Wall shear stress measurements and parametric analysis of impinging wall jets
Autor(a) principal: | |
---|---|
Data de Publicação: | 2012 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRJ |
Texto Completo: | http://hdl.handle.net/11422/8592 |
Resumo: | Indisponível. |
id |
UFRJ_94cf825eef439c54567270e456d851ce |
---|---|
oai_identifier_str |
oai:pantheon.ufrj.br:11422/8592 |
network_acronym_str |
UFRJ |
network_name_str |
Repositório Institucional da UFRJ |
repository_id_str |
|
spelling |
Loureiro, Juliana Braga RodriguesFreire, Atila Pantaleão Silva2019-07-01T15:25:18Z2023-11-30T03:03:34Z2012-07-250017-9310http://hdl.handle.net/11422/859210.1016/j.ijheatmasstransfer.2012.06.028Indisponível.This paper investigates the influence of some governing parameters on the near wall characteristics of a circular impinging jet onto a smooth flat plate. Laser Doppler anemometry (LDA) is used to characterize the mean and turbulent fields including the wall shear stress. The experiments were conducted at one nozzle-to-plate space (H/D = 2) and Reynolds number of 47,100. The work makes a parametric analysis of impinging jets based on (i) conventional parameters that include the nozzle diameter, the nozzle-to-plate distance and the bulk velocity of the jet and (ii) gross parameters like the jet momentum flux. Parametrization schemes based on conventional quantities are shown to be very sensitive to the particular choice of reference quantity, resulting in functional behaviours that can be represented through either power law or linear expressions. On the other hand, it is shown that the jet momentum flux and the kinematic viscosity suffice to determine the mean and fluctuating flow parameters, even in the initial region of wall jet development (1 < r/D < 5). With the latter choice, the streamwise variation of the maximum mean velocity and maximum Reynolds longitudinal stress are shown to decay according to power law expressions. A particular near wall parametrization scheme for the mean velocity profile that resorts to a scaling procedure based on the stream-wise evolution of the flow characterized by its maximum velocity is also presented. Higher-order moments of the velocity fluctuations are discussed.Submitted by Jairo Amaro (jairo.amaro@sibi.ufrj.br) on 2019-07-01T15:25:18Z No. of bitstreams: 1 2012_LOUREIRO_v55_p6400-6409-min.pdf: 611183 bytes, checksum: b703b4a717dc00bf7a9b6ee8f8be8637 (MD5)Made available in DSpace on 2019-07-01T15:25:18Z (GMT). No. of bitstreams: 1 2012_LOUREIRO_v55_p6400-6409-min.pdf: 611183 bytes, checksum: b703b4a717dc00bf7a9b6ee8f8be8637 (MD5) Previous issue date: 2012-07-25engElsevierBrasilNúcleo Interdisciplinar de Dinâmica dos FluidosInternational Journal of Heat and Mass TransferCNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOSImpinging jetWall shear stressParametric analysisWall shear stress measurements and parametric analysis of impinging wall jetsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article5523-2464006409365 diasinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRJinstname:Universidade Federal do Rio de Janeiro (UFRJ)instacron:UFRJORIGINAL2012_LOUREIRO_v55_p6400-6409-min.pdf2012_LOUREIRO_v55_p6400-6409-min.pdfapplication/pdf611183http://pantheon.ufrj.br:80/bitstream/11422/8592/1/2012_LOUREIRO_v55_p6400-6409-min.pdfb703b4a717dc00bf7a9b6ee8f8be8637MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81853http://pantheon.ufrj.br:80/bitstream/11422/8592/2/license.txtdd32849f2bfb22da963c3aac6e26e255MD5211422/85922023-11-30 00:03:34.047oai:pantheon.ufrj.br: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Repositório de PublicaçõesPUBhttp://www.pantheon.ufrj.br/oai/requestopendoar:2023-11-30T03:03:34Repositório Institucional da UFRJ - Universidade Federal do Rio de Janeiro (UFRJ)false |
dc.title.en.fl_str_mv |
Wall shear stress measurements and parametric analysis of impinging wall jets |
title |
Wall shear stress measurements and parametric analysis of impinging wall jets |
spellingShingle |
Wall shear stress measurements and parametric analysis of impinging wall jets Loureiro, Juliana Braga Rodrigues CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOS Impinging jet Wall shear stress Parametric analysis |
title_short |
Wall shear stress measurements and parametric analysis of impinging wall jets |
title_full |
Wall shear stress measurements and parametric analysis of impinging wall jets |
title_fullStr |
Wall shear stress measurements and parametric analysis of impinging wall jets |
title_full_unstemmed |
Wall shear stress measurements and parametric analysis of impinging wall jets |
title_sort |
Wall shear stress measurements and parametric analysis of impinging wall jets |
author |
Loureiro, Juliana Braga Rodrigues |
author_facet |
Loureiro, Juliana Braga Rodrigues Freire, Atila Pantaleão Silva |
author_role |
author |
author2 |
Freire, Atila Pantaleão Silva |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Loureiro, Juliana Braga Rodrigues 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 Impinging jet Wall shear stress Parametric analysis |
dc.subject.eng.fl_str_mv |
Impinging jet Wall shear stress Parametric analysis |
description |
Indisponível. |
publishDate |
2012 |
dc.date.issued.fl_str_mv |
2012-07-25 |
dc.date.accessioned.fl_str_mv |
2019-07-01T15:25:18Z |
dc.date.available.fl_str_mv |
2023-11-30T03:03:34Z |
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/11422/8592 |
dc.identifier.issn.pt_BR.fl_str_mv |
0017-9310 |
dc.identifier.doi.pt_BR.fl_str_mv |
10.1016/j.ijheatmasstransfer.2012.06.028 |
identifier_str_mv |
0017-9310 10.1016/j.ijheatmasstransfer.2012.06.028 |
url |
http://hdl.handle.net/11422/8592 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.en.fl_str_mv |
International Journal of Heat and Mass Transfer |
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/11422/8592/1/2012_LOUREIRO_v55_p6400-6409-min.pdf http://pantheon.ufrj.br:80/bitstream/11422/8592/2/license.txt |
bitstream.checksum.fl_str_mv |
b703b4a717dc00bf7a9b6ee8f8be8637 dd32849f2bfb22da963c3aac6e26e255 |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFRJ - Universidade Federal do Rio de Janeiro (UFRJ) |
repository.mail.fl_str_mv |
|
_version_ |
1784097147264696320 |