Turbulent heat transfer and fluid flow in ducts of gradually varying cross section.

Detalhes bibliográficos
Ano de defesa: 1999
Autor(a) principal: Edimilson Junqueira Braga
Orientador(a): Não Informado pela instituição
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Instituto Tecnológico de Aeronáutica
Programa de Pós-Graduação: Não Informado pela instituição
Departamento: Não Informado pela instituição
País: Não Informado pela instituição
Palavras-chave em Português:
Escoamento turbulento
Transferência de calor
Dutos
Modelos matemáticos
Análise numérica
Dinâmica dos fluidos computacional
Mecânica dos fluidos
Física
Link de acesso: http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=2653
Resumo: This works presents numerical predictions for the flow and temperature fields formed by two coaxial streams confined in a duct having a gradually varying cross section segment. The well-known marching-forward method of Patankar-Spalding was used for sweepingthe computational domain. The standard k-e model was applied for handling turbulence. Computations are first performed for laminar cases in order to assess the reliability of the numerical code. Both isothermal and heated flow, in a constant cross section duct, were considered. Results are then presented for developed turbulent pipe flow showing good agreement with experimental values. Computations for coaxial confined turbulent jets are then presented and compared with available experimental data. Non-isothermal results follow showing interesting dissimilarity between turbulent kinetic energy and Nusselt number.
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spelling Turbulent heat transfer and fluid flow in ducts of gradually varying cross section.Escoamento turbulentoTransferência de calorDutosModelos matemáticosAnálise numéricaDinâmica dos fluidos computacionalMecânica dos fluidosFísicaThis works presents numerical predictions for the flow and temperature fields formed by two coaxial streams confined in a duct having a gradually varying cross section segment. The well-known marching-forward method of Patankar-Spalding was used for sweepingthe computational domain. The standard k-e model was applied for handling turbulence. Computations are first performed for laminar cases in order to assess the reliability of the numerical code. Both isothermal and heated flow, in a constant cross section duct, were considered. Results are then presented for developed turbulent pipe flow showing good agreement with experimental values. Computations for coaxial confined turbulent jets are then presented and compared with available experimental data. Non-isothermal results follow showing interesting dissimilarity between turbulent kinetic energy and Nusselt number. Instituto Tecnológico de AeronáuticaMarcelo José Santos de LemosEdimilson Junqueira Braga1999-00-00info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesishttp://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=2653reponame:Biblioteca Digital de Teses e Dissertações do ITAinstname:Instituto Tecnológico de Aeronáuticainstacron:ITAporinfo:eu-repo/semantics/openAccessapplication/pdf2019-02-02T14:04:53Zoai:agregador.ibict.br.BDTD_ITA:oai:ita.br:2653http://oai.bdtd.ibict.br/requestopendoar:null2020-05-28 19:39:40.131Biblioteca Digital de Teses e Dissertações do ITA - Instituto Tecnológico de Aeronáuticatrue
dc.title.none.fl_str_mv Turbulent heat transfer and fluid flow in ducts of gradually varying cross section.
title Turbulent heat transfer and fluid flow in ducts of gradually varying cross section.
spellingShingle Turbulent heat transfer and fluid flow in ducts of gradually varying cross section.
Edimilson Junqueira Braga
Escoamento turbulento
Transferência de calor
Dutos
Modelos matemáticos
Análise numérica
Dinâmica dos fluidos computacional
Mecânica dos fluidos
Física
title_short Turbulent heat transfer and fluid flow in ducts of gradually varying cross section.
title_full Turbulent heat transfer and fluid flow in ducts of gradually varying cross section.
title_fullStr Turbulent heat transfer and fluid flow in ducts of gradually varying cross section.
title_full_unstemmed Turbulent heat transfer and fluid flow in ducts of gradually varying cross section.
title_sort Turbulent heat transfer and fluid flow in ducts of gradually varying cross section.
author Edimilson Junqueira Braga
author_facet Edimilson Junqueira Braga
author_role author
dc.contributor.none.fl_str_mv Marcelo José Santos de Lemos
dc.contributor.author.fl_str_mv Edimilson Junqueira Braga
dc.subject.por.fl_str_mv Escoamento turbulento
Transferência de calor
Dutos
Modelos matemáticos
Análise numérica
Dinâmica dos fluidos computacional
Mecânica dos fluidos
Física
topic Escoamento turbulento
Transferência de calor
Dutos
Modelos matemáticos
Análise numérica
Dinâmica dos fluidos computacional
Mecânica dos fluidos
Física
dc.description.none.fl_txt_mv This works presents numerical predictions for the flow and temperature fields formed by two coaxial streams confined in a duct having a gradually varying cross section segment. The well-known marching-forward method of Patankar-Spalding was used for sweepingthe computational domain. The standard k-e model was applied for handling turbulence. Computations are first performed for laminar cases in order to assess the reliability of the numerical code. Both isothermal and heated flow, in a constant cross section duct, were considered. Results are then presented for developed turbulent pipe flow showing good agreement with experimental values. Computations for coaxial confined turbulent jets are then presented and compared with available experimental data. Non-isothermal results follow showing interesting dissimilarity between turbulent kinetic energy and Nusselt number.
description This works presents numerical predictions for the flow and temperature fields formed by two coaxial streams confined in a duct having a gradually varying cross section segment. The well-known marching-forward method of Patankar-Spalding was used for sweepingthe computational domain. The standard k-e model was applied for handling turbulence. Computations are first performed for laminar cases in order to assess the reliability of the numerical code. Both isothermal and heated flow, in a constant cross section duct, were considered. Results are then presented for developed turbulent pipe flow showing good agreement with experimental values. Computations for coaxial confined turbulent jets are then presented and compared with available experimental data. Non-isothermal results follow showing interesting dissimilarity between turbulent kinetic energy and Nusselt number.
publishDate 1999
dc.date.none.fl_str_mv 1999-00-00
dc.type.driver.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/masterThesis
status_str publishedVersion
format masterThesis
dc.identifier.uri.fl_str_mv http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=2653
url http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=2653
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
dc.publisher.none.fl_str_mv Instituto Tecnológico de Aeronáutica
publisher.none.fl_str_mv Instituto Tecnológico de Aeronáutica
dc.source.none.fl_str_mv reponame:Biblioteca Digital de Teses e Dissertações do ITA
instname:Instituto Tecnológico de Aeronáutica
instacron:ITA
reponame_str Biblioteca Digital de Teses e Dissertações do ITA
collection Biblioteca Digital de Teses e Dissertações do ITA
instname_str Instituto Tecnológico de Aeronáutica
instacron_str ITA
institution ITA
repository.name.fl_str_mv Biblioteca Digital de Teses e Dissertações do ITA - Instituto Tecnológico de Aeronáutica
repository.mail.fl_str_mv
subject_por_txtF_mv Escoamento turbulento
Transferência de calor
Dutos
Modelos matemáticos
Análise numérica
Dinâmica dos fluidos computacional
Mecânica dos fluidos
Física
_version_ 1706805002094247936

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