Inertial Density Currents over Porous Media Limited by Different Lower Boundary Conditions

Autores
Thomas, Luis Pablo; Marino, Beatriz Maria
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We study the evolution of two-dimensional high-Reynolds-number density currents propagating over horizontal porous substrates initially saturated with a lighter fluid when an impermeable surface under the bed is used and a Darcy flow through the medium takes place. Laboratory experiments were performed varying the initial characteristic parameters such as the volume released, the height-to-width ratio of the dense fluid, the relative density difference between the current and ambient fluids, and the bed depth. The dynamic changes of the gravitydriven flow and the influence of the thickness of the porous substrate are described by means of an empirical analysis that considers two lower boundary conditions of the bed, that is, when it is bounded from below by an impermeable or a permeable layer. Thus, the new experimental results are integrated to previous findings in a unified theoretical treatment. In the present case, the dense fluid penetrates into the porous layer pushing the lighter one through the upper boundary located ahead of the current, as shown by the vorticity distribution, and modifying the interaction between the flows over and inside the bed. This flow in the neighborhood of the front, although important, is smaller than the one that would pass through the lower boundary if this were permeable.
Fil: Thomas, Luis Pablo. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Tandil. Sede Tandil del Centro de Investigaciones En Fisica E Ingenieria del Centro de la Provincia de Buenos Aires; Argentina
Fil: Marino, Beatriz Maria. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Tandil. Sede Tandil del Centro de Investigaciones En Fisica E Ingenieria del Centro de la Provincia de Buenos Aires; Argentina
Materia
DENSITY CURRENTS
POROUS MEDIA
STRATIFIED FLOW
LABORATORY MEASUREMENTS
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:11336/208808
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Inertial Density Currents over Porous Media Limited by Different Lower Boundary ConditionsThomas, Luis PabloMarino, Beatriz MariaDENSITY CURRENTSPOROUS MEDIASTRATIFIED FLOWLABORATORY MEASUREMENTShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We study the evolution of two-dimensional high-Reynolds-number density currents propagating over horizontal porous substrates initially saturated with a lighter fluid when an impermeable surface under the bed is used and a Darcy flow through the medium takes place. Laboratory experiments were performed varying the initial characteristic parameters such as the volume released, the height-to-width ratio of the dense fluid, the relative density difference between the current and ambient fluids, and the bed depth. The dynamic changes of the gravitydriven flow and the influence of the thickness of the porous substrate are described by means of an empirical analysis that considers two lower boundary conditions of the bed, that is, when it is bounded from below by an impermeable or a permeable layer. Thus, the new experimental results are integrated to previous findings in a unified theoretical treatment. In the present case, the dense fluid penetrates into the porous layer pushing the lighter one through the upper boundary located ahead of the current, as shown by the vorticity distribution, and modifying the interaction between the flows over and inside the bed. This flow in the neighborhood of the front, although important, is smaller than the one that would pass through the lower boundary if this were permeable.Fil: Thomas, Luis Pablo. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Tandil. Sede Tandil del Centro de Investigaciones En Fisica E Ingenieria del Centro de la Provincia de Buenos Aires; ArgentinaFil: Marino, Beatriz Maria. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Tandil. Sede Tandil del Centro de Investigaciones En Fisica E Ingenieria del Centro de la Provincia de Buenos Aires; ArgentinaAmerican Society of Civil Engineers2011-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/208808Thomas, Luis Pablo; Marino, Beatriz Maria; Inertial Density Currents over Porous Media Limited by Different Lower Boundary Conditions; American Society of Civil Engineers; Journal of Hydraulic Engineering; 138; 2; 6-2011; 133-1420733-9429CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://ascelibrary.org/doi/10.1061/%28ASCE%29HY.1943-7900.0000477info:eu-repo/semantics/altIdentifier/doi/10.1061/(ASCE)HY.1943-7900.0000477info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:03:10Zoai:ri.conicet.gov.ar:11336/208808instacron: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:34982025-09-29 10:03:10.42CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Inertial Density Currents over Porous Media Limited by Different Lower Boundary Conditions
title Inertial Density Currents over Porous Media Limited by Different Lower Boundary Conditions
spellingShingle Inertial Density Currents over Porous Media Limited by Different Lower Boundary Conditions
Thomas, Luis Pablo
DENSITY CURRENTS
POROUS MEDIA
STRATIFIED FLOW
LABORATORY MEASUREMENTS
title_short Inertial Density Currents over Porous Media Limited by Different Lower Boundary Conditions
title_full Inertial Density Currents over Porous Media Limited by Different Lower Boundary Conditions
title_fullStr Inertial Density Currents over Porous Media Limited by Different Lower Boundary Conditions
title_full_unstemmed Inertial Density Currents over Porous Media Limited by Different Lower Boundary Conditions
title_sort Inertial Density Currents over Porous Media Limited by Different Lower Boundary Conditions
dc.creator.none.fl_str_mv Thomas, Luis Pablo
Marino, Beatriz Maria
author Thomas, Luis Pablo
author_facet Thomas, Luis Pablo
Marino, Beatriz Maria
author_role author
author2 Marino, Beatriz Maria
author2_role author
dc.subject.none.fl_str_mv DENSITY CURRENTS
POROUS MEDIA
STRATIFIED FLOW
LABORATORY MEASUREMENTS
topic DENSITY CURRENTS
POROUS MEDIA
STRATIFIED FLOW
LABORATORY MEASUREMENTS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We study the evolution of two-dimensional high-Reynolds-number density currents propagating over horizontal porous substrates initially saturated with a lighter fluid when an impermeable surface under the bed is used and a Darcy flow through the medium takes place. Laboratory experiments were performed varying the initial characteristic parameters such as the volume released, the height-to-width ratio of the dense fluid, the relative density difference between the current and ambient fluids, and the bed depth. The dynamic changes of the gravitydriven flow and the influence of the thickness of the porous substrate are described by means of an empirical analysis that considers two lower boundary conditions of the bed, that is, when it is bounded from below by an impermeable or a permeable layer. Thus, the new experimental results are integrated to previous findings in a unified theoretical treatment. In the present case, the dense fluid penetrates into the porous layer pushing the lighter one through the upper boundary located ahead of the current, as shown by the vorticity distribution, and modifying the interaction between the flows over and inside the bed. This flow in the neighborhood of the front, although important, is smaller than the one that would pass through the lower boundary if this were permeable.
Fil: Thomas, Luis Pablo. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Tandil. Sede Tandil del Centro de Investigaciones En Fisica E Ingenieria del Centro de la Provincia de Buenos Aires; Argentina
Fil: Marino, Beatriz Maria. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Tandil. Sede Tandil del Centro de Investigaciones En Fisica E Ingenieria del Centro de la Provincia de Buenos Aires; Argentina
description We study the evolution of two-dimensional high-Reynolds-number density currents propagating over horizontal porous substrates initially saturated with a lighter fluid when an impermeable surface under the bed is used and a Darcy flow through the medium takes place. Laboratory experiments were performed varying the initial characteristic parameters such as the volume released, the height-to-width ratio of the dense fluid, the relative density difference between the current and ambient fluids, and the bed depth. The dynamic changes of the gravitydriven flow and the influence of the thickness of the porous substrate are described by means of an empirical analysis that considers two lower boundary conditions of the bed, that is, when it is bounded from below by an impermeable or a permeable layer. Thus, the new experimental results are integrated to previous findings in a unified theoretical treatment. In the present case, the dense fluid penetrates into the porous layer pushing the lighter one through the upper boundary located ahead of the current, as shown by the vorticity distribution, and modifying the interaction between the flows over and inside the bed. This flow in the neighborhood of the front, although important, is smaller than the one that would pass through the lower boundary if this were permeable.
publishDate 2011
dc.date.none.fl_str_mv 2011-06
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/11336/208808
Thomas, Luis Pablo; Marino, Beatriz Maria; Inertial Density Currents over Porous Media Limited by Different Lower Boundary Conditions; American Society of Civil Engineers; Journal of Hydraulic Engineering; 138; 2; 6-2011; 133-142
0733-9429
CONICET Digital
CONICET
url http://hdl.handle.net/11336/208808
identifier_str_mv Thomas, Luis Pablo; Marino, Beatriz Maria; Inertial Density Currents over Porous Media Limited by Different Lower Boundary Conditions; American Society of Civil Engineers; Journal of Hydraulic Engineering; 138; 2; 6-2011; 133-142
0733-9429
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://ascelibrary.org/doi/10.1061/%28ASCE%29HY.1943-7900.0000477
info:eu-repo/semantics/altIdentifier/doi/10.1061/(ASCE)HY.1943-7900.0000477
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
application/pdf
dc.publisher.none.fl_str_mv American Society of Civil Engineers
publisher.none.fl_str_mv American Society of Civil Engineers
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 13.070432

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