Scale adaptive simulations applied to fully cavitating turbulent flow in injector nozzles

Autores
Coussirat, Miguel; Moll, Flavio
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The unsteady and turbulent pressure-driven cavitating flow under fully cavitation conditions through a sharp-edged orifice is studied by numerical simulations. Unsteady cavitating flow is a typical flow configuration in fuels injectors and brings a challenge in the numerical modeling of two-phase fluid flows due to the high-pressure gradients involved and the high ratio of liquid and vapor density. Under this flow condition computationally intensive unsteady simulations are necessary to accurately simulate the irregular cyclic process of bubble formation, growth, filling by water jet re-entry and its breakoff. The capabilities of Reynolds Averaged Simulations are assessed to ensure a suitable cavity structure prediction to capture the main shedding frequencies and the vapor fraction variations along the nozzle. This study is focused on the performance of a modified version of the Shear Stress Transport turbulence model, involving a Scale Adaptive Simulations sub-model related to the unsteady turbulent flows modeling. The obtained results show that the proposed option would allow studies of developed cavitating flows by means of an unsteady Reynolds Averaged Simulation, computationally less expensive than the Large Eddy Simulations option, being this last option not completely affordable for simulating turbulent flows in industrial problems nowadays.
Fil: Universidad Tecnológica Nacional. Faculatad Regional Mendoza, Argentina
Fuente
Mecánica Computacional (34): 397-406 (2022)
Materia
Developed cavitation, Injectors, Turbulence, Eddy viscosity models, SAS Validation/Calibration
Nivel de accesibilidad
acceso abierto
Condiciones de uso
CC0 1.0 Universal
Repositorio
Repositorio Institucional Abierto (UTN)
Institución
Universidad Tecnológica Nacional
OAI Identificador
oai:ria.utn.edu.ar:20.500.12272/12870
Acceder
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oai_identifier_str oai:ria.utn.edu.ar:20.500.12272/12870
network_acronym_str RIAUTN
repository_id_str a
network_name_str Repositorio Institucional Abierto (UTN)
spelling Scale adaptive simulations applied to fully cavitating turbulent flow in injector nozzlesCoussirat, MiguelMoll, FlavioDeveloped cavitation, Injectors, Turbulence, Eddy viscosity models, SAS Validation/CalibrationThe unsteady and turbulent pressure-driven cavitating flow under fully cavitation conditions through a sharp-edged orifice is studied by numerical simulations. Unsteady cavitating flow is a typical flow configuration in fuels injectors and brings a challenge in the numerical modeling of two-phase fluid flows due to the high-pressure gradients involved and the high ratio of liquid and vapor density. Under this flow condition computationally intensive unsteady simulations are necessary to accurately simulate the irregular cyclic process of bubble formation, growth, filling by water jet re-entry and its breakoff. The capabilities of Reynolds Averaged Simulations are assessed to ensure a suitable cavity structure prediction to capture the main shedding frequencies and the vapor fraction variations along the nozzle. This study is focused on the performance of a modified version of the Shear Stress Transport turbulence model, involving a Scale Adaptive Simulations sub-model related to the unsteady turbulent flows modeling. The obtained results show that the proposed option would allow studies of developed cavitating flows by means of an unsteady Reynolds Averaged Simulation, computationally less expensive than the Large Eddy Simulations option, being this last option not completely affordable for simulating turbulent flows in industrial problems nowadays.Fil: Universidad Tecnológica Nacional. Faculatad Regional Mendoza, ArgentinaUniversidad Tecnológica Nacional. Faculatd Regional Mendoza2025-05-07T14:25:31Z2022-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articulopdfapplication/pdfAsociación Mecánica Computacionalhttps://hdl.handle.net/20.500.12272/12870Mecánica Computacional (34): 397-406 (2022)reponame:Repositorio Institucional Abierto (UTN)instname:Universidad Tecnológica Nacionalenginfo:eu-repo/semantics/openAccessCC0 1.0 Universalhttp://creativecommons.org/publicdomain/zero/1.0/Universidad Tecnológica Nacional, Facultad Regional MendozaCC BY (Autoría) CC BY-NC (Autoría – No Comercial)2026-09-24T12:45:11Zoai:ria.utn.edu.ar:20.500.12272/12870instacron:UTNInstitucionalhttp://ria.utn.edu.ar/Universidad públicaNo correspondehttp://ria.utn.edu.ar/oaigestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:a2026-09-24 12:45:12.561Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacionalfalse
dc.title.none.fl_str_mv Scale adaptive simulations applied to fully cavitating turbulent flow in injector nozzles
title Scale adaptive simulations applied to fully cavitating turbulent flow in injector nozzles
spellingShingle Scale adaptive simulations applied to fully cavitating turbulent flow in injector nozzles
Coussirat, Miguel
Developed cavitation, Injectors, Turbulence, Eddy viscosity models, SAS Validation/Calibration
title_short Scale adaptive simulations applied to fully cavitating turbulent flow in injector nozzles
title_full Scale adaptive simulations applied to fully cavitating turbulent flow in injector nozzles
title_fullStr Scale adaptive simulations applied to fully cavitating turbulent flow in injector nozzles
title_full_unstemmed Scale adaptive simulations applied to fully cavitating turbulent flow in injector nozzles
title_sort Scale adaptive simulations applied to fully cavitating turbulent flow in injector nozzles
dc.creator.none.fl_str_mv Coussirat, Miguel
Moll, Flavio
author Coussirat, Miguel
author_facet Coussirat, Miguel
Moll, Flavio
author_role author
author2 Moll, Flavio
author2_role author
dc.subject.none.fl_str_mv Developed cavitation, Injectors, Turbulence, Eddy viscosity models, SAS Validation/Calibration
topic Developed cavitation, Injectors, Turbulence, Eddy viscosity models, SAS Validation/Calibration
dc.description.none.fl_txt_mv The unsteady and turbulent pressure-driven cavitating flow under fully cavitation conditions through a sharp-edged orifice is studied by numerical simulations. Unsteady cavitating flow is a typical flow configuration in fuels injectors and brings a challenge in the numerical modeling of two-phase fluid flows due to the high-pressure gradients involved and the high ratio of liquid and vapor density. Under this flow condition computationally intensive unsteady simulations are necessary to accurately simulate the irregular cyclic process of bubble formation, growth, filling by water jet re-entry and its breakoff. The capabilities of Reynolds Averaged Simulations are assessed to ensure a suitable cavity structure prediction to capture the main shedding frequencies and the vapor fraction variations along the nozzle. This study is focused on the performance of a modified version of the Shear Stress Transport turbulence model, involving a Scale Adaptive Simulations sub-model related to the unsteady turbulent flows modeling. The obtained results show that the proposed option would allow studies of developed cavitating flows by means of an unsteady Reynolds Averaged Simulation, computationally less expensive than the Large Eddy Simulations option, being this last option not completely affordable for simulating turbulent flows in industrial problems nowadays.
Fil: Universidad Tecnológica Nacional. Faculatad Regional Mendoza, Argentina
description The unsteady and turbulent pressure-driven cavitating flow under fully cavitation conditions through a sharp-edged orifice is studied by numerical simulations. Unsteady cavitating flow is a typical flow configuration in fuels injectors and brings a challenge in the numerical modeling of two-phase fluid flows due to the high-pressure gradients involved and the high ratio of liquid and vapor density. Under this flow condition computationally intensive unsteady simulations are necessary to accurately simulate the irregular cyclic process of bubble formation, growth, filling by water jet re-entry and its breakoff. The capabilities of Reynolds Averaged Simulations are assessed to ensure a suitable cavity structure prediction to capture the main shedding frequencies and the vapor fraction variations along the nozzle. This study is focused on the performance of a modified version of the Shear Stress Transport turbulence model, involving a Scale Adaptive Simulations sub-model related to the unsteady turbulent flows modeling. The obtained results show that the proposed option would allow studies of developed cavitating flows by means of an unsteady Reynolds Averaged Simulation, computationally less expensive than the Large Eddy Simulations option, being this last option not completely affordable for simulating turbulent flows in industrial problems nowadays.
publishDate 2022
dc.date.none.fl_str_mv 2022-04-01
2025-05-07T14:25:31Z
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv Asociación Mecánica Computacional
https://hdl.handle.net/20.500.12272/12870
identifier_str_mv Asociación Mecánica Computacional
url https://hdl.handle.net/20.500.12272/12870
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
CC0 1.0 Universal
http://creativecommons.org/publicdomain/zero/1.0/
Universidad Tecnológica Nacional, Facultad Regional Mendoza
CC BY (Autoría) CC BY-NC (Autoría – No Comercial)
eu_rights_str_mv openAccess
rights_invalid_str_mv CC0 1.0 Universal
http://creativecommons.org/publicdomain/zero/1.0/
Universidad Tecnológica Nacional, Facultad Regional Mendoza
CC BY (Autoría) CC BY-NC (Autoría – No Comercial)
dc.format.none.fl_str_mv pdf
application/pdf
dc.publisher.none.fl_str_mv Universidad Tecnológica Nacional. Faculatd Regional Mendoza
publisher.none.fl_str_mv Universidad Tecnológica Nacional. Faculatd Regional Mendoza
dc.source.none.fl_str_mv Mecánica Computacional (34): 397-406 (2022)
reponame:Repositorio Institucional Abierto (UTN)
instname:Universidad Tecnológica Nacional
reponame_str Repositorio Institucional Abierto (UTN)
collection Repositorio Institucional Abierto (UTN)
instname_str Universidad Tecnológica Nacional
repository.name.fl_str_mv Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacional
repository.mail.fl_str_mv gestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.ar
_version_ 1877230895740485632
score 13.24418

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