resultados se discute la aplicabilidad del método de Stokes para medir viscosidades de mezclas con gradiente de concentración.Imprensa Universitária - UFSC2017-12-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsc.br/index.php/fisica/article/view/2175-7941.2017v34n3p91210.5007/2175-7941.2017v34n3p912Caderno Brasileiro de Ensino de Física; v. 34 n. 3 (2017); 912-9272175-79411677-2334reponame:Caderno Brasileiro de Ensino de Física (Online)instname:Universidade Federal de Santa Catarina (UFSC)instacron:UFSCspahttps://periodicos.ufsc.br/index.php/fisica/article/view/2175-7941.2017v34n3p912/35422Copyright (c) 2017 Caderno Brasileiro de Ensino de Físicainfo:eu-repo/semantics/openAccessMedina, CésarAlastuey, PatricioGómez Marigliano, Ana Clelia2017-12-08T17:18:21Zoai:periodicos.ufsc.br:article/49958Revistahttp://www.periodicos.ufsc.br/index.php/fisicaPUBhttps://periodicos.ufsc.br/index.php/fisica/oaicbefisica@gmail.com||fscccef@fsc.ufsc.br|| cbefisica@gmail.com2175-79411677-2334opendoar:2017-12-08T17:18:21Caderno Brasileiro de Ensino de Física (Online) - Universidade Federal de Santa Catarina (UFSC)false |
dc.title.none.fl_str_mv |
Applicability of Stokes method for measuring viscosity of mixtures with concentration gradient Aplicabilidad del método de Stokes para medir la viscosidad de mezclas con gradiente de concentración |
title |
Applicability of Stokes method for measuring viscosity of mixtures with concentration gradient |
spellingShingle |
Applicability of Stokes method for measuring viscosity of mixtures with concentration gradient Medina, César |
title_short |
Applicability of Stokes method for measuring viscosity of mixtures with concentration gradient |
title_full |
Applicability of Stokes method for measuring viscosity of mixtures with concentration gradient |
title_fullStr |
Applicability of Stokes method for measuring viscosity of mixtures with concentration gradient |
title_full_unstemmed |
Applicability of Stokes method for measuring viscosity of mixtures with concentration gradient |
title_sort |
Applicability of Stokes method for measuring viscosity of mixtures with concentration gradient |
author |
Medina, César |
author_facet |
Medina, César Alastuey, Patricio Gómez Marigliano, Ana Clelia |
author_role |
author |
author2 |
Alastuey, Patricio Gómez Marigliano, Ana Clelia |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Medina, César Alastuey, Patricio Gómez Marigliano, Ana Clelia |
description |
After measuring density and viscosity of a mixture of glycerin and water contained in a vertical pipe, a variation of these properties according to depth is observed. These gradients are typical of non-equilibrium states related to the lower density of water and the fact that relatively long times are necessary to achieve homogeneity. In the same pipe, the falling velocity of five little spheres is measured as a function of depth, and then a numerical fit is performed which agrees very well with experimental data. Based on the generalization of these results, the applicability of Stokes method is discussed for measuring viscosity of mixtures with a concentration gradient. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-12-08 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.ufsc.br/index.php/fisica/article/view/2175-7941.2017v34n3p912 10.5007/2175-7941.2017v34n3p912 |
url |
https://periodicos.ufsc.br/index.php/fisica/article/view/2175-7941.2017v34n3p912 |
identifier_str_mv |
10.5007/2175-7941.2017v34n3p912 |
dc.language.iso.fl_str_mv |
spa |
language |
spa |
dc.relation.none.fl_str_mv |
https://periodicos.ufsc.br/index.php/fisica/article/view/2175-7941.2017v34n3p912/35422 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2017 Caderno Brasileiro de Ensino de Física info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2017 Caderno Brasileiro de Ensino de Física |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Imprensa Universitária - UFSC |
publisher.none.fl_str_mv |
Imprensa Universitária - UFSC |
dc.source.none.fl_str_mv |
Caderno Brasileiro de Ensino de Física; v. 34 n. 3 (2017); 912-927 2175-7941 1677-2334 reponame:Caderno Brasileiro de Ensino de Física (Online) instname:Universidade Federal de Santa Catarina (UFSC) instacron:UFSC |
instname_str |
Universidade Federal de Santa Catarina (UFSC) |
instacron_str |
UFSC |
institution |
UFSC |
reponame_str |
Caderno Brasileiro de Ensino de Física (Online) |
collection |
Caderno Brasileiro de Ensino de Física (Online) |
repository.name.fl_str_mv |
Caderno Brasileiro de Ensino de Física (Online) - Universidade Federal de Santa Catarina (UFSC) |
repository.mail.fl_str_mv |
cbefisica@gmail.com||fscccef@fsc.ufsc.br|| cbefisica@gmail.com |
_version_ |
1799940573884317696 |