The distribution of wall shear stress downstream of a change in roughness

Bibliographic Details
Main Author: Loureiro, Juliana Braga Rodrigues
Publication Date: 2010
Other Authors: Sousa, Fernanda Beatriz de Carvalho Cerveira de, Zotin, Jose Luiz Zanon, Freire, Atila Pantaleão Silva
Format: Article
Language: eng
Source: Repositório Institucional da UFRJ
Download full: http://hdl.handle.net/11422/8781
Summary: Indisponível.
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spelling Loureiro, Juliana Braga RodriguesSousa, Fernanda Beatriz de Carvalho Cerveira deZotin, Jose Luiz ZanonFreire, Atila Pantaleão Silva2019-07-12T16:36:53Z2023-11-30T03:03:36Z2010-07-140142-727Xhttp://hdl.handle.net/11422/878110.1016/j.ijheatfluidflow.2010.06.006Indisponível.In the present work, six different experimental techniques are used to characterize the non-equilibrium flow downstream of a rough-to-smooth step change in surface roughness. Over the rough surface, wall shear stress results obtained through the form drag and the Reynolds stress methods are shown to be mutually consistent. Over the smooth surface, reference wall shear stress data is obtained through two optical methods: linear velocity profiles obtained through laser-Doppler anemometry and a sensor surface, the diverging fringe Doppler sensor. The work shows that the two most commonly used methods to determine the wall shear stress, the log-law gradient method and the Reynolds shear stress method, are completely inappropriate in the developing flow region. Preston tubes, on the other hand, are shown to perform well in the region of a non-equilibrium flow.Submitted by Jairo Amaro (jairo.amaro@sibi.ufrj.br) on 2019-07-12T16:36:53Z No. of bitstreams: 1 2010_FREIRE_IJHFF31-min.pdf: 1133291 bytes, checksum: bcb38771788226f897633622bb7ff6b1 (MD5)Made available in DSpace on 2019-07-12T16:36:53Z (GMT). No. of bitstreams: 1 2010_FREIRE_IJHFF31-min.pdf: 1133291 bytes, checksum: bcb38771788226f897633622bb7ff6b1 (MD5) Previous issue date: 2010-07-14engElsevierBrasilNúcleo Interdisciplinar de Dinâmica dos FluidosInternational Journal of Heat and Fluid FlowCNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOSWall shear stressRoughnessTurbulenceLaser-Doppler anemometryThe distribution of wall shear stress downstream of a change in roughnessinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article315785793365 diasinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRJinstname:Universidade Federal do Rio de Janeiro (UFRJ)instacron:UFRJORIGINAL2010_FREIRE_IJHFF31-min.pdf2010_FREIRE_IJHFF31-min.pdfapplication/pdf1133291http://pantheon.ufrj.br:80/bitstream/11422/8781/1/2010_FREIRE_IJHFF31-min.pdfbcb38771788226f897633622bb7ff6b1MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81853http://pantheon.ufrj.br:80/bitstream/11422/8781/2/license.txtdd32849f2bfb22da963c3aac6e26e255MD5211422/87812023-11-30 00:03:36.268oai:pantheon.ufrj.br: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Repositório de PublicaçõesPUBhttp://www.pantheon.ufrj.br/oai/requestopendoar:2023-11-30T03:03:36Repositório Institucional da UFRJ - Universidade Federal do Rio de Janeiro (UFRJ)false
dc.title.en.fl_str_mv The distribution of wall shear stress downstream of a change in roughness
title The distribution of wall shear stress downstream of a change in roughness
spellingShingle The distribution of wall shear stress downstream of a change in roughness
Loureiro, Juliana Braga Rodrigues
CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOS
Wall shear stress
Roughness
Turbulence
Laser-Doppler anemometry
title_short The distribution of wall shear stress downstream of a change in roughness
title_full The distribution of wall shear stress downstream of a change in roughness
title_fullStr The distribution of wall shear stress downstream of a change in roughness
title_full_unstemmed The distribution of wall shear stress downstream of a change in roughness
title_sort The distribution of wall shear stress downstream of a change in roughness
author Loureiro, Juliana Braga Rodrigues
author_facet Loureiro, Juliana Braga Rodrigues
Sousa, Fernanda Beatriz de Carvalho Cerveira de
Zotin, Jose Luiz Zanon
Freire, Atila Pantaleão Silva
author_role author
author2 Sousa, Fernanda Beatriz de Carvalho Cerveira de
Zotin, Jose Luiz Zanon
Freire, Atila Pantaleão Silva
author2_role author
author
author
dc.contributor.author.fl_str_mv Loureiro, Juliana Braga Rodrigues
Sousa, Fernanda Beatriz de Carvalho Cerveira de
Zotin, Jose Luiz Zanon
Freire, Atila Pantaleão Silva
dc.subject.cnpq.fl_str_mv CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOS
topic CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOS
Wall shear stress
Roughness
Turbulence
Laser-Doppler anemometry
dc.subject.eng.fl_str_mv Wall shear stress
Roughness
Turbulence
Laser-Doppler anemometry
description Indisponível.
publishDate 2010
dc.date.issued.fl_str_mv 2010-07-14
dc.date.accessioned.fl_str_mv 2019-07-12T16:36:53Z
dc.date.available.fl_str_mv 2023-11-30T03:03:36Z
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 http://hdl.handle.net/11422/8781
dc.identifier.issn.pt_BR.fl_str_mv 0142-727X
dc.identifier.doi.pt_BR.fl_str_mv 10.1016/j.ijheatfluidflow.2010.06.006
identifier_str_mv 0142-727X
10.1016/j.ijheatfluidflow.2010.06.006
url http://hdl.handle.net/11422/8781
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.en.fl_str_mv International Journal of Heat and Fluid Flow
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
dc.publisher.country.fl_str_mv Brasil
dc.publisher.department.fl_str_mv Núcleo Interdisciplinar de Dinâmica dos Fluidos
publisher.none.fl_str_mv Elsevier
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
bitstream.url.fl_str_mv http://pantheon.ufrj.br:80/bitstream/11422/8781/1/2010_FREIRE_IJHFF31-min.pdf
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