Numerical study of cavitating flow in asymmetrical nozzles of injectors/atomizer. assessment of calibrated eddy viscosity models in developing cavitation case I

Autores
Coussirat, Miguel; Moll, Flavio
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión aceptada
Descripción
Cavitating flow is related to turbulent and multiphase flows with mass transfer between the liquid and its gaseous phase. Cavitation in pressure injectors/atomizers strongly affects the liquid/spray jet behavior at its outlet. The type of atomization induced by cavitation allows developing more efficient devices if this cavitation state is controlled. Experiments show that an improvement in the quality of the spray is reached when a fully developed cavitation state is present at the nozzle, being this state clearly unsteady due to the presence of the re-entrant jet and the vortex shedding downstream of the cavity. Previous works showed that it is possible to capture several of the incipient cavitating or quasi- steady cavitating flow characteristics performing a careful calibration of the available Eddy Viscosity Models in nozzles with several inlet and outlet geometries. A careful calibration of the selected Eddy Viscosity Model becomes an important task to obtain accurate predictions of the flow both in quasi- steady and unsteady cavitation states. The numerical results discussed in this first part show that it is possible to capture the main cavity features by a steady state cavitation simulation despite the incipient unsteady state of the slightly developed cavitation state. It is demonstrated that the obtained results become competitive when they are compared against ones computed by Large Eddy Simulations which need a lot of computational resources and an appropriate initial solution for running. The possibility to perform unsteady simulations using Eddy Viscosity Models is explored. As a first step, a discussion of the experimental data available for fully developed cavitation cases and the developed simulation strategies to carry out these cases are presented.
Fil: Universidad Tecnológica Nacional. Facultad Regional Mendoza, Argentina
Peer Reviewed
Fuente
Mecánica Computacional (37), 785-794. (2021)
Materia
Developed Cavitation, Injectors, Atomizers, Turbulence, Eddy Viscosity Models, Validation/Calibration.
Nivel de accesibilidad
acceso abierto
Condiciones de uso
2024-04-11T12:29:40Z
Repositorio
Repositorio Institucional Abierto (UTN)
Institución
Universidad Tecnológica Nacional
OAI Identificador
oai:ria.utn.edu.ar:20.500.12272/10453
Acceder
id RIAUTN_697f210aeb72d7cb3f67645f499fa47e
oai_identifier_str oai:ria.utn.edu.ar:20.500.12272/10453
network_acronym_str RIAUTN
repository_id_str a
network_name_str Repositorio Institucional Abierto (UTN)
spelling Numerical study of cavitating flow in asymmetrical nozzles of injectors/atomizer. assessment of calibrated eddy viscosity models in developing cavitation case ICoussirat, MiguelMoll, FlavioDeveloped Cavitation, Injectors, Atomizers, Turbulence, Eddy Viscosity Models, Validation/Calibration.Cavitating flow is related to turbulent and multiphase flows with mass transfer between the liquid and its gaseous phase. Cavitation in pressure injectors/atomizers strongly affects the liquid/spray jet behavior at its outlet. The type of atomization induced by cavitation allows developing more efficient devices if this cavitation state is controlled. Experiments show that an improvement in the quality of the spray is reached when a fully developed cavitation state is present at the nozzle, being this state clearly unsteady due to the presence of the re-entrant jet and the vortex shedding downstream of the cavity. Previous works showed that it is possible to capture several of the incipient cavitating or quasi- steady cavitating flow characteristics performing a careful calibration of the available Eddy Viscosity Models in nozzles with several inlet and outlet geometries. A careful calibration of the selected Eddy Viscosity Model becomes an important task to obtain accurate predictions of the flow both in quasi- steady and unsteady cavitation states. The numerical results discussed in this first part show that it is possible to capture the main cavity features by a steady state cavitation simulation despite the incipient unsteady state of the slightly developed cavitation state. It is demonstrated that the obtained results become competitive when they are compared against ones computed by Large Eddy Simulations which need a lot of computational resources and an appropriate initial solution for running. The possibility to perform unsteady simulations using Eddy Viscosity Models is explored. As a first step, a discussion of the experimental data available for fully developed cavitation cases and the developed simulation strategies to carry out these cases are presented.Fil: Universidad Tecnológica Nacional. Facultad Regional Mendoza, ArgentinaPeer Reviewed2024-04-11T12:29:40Z2024-04-11T12:29:40Z2021-11-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articulopdfapplication/pdfhttp://hdl.handle.net/20.500.12272/10453*Mecánica Computacional (37), 785-794. (2021)reponame:Repositorio Institucional Abierto (UTN)instname:Universidad Tecnológica Nacionalenginfo:eu-repo/semantics/openAccess2024-04-11T12:29:40Zhttp://creativecommons.org/publicdomain/zero/1.0/CC0 1.0 UniversalUniversidad Tecnológica Nacional. Facultad Regional MendozaAtribución2026-09-24T12:47:10Zoai:ria.utn.edu.ar:20.500.12272/10453instacron: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 12:47:12.147Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacionalfalse
dc.title.none.fl_str_mv Numerical study of cavitating flow in asymmetrical nozzles of injectors/atomizer. assessment of calibrated eddy viscosity models in developing cavitation case I
title Numerical study of cavitating flow in asymmetrical nozzles of injectors/atomizer. assessment of calibrated eddy viscosity models in developing cavitation case I
spellingShingle Numerical study of cavitating flow in asymmetrical nozzles of injectors/atomizer. assessment of calibrated eddy viscosity models in developing cavitation case I
Coussirat, Miguel
Developed Cavitation, Injectors, Atomizers, Turbulence, Eddy Viscosity Models, Validation/Calibration.
title_short Numerical study of cavitating flow in asymmetrical nozzles of injectors/atomizer. assessment of calibrated eddy viscosity models in developing cavitation case I
title_full Numerical study of cavitating flow in asymmetrical nozzles of injectors/atomizer. assessment of calibrated eddy viscosity models in developing cavitation case I
title_fullStr Numerical study of cavitating flow in asymmetrical nozzles of injectors/atomizer. assessment of calibrated eddy viscosity models in developing cavitation case I
title_full_unstemmed Numerical study of cavitating flow in asymmetrical nozzles of injectors/atomizer. assessment of calibrated eddy viscosity models in developing cavitation case I
title_sort Numerical study of cavitating flow in asymmetrical nozzles of injectors/atomizer. assessment of calibrated eddy viscosity models in developing cavitation case I
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, Atomizers, Turbulence, Eddy Viscosity Models, Validation/Calibration.
topic Developed Cavitation, Injectors, Atomizers, Turbulence, Eddy Viscosity Models, Validation/Calibration.
dc.description.none.fl_txt_mv Cavitating flow is related to turbulent and multiphase flows with mass transfer between the liquid and its gaseous phase. Cavitation in pressure injectors/atomizers strongly affects the liquid/spray jet behavior at its outlet. The type of atomization induced by cavitation allows developing more efficient devices if this cavitation state is controlled. Experiments show that an improvement in the quality of the spray is reached when a fully developed cavitation state is present at the nozzle, being this state clearly unsteady due to the presence of the re-entrant jet and the vortex shedding downstream of the cavity. Previous works showed that it is possible to capture several of the incipient cavitating or quasi- steady cavitating flow characteristics performing a careful calibration of the available Eddy Viscosity Models in nozzles with several inlet and outlet geometries. A careful calibration of the selected Eddy Viscosity Model becomes an important task to obtain accurate predictions of the flow both in quasi- steady and unsteady cavitation states. The numerical results discussed in this first part show that it is possible to capture the main cavity features by a steady state cavitation simulation despite the incipient unsteady state of the slightly developed cavitation state. It is demonstrated that the obtained results become competitive when they are compared against ones computed by Large Eddy Simulations which need a lot of computational resources and an appropriate initial solution for running. The possibility to perform unsteady simulations using Eddy Viscosity Models is explored. As a first step, a discussion of the experimental data available for fully developed cavitation cases and the developed simulation strategies to carry out these cases are presented.
Fil: Universidad Tecnológica Nacional. Facultad Regional Mendoza, Argentina
Peer Reviewed
description Cavitating flow is related to turbulent and multiphase flows with mass transfer between the liquid and its gaseous phase. Cavitation in pressure injectors/atomizers strongly affects the liquid/spray jet behavior at its outlet. The type of atomization induced by cavitation allows developing more efficient devices if this cavitation state is controlled. Experiments show that an improvement in the quality of the spray is reached when a fully developed cavitation state is present at the nozzle, being this state clearly unsteady due to the presence of the re-entrant jet and the vortex shedding downstream of the cavity. Previous works showed that it is possible to capture several of the incipient cavitating or quasi- steady cavitating flow characteristics performing a careful calibration of the available Eddy Viscosity Models in nozzles with several inlet and outlet geometries. A careful calibration of the selected Eddy Viscosity Model becomes an important task to obtain accurate predictions of the flow both in quasi- steady and unsteady cavitation states. The numerical results discussed in this first part show that it is possible to capture the main cavity features by a steady state cavitation simulation despite the incipient unsteady state of the slightly developed cavitation state. It is demonstrated that the obtained results become competitive when they are compared against ones computed by Large Eddy Simulations which need a lot of computational resources and an appropriate initial solution for running. The possibility to perform unsteady simulations using Eddy Viscosity Models is explored. As a first step, a discussion of the experimental data available for fully developed cavitation cases and the developed simulation strategies to carry out these cases are presented.
publishDate 2021
dc.date.none.fl_str_mv 2021-11-01
2024-04-11T12:29:40Z
2024-04-11T12:29:40Z
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12272/10453
*
url http://hdl.handle.net/20.500.12272/10453
identifier_str_mv *
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
2024-04-11T12:29:40Z
http://creativecommons.org/publicdomain/zero/1.0/
CC0 1.0 Universal
Universidad Tecnológica Nacional. Facultad Regional Mendoza
Atribución
eu_rights_str_mv openAccess
rights_invalid_str_mv 2024-04-11T12:29:40Z
http://creativecommons.org/publicdomain/zero/1.0/
CC0 1.0 Universal
Universidad Tecnológica Nacional. Facultad Regional Mendoza
Atribución
dc.format.none.fl_str_mv pdf
application/pdf
dc.source.none.fl_str_mv Mecánica Computacional (37), 785-794. (2021)
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_ 1877230934058598400
score 13.24418

Publicaciones similares