A Multiscale Approach for the Numerical Simulation of Turbulent Flows with Droplets

Autores
Gimenez, Juan Marcelo; Idelsohn, Sergio Rodolfo; Oñate, Eugenio; Löhner, Rainald
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A multiscale approach for the detailed simulation of water droplets dispersed in a turbulent airflow is presented. The multiscale procedure combines a novel representative volume element (RVE) with the Pseudo Direct Numerical Simulation (P-DNS) method. The solution at the coarse-scale relies on a synthetic model, constructed using precomputed offline RVE simulations and an alternating digital tree, to characterize the non-linear dynamic response at the fine-scale. A set of numerical experiments for a wide range of volume fractions, particle distribution sizes, and external shear forces in the RVE are carried out. Quantitative results of the statistically stationary turbulent state are obtained, and the turbulence modulation phenomenon due to the presence of droplets is discussed. The developed synthetic model is then employed to solve global scale simulations of flows with airborne droplets via the P-DNS method. Improved predictions are obtained for flow conditions where turbulence modulation is noticeable.
Fil: Gimenez, Juan Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; Argentina
Fil: Idelsohn, Sergio Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Oñate, Eugenio. Universidad Politécnica de Catalunya; España
Fil: Löhner, Rainald. George Mason University; Estados Unidos
Materia
Pseudo Direct Numerical Simulation
Discrete Particle Method
Turbulence Modulation
Direct Numerical Simulation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/184627
Acceder
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spelling A Multiscale Approach for the Numerical Simulation of Turbulent Flows with DropletsGimenez, Juan MarceloIdelsohn, Sergio RodolfoOñate, EugenioLöhner, RainaldPseudo Direct Numerical SimulationDiscrete Particle MethodTurbulence ModulationDirect Numerical Simulationhttps://purl.org/becyt/ford/2.3https://purl.org/becyt/ford/2A multiscale approach for the detailed simulation of water droplets dispersed in a turbulent airflow is presented. The multiscale procedure combines a novel representative volume element (RVE) with the Pseudo Direct Numerical Simulation (P-DNS) method. The solution at the coarse-scale relies on a synthetic model, constructed using precomputed offline RVE simulations and an alternating digital tree, to characterize the non-linear dynamic response at the fine-scale. A set of numerical experiments for a wide range of volume fractions, particle distribution sizes, and external shear forces in the RVE are carried out. Quantitative results of the statistically stationary turbulent state are obtained, and the turbulence modulation phenomenon due to the presence of droplets is discussed. The developed synthetic model is then employed to solve global scale simulations of flows with airborne droplets via the P-DNS method. Improved predictions are obtained for flow conditions where turbulence modulation is noticeable.Fil: Gimenez, Juan Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; ArgentinaFil: Idelsohn, Sergio Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Oñate, Eugenio. Universidad Politécnica de Catalunya; EspañaFil: Löhner, Rainald. George Mason University; Estados UnidosSpringer2021-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/184627Gimenez, Juan Marcelo; Idelsohn, Sergio Rodolfo; Oñate, Eugenio; Löhner, Rainald; A Multiscale Approach for the Numerical Simulation of Turbulent Flows with Droplets; Springer; Archives Of Computational Methods In Engineering; 28; 6; 10-2021; 4185-42041134-3060CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1007/s11831-021-09614-6info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:38:39Zoai:ri.conicet.gov.ar:11336/184627instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 14:38:40.031CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A Multiscale Approach for the Numerical Simulation of Turbulent Flows with Droplets
title A Multiscale Approach for the Numerical Simulation of Turbulent Flows with Droplets
spellingShingle A Multiscale Approach for the Numerical Simulation of Turbulent Flows with Droplets
Gimenez, Juan Marcelo
Pseudo Direct Numerical Simulation
Discrete Particle Method
Turbulence Modulation
Direct Numerical Simulation
title_short A Multiscale Approach for the Numerical Simulation of Turbulent Flows with Droplets
title_full A Multiscale Approach for the Numerical Simulation of Turbulent Flows with Droplets
title_fullStr A Multiscale Approach for the Numerical Simulation of Turbulent Flows with Droplets
title_full_unstemmed A Multiscale Approach for the Numerical Simulation of Turbulent Flows with Droplets
title_sort A Multiscale Approach for the Numerical Simulation of Turbulent Flows with Droplets
dc.creator.none.fl_str_mv Gimenez, Juan Marcelo
Idelsohn, Sergio Rodolfo
Oñate, Eugenio
Löhner, Rainald
author Gimenez, Juan Marcelo
author_facet Gimenez, Juan Marcelo
Idelsohn, Sergio Rodolfo
Oñate, Eugenio
Löhner, Rainald
author_role author
author2 Idelsohn, Sergio Rodolfo
Oñate, Eugenio
Löhner, Rainald
author2_role author
author
author
dc.subject.none.fl_str_mv Pseudo Direct Numerical Simulation
Discrete Particle Method
Turbulence Modulation
Direct Numerical Simulation
topic Pseudo Direct Numerical Simulation
Discrete Particle Method
Turbulence Modulation
Direct Numerical Simulation
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.3
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv A multiscale approach for the detailed simulation of water droplets dispersed in a turbulent airflow is presented. The multiscale procedure combines a novel representative volume element (RVE) with the Pseudo Direct Numerical Simulation (P-DNS) method. The solution at the coarse-scale relies on a synthetic model, constructed using precomputed offline RVE simulations and an alternating digital tree, to characterize the non-linear dynamic response at the fine-scale. A set of numerical experiments for a wide range of volume fractions, particle distribution sizes, and external shear forces in the RVE are carried out. Quantitative results of the statistically stationary turbulent state are obtained, and the turbulence modulation phenomenon due to the presence of droplets is discussed. The developed synthetic model is then employed to solve global scale simulations of flows with airborne droplets via the P-DNS method. Improved predictions are obtained for flow conditions where turbulence modulation is noticeable.
Fil: Gimenez, Juan Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; Argentina
Fil: Idelsohn, Sergio Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Oñate, Eugenio. Universidad Politécnica de Catalunya; España
Fil: Löhner, Rainald. George Mason University; Estados Unidos
description A multiscale approach for the detailed simulation of water droplets dispersed in a turbulent airflow is presented. The multiscale procedure combines a novel representative volume element (RVE) with the Pseudo Direct Numerical Simulation (P-DNS) method. The solution at the coarse-scale relies on a synthetic model, constructed using precomputed offline RVE simulations and an alternating digital tree, to characterize the non-linear dynamic response at the fine-scale. A set of numerical experiments for a wide range of volume fractions, particle distribution sizes, and external shear forces in the RVE are carried out. Quantitative results of the statistically stationary turbulent state are obtained, and the turbulence modulation phenomenon due to the presence of droplets is discussed. The developed synthetic model is then employed to solve global scale simulations of flows with airborne droplets via the P-DNS method. Improved predictions are obtained for flow conditions where turbulence modulation is noticeable.
publishDate 2021
dc.date.none.fl_str_mv 2021-10
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 http://hdl.handle.net/11336/184627
Gimenez, Juan Marcelo; Idelsohn, Sergio Rodolfo; Oñate, Eugenio; Löhner, Rainald; A Multiscale Approach for the Numerical Simulation of Turbulent Flows with Droplets; Springer; Archives Of Computational Methods In Engineering; 28; 6; 10-2021; 4185-4204
1134-3060
CONICET Digital
CONICET
url http://hdl.handle.net/11336/184627
identifier_str_mv Gimenez, Juan Marcelo; Idelsohn, Sergio Rodolfo; Oñate, Eugenio; Löhner, Rainald; A Multiscale Approach for the Numerical Simulation of Turbulent Flows with Droplets; Springer; Archives Of Computational Methods In Engineering; 28; 6; 10-2021; 4185-4204
1134-3060
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1007/s11831-021-09614-6
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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