Pressure drop coefficient of laminar Newtonian flow in axisymmetric diffusers

Detalhes bibliográficos
Autor(a) principal: Rosa, Sergio
Data de Publicação: 2006
Outros Autores: Pinho, Fernando T.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Texto Completo: http://hdl.handle.net/10198/2041
Resumo: The laminar flow of Newtonian fluids in axisymmetric diffusers has been numerically investigated to evaluate the pressure-loss coefficient as a function of Reynolds number, diffusion angle and expansion ratio. The numerical simulations were carried out with a finitevolume based code using non-orthogonal collocated grids and second order accurate differencing schemes to discretize all terms of the transport equations. The calculations were carried out for Reynolds numbers between 2 and 200, diffusion angles from 0 to 90 and expansion ratios of 1.5 and 2 and the data are presented in tabular form and as correlations. A simplified 1D theoretical analysis helped explain the various contributions to the loss coefficient and its difference relative to the reversible pressure variation due to differences between the actual and fully developed friction losses, distortions of the velocity profiles and pressure non-uniformity upstream and downstream of the expansion section.
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spelling Pressure drop coefficient of laminar Newtonian flow in axisymmetric diffusersLaminar flowNewtonainIrreversible loss coefficientAxisymmetric diffusersNumericalThe laminar flow of Newtonian fluids in axisymmetric diffusers has been numerically investigated to evaluate the pressure-loss coefficient as a function of Reynolds number, diffusion angle and expansion ratio. The numerical simulations were carried out with a finitevolume based code using non-orthogonal collocated grids and second order accurate differencing schemes to discretize all terms of the transport equations. The calculations were carried out for Reynolds numbers between 2 and 200, diffusion angles from 0 to 90 and expansion ratios of 1.5 and 2 and the data are presented in tabular form and as correlations. A simplified 1D theoretical analysis helped explain the various contributions to the loss coefficient and its difference relative to the reversible pressure variation due to differences between the actual and fully developed friction losses, distortions of the velocity profiles and pressure non-uniformity upstream and downstream of the expansion section.ElsevierBiblioteca Digital do IPBRosa, SergioPinho, Fernando T.2010-02-19T14:55:07Z20062006-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10198/2041engRosa, Sérgio; Pinho, Fernando (2006). Pressure drop coefficient of laminar Newtonian flow in axisymmetric diffusers. International Journal of Heat and Fluid Flow. ISSN 0142-727X. 27:2, p. 319-3280142-727X10.1016/j.ijheatfluidflow.2005.09.003info:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-02-25T11:54:41Zoai:bibliotecadigital.ipb.pt:10198/2041Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-28T11:16:00.932710Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Pressure drop coefficient of laminar Newtonian flow in axisymmetric diffusers
title Pressure drop coefficient of laminar Newtonian flow in axisymmetric diffusers
spellingShingle Pressure drop coefficient of laminar Newtonian flow in axisymmetric diffusers
Rosa, Sergio
Laminar flow
Newtonain
Irreversible loss coefficient
Axisymmetric diffusers
Numerical
title_short Pressure drop coefficient of laminar Newtonian flow in axisymmetric diffusers
title_full Pressure drop coefficient of laminar Newtonian flow in axisymmetric diffusers
title_fullStr Pressure drop coefficient of laminar Newtonian flow in axisymmetric diffusers
title_full_unstemmed Pressure drop coefficient of laminar Newtonian flow in axisymmetric diffusers
title_sort Pressure drop coefficient of laminar Newtonian flow in axisymmetric diffusers
author Rosa, Sergio
author_facet Rosa, Sergio
Pinho, Fernando T.
author_role author
author2 Pinho, Fernando T.
author2_role author
dc.contributor.none.fl_str_mv Biblioteca Digital do IPB
dc.contributor.author.fl_str_mv Rosa, Sergio
Pinho, Fernando T.
dc.subject.por.fl_str_mv Laminar flow
Newtonain
Irreversible loss coefficient
Axisymmetric diffusers
Numerical
topic Laminar flow
Newtonain
Irreversible loss coefficient
Axisymmetric diffusers
Numerical
description The laminar flow of Newtonian fluids in axisymmetric diffusers has been numerically investigated to evaluate the pressure-loss coefficient as a function of Reynolds number, diffusion angle and expansion ratio. The numerical simulations were carried out with a finitevolume based code using non-orthogonal collocated grids and second order accurate differencing schemes to discretize all terms of the transport equations. The calculations were carried out for Reynolds numbers between 2 and 200, diffusion angles from 0 to 90 and expansion ratios of 1.5 and 2 and the data are presented in tabular form and as correlations. A simplified 1D theoretical analysis helped explain the various contributions to the loss coefficient and its difference relative to the reversible pressure variation due to differences between the actual and fully developed friction losses, distortions of the velocity profiles and pressure non-uniformity upstream and downstream of the expansion section.
publishDate 2006
dc.date.none.fl_str_mv 2006
2006-01-01T00:00:00Z
2010-02-19T14:55:07Z
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/10198/2041
url http://hdl.handle.net/10198/2041
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Rosa, Sérgio; Pinho, Fernando (2006). Pressure drop coefficient of laminar Newtonian flow in axisymmetric diffusers. International Journal of Heat and Fluid Flow. ISSN 0142-727X. 27:2, p. 319-328
0142-727X
10.1016/j.ijheatfluidflow.2005.09.003
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
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