Eulerian-lagrangian simulation of a turbulent evaporating spray

Detalhes bibliográficos
Ano de defesa: 2011
Autor(a) principal: Rodrigo Badia Piccinini
Orientador(a): Não Informado pela instituição
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: eng
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:
Pulverizadores
Escoamento multifásico
Combustão
Método de volumes finitos
Análise numérica
Simulação do escoamento
Física
Link de acesso: http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=1995
Resumo: This work consists in a numerical simulation of a spray jet: a two-phase flow composed by a gaseous and a liquid phase. The gaseous phase is treated as a continuous medium, and the liquid phase is treated as a dispersed phase. An asymptotic approximation of zero Mach number was applied to the gaseous phase in order to account for density variations due to temperature gradients without dealing with extra complexities of the fully compressible flow formulation. The effects of turbulence on the gas flow were modeled using the concept of turbulent viscosity determined by a system of two partial differential equations, the so called k-epsilon model. The liquid dispersed phase was modeled as point-particles, to whom thermodynamic properties and 0-d models for momentum, heat and mass transfers were assigned. The gaseous phase was discretized and numerically solved using the finite volume method. The numerical results were compared to measurements and a reasonable prediction was found. It was verified, though, underestimations of droplet velocity and evaporation rate.
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network_name_str Biblioteca Digital de Teses e Dissertações do ITA
spelling Eulerian-lagrangian simulation of a turbulent evaporating sprayPulverizadoresEscoamento multifásicoCombustãoMétodo de volumes finitosAnálise numéricaSimulação do escoamentoFísicaThis work consists in a numerical simulation of a spray jet: a two-phase flow composed by a gaseous and a liquid phase. The gaseous phase is treated as a continuous medium, and the liquid phase is treated as a dispersed phase. An asymptotic approximation of zero Mach number was applied to the gaseous phase in order to account for density variations due to temperature gradients without dealing with extra complexities of the fully compressible flow formulation. The effects of turbulence on the gas flow were modeled using the concept of turbulent viscosity determined by a system of two partial differential equations, the so called k-epsilon model. The liquid dispersed phase was modeled as point-particles, to whom thermodynamic properties and 0-d models for momentum, heat and mass transfers were assigned. The gaseous phase was discretized and numerically solved using the finite volume method. The numerical results were compared to measurements and a reasonable prediction was found. It was verified, though, underestimations of droplet velocity and evaporation rate.Instituto Tecnológico de AeronáuticaMarcelo José Santos de LemosRodrigo Badia Piccinini2011-11-25info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesishttp://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=1995reponame:Biblioteca Digital de Teses e Dissertações do ITAinstname:Instituto Tecnológico de Aeronáuticainstacron:ITAenginfo:eu-repo/semantics/openAccessapplication/pdf2019-02-02T14:03:45Zoai:agregador.ibict.br.BDTD_ITA:oai:ita.br:1995http://oai.bdtd.ibict.br/requestopendoar:null2020-05-28 19:37:50.168Biblioteca Digital de Teses e Dissertações do ITA - Instituto Tecnológico de Aeronáuticatrue
dc.title.none.fl_str_mv Eulerian-lagrangian simulation of a turbulent evaporating spray
title Eulerian-lagrangian simulation of a turbulent evaporating spray
spellingShingle Eulerian-lagrangian simulation of a turbulent evaporating spray
Rodrigo Badia Piccinini
Pulverizadores
Escoamento multifásico
Combustão
Método de volumes finitos
Análise numérica
Simulação do escoamento
Física
title_short Eulerian-lagrangian simulation of a turbulent evaporating spray
title_full Eulerian-lagrangian simulation of a turbulent evaporating spray
title_fullStr Eulerian-lagrangian simulation of a turbulent evaporating spray
title_full_unstemmed Eulerian-lagrangian simulation of a turbulent evaporating spray
title_sort Eulerian-lagrangian simulation of a turbulent evaporating spray
author Rodrigo Badia Piccinini
author_facet Rodrigo Badia Piccinini
author_role author
dc.contributor.none.fl_str_mv Marcelo José Santos de Lemos
dc.contributor.author.fl_str_mv Rodrigo Badia Piccinini
dc.subject.por.fl_str_mv Pulverizadores
Escoamento multifásico
Combustão
Método de volumes finitos
Análise numérica
Simulação do escoamento
Física
topic Pulverizadores
Escoamento multifásico
Combustão
Método de volumes finitos
Análise numérica
Simulação do escoamento
Física
dc.description.none.fl_txt_mv This work consists in a numerical simulation of a spray jet: a two-phase flow composed by a gaseous and a liquid phase. The gaseous phase is treated as a continuous medium, and the liquid phase is treated as a dispersed phase. An asymptotic approximation of zero Mach number was applied to the gaseous phase in order to account for density variations due to temperature gradients without dealing with extra complexities of the fully compressible flow formulation. The effects of turbulence on the gas flow were modeled using the concept of turbulent viscosity determined by a system of two partial differential equations, the so called k-epsilon model. The liquid dispersed phase was modeled as point-particles, to whom thermodynamic properties and 0-d models for momentum, heat and mass transfers were assigned. The gaseous phase was discretized and numerically solved using the finite volume method. The numerical results were compared to measurements and a reasonable prediction was found. It was verified, though, underestimations of droplet velocity and evaporation rate.
description This work consists in a numerical simulation of a spray jet: a two-phase flow composed by a gaseous and a liquid phase. The gaseous phase is treated as a continuous medium, and the liquid phase is treated as a dispersed phase. An asymptotic approximation of zero Mach number was applied to the gaseous phase in order to account for density variations due to temperature gradients without dealing with extra complexities of the fully compressible flow formulation. The effects of turbulence on the gas flow were modeled using the concept of turbulent viscosity determined by a system of two partial differential equations, the so called k-epsilon model. The liquid dispersed phase was modeled as point-particles, to whom thermodynamic properties and 0-d models for momentum, heat and mass transfers were assigned. The gaseous phase was discretized and numerically solved using the finite volume method. The numerical results were compared to measurements and a reasonable prediction was found. It was verified, though, underestimations of droplet velocity and evaporation rate.
publishDate 2011
dc.date.none.fl_str_mv 2011-11-25
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=1995
url http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=1995
dc.language.iso.fl_str_mv eng
language eng
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 Pulverizadores
Escoamento multifásico
Combustão
Método de volumes finitos
Análise numérica
Simulação do escoamento
Física
_version_ 1706804996978245632

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