Turbulence Modeling Insights into Supercritical Nitrogen Mixing Layers
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.6/10256 |
Resumo: | In Liquid Rocket Engines, higher combustion efficiencies come at the cost of the propellants exceeding their critical point conditions and entering the supercritical domain. The term fluid is used because, under these conditions, there is no longer a clear distinction between a liquid and a gas phase. The non-conventional behavior of thermophysical properties makes the modeling of supercritical fluid flows a most challenging task. In the present work, a Reynolds Averaged Navier Stokes (RANS) computational method following an incompressible but variable density approach is devised on which the performance of several turbulence models is compared in conjunction with a high accuracy multi-parameter equation of state. In addition, a suitable methodology to describe transport properties accounting for dense fluid corrections is applied. The results are validated against experimental data, making it clear that there is no trend between turbulence model complexity and the quality of the produced results. For several instances, one- and two-equation turbulence models produce similar results. Finally, considerations about the applicability of the tested turbulence models in supercritical simulations are given based on the results and the structural nature of each model. |
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Turbulence Modeling Insights into Supercritical Nitrogen Mixing LayersTurbulence modelingSupercritical injectionLiquid Rocket EnginesIn Liquid Rocket Engines, higher combustion efficiencies come at the cost of the propellants exceeding their critical point conditions and entering the supercritical domain. The term fluid is used because, under these conditions, there is no longer a clear distinction between a liquid and a gas phase. The non-conventional behavior of thermophysical properties makes the modeling of supercritical fluid flows a most challenging task. In the present work, a Reynolds Averaged Navier Stokes (RANS) computational method following an incompressible but variable density approach is devised on which the performance of several turbulence models is compared in conjunction with a high accuracy multi-parameter equation of state. In addition, a suitable methodology to describe transport properties accounting for dense fluid corrections is applied. The results are validated against experimental data, making it clear that there is no trend between turbulence model complexity and the quality of the produced results. For several instances, one- and two-equation turbulence models produce similar results. Finally, considerations about the applicability of the tested turbulence models in supercritical simulations are given based on the results and the structural nature of each model.Aeronautics and Astronautics Research Center (AEROG), Laboratório Associado em Energia, Transportes e Aeronáutica (LAETA) e Fundação para a Ciência e Tecnologia (FCT)MDPIuBibliorumMagalhães, LeandroCarvalho, FranciscoSilva, A. R. R.Barata, Jorge M M2020-04-07T08:40:41Z2020-04-012020-04-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.6/10256engMagalhães, L.; Carvalho, F.; Silva, A.; Barata, J. Turbulence Modeling Insights into Supercritical Nitrogen Mixing Layers. Energies 2020, 13, 1586.1996-107310.3390/en13071586info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-12-15T09:51:42Zoai:ubibliorum.ubi.pt:10400.6/10256Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:50:15.835372Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Turbulence Modeling Insights into Supercritical Nitrogen Mixing Layers |
title |
Turbulence Modeling Insights into Supercritical Nitrogen Mixing Layers |
spellingShingle |
Turbulence Modeling Insights into Supercritical Nitrogen Mixing Layers Magalhães, Leandro Turbulence modeling Supercritical injection Liquid Rocket Engines |
title_short |
Turbulence Modeling Insights into Supercritical Nitrogen Mixing Layers |
title_full |
Turbulence Modeling Insights into Supercritical Nitrogen Mixing Layers |
title_fullStr |
Turbulence Modeling Insights into Supercritical Nitrogen Mixing Layers |
title_full_unstemmed |
Turbulence Modeling Insights into Supercritical Nitrogen Mixing Layers |
title_sort |
Turbulence Modeling Insights into Supercritical Nitrogen Mixing Layers |
author |
Magalhães, Leandro |
author_facet |
Magalhães, Leandro Carvalho, Francisco Silva, A. R. R. Barata, Jorge M M |
author_role |
author |
author2 |
Carvalho, Francisco Silva, A. R. R. Barata, Jorge M M |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
uBibliorum |
dc.contributor.author.fl_str_mv |
Magalhães, Leandro Carvalho, Francisco Silva, A. R. R. Barata, Jorge M M |
dc.subject.por.fl_str_mv |
Turbulence modeling Supercritical injection Liquid Rocket Engines |
topic |
Turbulence modeling Supercritical injection Liquid Rocket Engines |
description |
In Liquid Rocket Engines, higher combustion efficiencies come at the cost of the propellants exceeding their critical point conditions and entering the supercritical domain. The term fluid is used because, under these conditions, there is no longer a clear distinction between a liquid and a gas phase. The non-conventional behavior of thermophysical properties makes the modeling of supercritical fluid flows a most challenging task. In the present work, a Reynolds Averaged Navier Stokes (RANS) computational method following an incompressible but variable density approach is devised on which the performance of several turbulence models is compared in conjunction with a high accuracy multi-parameter equation of state. In addition, a suitable methodology to describe transport properties accounting for dense fluid corrections is applied. The results are validated against experimental data, making it clear that there is no trend between turbulence model complexity and the quality of the produced results. For several instances, one- and two-equation turbulence models produce similar results. Finally, considerations about the applicability of the tested turbulence models in supercritical simulations are given based on the results and the structural nature of each model. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-04-07T08:40:41Z 2020-04-01 2020-04-01T00:00:00Z |
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/10400.6/10256 |
url |
http://hdl.handle.net/10400.6/10256 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Magalhães, L.; Carvalho, F.; Silva, A.; Barata, J. Turbulence Modeling Insights into Supercritical Nitrogen Mixing Layers. Energies 2020, 13, 1586. 1996-1073 10.3390/en13071586 |
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 |
MDPI |
publisher.none.fl_str_mv |
MDPI |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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