Time dependence and local structure of tracer dispersion in oscillating liquid Hele-Shaw flows
- Autores
- Roht, Yanina Lucrecia; Auradou, H.; Hulin, J. P.; Salin, D.; Chertcoff, Ricardo Héctor; Ippolito, Irene Paula
- Año de publicación
- 2015
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Passive tracer dispersion in oscillating Poiseuille liquid flows of zero net velocity is studied experimentally in a Hele-Shaw cell and numerically by 2D simulations: this study is particularly focused on the time dependence and local properties of the dispersion. The dispersion mechanism is found to be controlled by the ratio τm/T of the molecular diffusion time across the gap and the oscillation period (when molecular diffusion parallel to the flow is negligible). The 2D numerical simulations complement the experiments by providing the local concentration c(x,z,t) at a given distance z from the cell walls (instead of only the average over z). Above a time lapse scaling like τm, the variation of c with the distance x along the flow becomes a Gaussian of width constant with z while the mean distance ¯x may depend both on z and t. For τm/T . 2, the front spreads through Taylor-like dispersion and the normalized dispersivity scales as τm/T. The front oscillates parallel to the flow with an amplitude constant across the gap; its width increases monotonically at a rate modulated at twice the flow frequency, due to variations of the instantaneous dispersivity. For τm/T & 20, the molecular diffusion distance during a period of the flow is smaller than the gap and the normalized dispersivity scales as (τm/T)−1 . The oscillations of the different points of the front follow the local fluid velocity: this produces a reversible modulation of the global front width at twice the flow frequency and in quadrature with that in the Taylor-like regime.
Fil: Roht, Yanina Lucrecia. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física. Grupo de Medios Porosos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Auradou, H.. Université Paris Sud; Francia
Fil: Hulin, J. P.. Université Paris Sud; Francia
Fil: Salin, D.. Université Paris Sud; Francia
Fil: Chertcoff, Ricardo Héctor. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física. Grupo de Medios Porosos; Argentina
Fil: Ippolito, Irene Paula. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física. Grupo de Medios Porosos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina - Materia
-
DISPERSION
OSCILLATION
FRACTURE - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/41738
Ver los metadatos del registro completo
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Time dependence and local structure of tracer dispersion in oscillating liquid Hele-Shaw flowsRoht, Yanina LucreciaAuradou, H.Hulin, J. P.Salin, D.Chertcoff, Ricardo HéctorIppolito, Irene PaulaDISPERSIONOSCILLATIONFRACTUREhttps://purl.org/becyt/ford/2.7https://purl.org/becyt/ford/2Passive tracer dispersion in oscillating Poiseuille liquid flows of zero net velocity is studied experimentally in a Hele-Shaw cell and numerically by 2D simulations: this study is particularly focused on the time dependence and local properties of the dispersion. The dispersion mechanism is found to be controlled by the ratio τm/T of the molecular diffusion time across the gap and the oscillation period (when molecular diffusion parallel to the flow is negligible). The 2D numerical simulations complement the experiments by providing the local concentration c(x,z,t) at a given distance z from the cell walls (instead of only the average over z). Above a time lapse scaling like τm, the variation of c with the distance x along the flow becomes a Gaussian of width constant with z while the mean distance ¯x may depend both on z and t. For τm/T . 2, the front spreads through Taylor-like dispersion and the normalized dispersivity scales as τm/T. The front oscillates parallel to the flow with an amplitude constant across the gap; its width increases monotonically at a rate modulated at twice the flow frequency, due to variations of the instantaneous dispersivity. For τm/T & 20, the molecular diffusion distance during a period of the flow is smaller than the gap and the normalized dispersivity scales as (τm/T)−1 . The oscillations of the different points of the front follow the local fluid velocity: this produces a reversible modulation of the global front width at twice the flow frequency and in quadrature with that in the Taylor-like regime.Fil: Roht, Yanina Lucrecia. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física. Grupo de Medios Porosos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Auradou, H.. Université Paris Sud; FranciaFil: Hulin, J. P.. Université Paris Sud; FranciaFil: Salin, D.. Université Paris Sud; FranciaFil: Chertcoff, Ricardo Héctor. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física. Grupo de Medios Porosos; ArgentinaFil: Ippolito, Irene Paula. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física. Grupo de Medios Porosos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaAmerican Institute of Physics2015-10info: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/11336/41738Roht, Yanina Lucrecia; Auradou, H.; Hulin, J. P.; Salin, D.; Chertcoff, Ricardo Héctor; et al.; Time dependence and local structure of tracer dispersion in oscillating liquid Hele-Shaw flows; American Institute of Physics; Physics of Fluids; 27; 10; 10-2015; 1-17; 1036021070-6631CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1063/1.4932302info:eu-repo/semantics/altIdentifier/url/https://aip.scitation.org/doi/10.1063/1.4932302info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:44:08Zoai:ri.conicet.gov.ar:11336/41738instacron: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 10:44:08.733CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Time dependence and local structure of tracer dispersion in oscillating liquid Hele-Shaw flows |
title |
Time dependence and local structure of tracer dispersion in oscillating liquid Hele-Shaw flows |
spellingShingle |
Time dependence and local structure of tracer dispersion in oscillating liquid Hele-Shaw flows Roht, Yanina Lucrecia DISPERSION OSCILLATION FRACTURE |
title_short |
Time dependence and local structure of tracer dispersion in oscillating liquid Hele-Shaw flows |
title_full |
Time dependence and local structure of tracer dispersion in oscillating liquid Hele-Shaw flows |
title_fullStr |
Time dependence and local structure of tracer dispersion in oscillating liquid Hele-Shaw flows |
title_full_unstemmed |
Time dependence and local structure of tracer dispersion in oscillating liquid Hele-Shaw flows |
title_sort |
Time dependence and local structure of tracer dispersion in oscillating liquid Hele-Shaw flows |
dc.creator.none.fl_str_mv |
Roht, Yanina Lucrecia Auradou, H. Hulin, J. P. Salin, D. Chertcoff, Ricardo Héctor Ippolito, Irene Paula |
author |
Roht, Yanina Lucrecia |
author_facet |
Roht, Yanina Lucrecia Auradou, H. Hulin, J. P. Salin, D. Chertcoff, Ricardo Héctor Ippolito, Irene Paula |
author_role |
author |
author2 |
Auradou, H. Hulin, J. P. Salin, D. Chertcoff, Ricardo Héctor Ippolito, Irene Paula |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
DISPERSION OSCILLATION FRACTURE |
topic |
DISPERSION OSCILLATION FRACTURE |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/2.7 https://purl.org/becyt/ford/2 |
dc.description.none.fl_txt_mv |
Passive tracer dispersion in oscillating Poiseuille liquid flows of zero net velocity is studied experimentally in a Hele-Shaw cell and numerically by 2D simulations: this study is particularly focused on the time dependence and local properties of the dispersion. The dispersion mechanism is found to be controlled by the ratio τm/T of the molecular diffusion time across the gap and the oscillation period (when molecular diffusion parallel to the flow is negligible). The 2D numerical simulations complement the experiments by providing the local concentration c(x,z,t) at a given distance z from the cell walls (instead of only the average over z). Above a time lapse scaling like τm, the variation of c with the distance x along the flow becomes a Gaussian of width constant with z while the mean distance ¯x may depend both on z and t. For τm/T . 2, the front spreads through Taylor-like dispersion and the normalized dispersivity scales as τm/T. The front oscillates parallel to the flow with an amplitude constant across the gap; its width increases monotonically at a rate modulated at twice the flow frequency, due to variations of the instantaneous dispersivity. For τm/T & 20, the molecular diffusion distance during a period of the flow is smaller than the gap and the normalized dispersivity scales as (τm/T)−1 . The oscillations of the different points of the front follow the local fluid velocity: this produces a reversible modulation of the global front width at twice the flow frequency and in quadrature with that in the Taylor-like regime. Fil: Roht, Yanina Lucrecia. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física. Grupo de Medios Porosos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Auradou, H.. Université Paris Sud; Francia Fil: Hulin, J. P.. Université Paris Sud; Francia Fil: Salin, D.. Université Paris Sud; Francia Fil: Chertcoff, Ricardo Héctor. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física. Grupo de Medios Porosos; Argentina Fil: Ippolito, Irene Paula. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física. Grupo de Medios Porosos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina |
description |
Passive tracer dispersion in oscillating Poiseuille liquid flows of zero net velocity is studied experimentally in a Hele-Shaw cell and numerically by 2D simulations: this study is particularly focused on the time dependence and local properties of the dispersion. The dispersion mechanism is found to be controlled by the ratio τm/T of the molecular diffusion time across the gap and the oscillation period (when molecular diffusion parallel to the flow is negligible). The 2D numerical simulations complement the experiments by providing the local concentration c(x,z,t) at a given distance z from the cell walls (instead of only the average over z). Above a time lapse scaling like τm, the variation of c with the distance x along the flow becomes a Gaussian of width constant with z while the mean distance ¯x may depend both on z and t. For τm/T . 2, the front spreads through Taylor-like dispersion and the normalized dispersivity scales as τm/T. The front oscillates parallel to the flow with an amplitude constant across the gap; its width increases monotonically at a rate modulated at twice the flow frequency, due to variations of the instantaneous dispersivity. For τm/T & 20, the molecular diffusion distance during a period of the flow is smaller than the gap and the normalized dispersivity scales as (τm/T)−1 . The oscillations of the different points of the front follow the local fluid velocity: this produces a reversible modulation of the global front width at twice the flow frequency and in quadrature with that in the Taylor-like regime. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-10 |
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/11336/41738 Roht, Yanina Lucrecia; Auradou, H.; Hulin, J. P.; Salin, D.; Chertcoff, Ricardo Héctor; et al.; Time dependence and local structure of tracer dispersion in oscillating liquid Hele-Shaw flows; American Institute of Physics; Physics of Fluids; 27; 10; 10-2015; 1-17; 103602 1070-6631 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/41738 |
identifier_str_mv |
Roht, Yanina Lucrecia; Auradou, H.; Hulin, J. P.; Salin, D.; Chertcoff, Ricardo Héctor; et al.; Time dependence and local structure of tracer dispersion in oscillating liquid Hele-Shaw flows; American Institute of Physics; Physics of Fluids; 27; 10; 10-2015; 1-17; 103602 1070-6631 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1063/1.4932302 info:eu-repo/semantics/altIdentifier/url/https://aip.scitation.org/doi/10.1063/1.4932302 |
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 Institute of Physics |
publisher.none.fl_str_mv |
American Institute of Physics |
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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1844614477958348800 |
score |
13.070432 |