Impact of fluid deformation on mixing-induced chemical reactions in heterogeneous flows

Fast chemical reactions in geophysical flows are controlled by fluid mixing, which perturbs local chemical equilibria and thus triggers chemical reactions. Spatial fluctuations in the flow velocity lead to deformation of material fluid elements, which form the support volumes of transported chemical...

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Detalles Bibliográficos
Autores: Borgne, Tanguy Le, Ginn, Timothy R., Dentz, Marco
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2014
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/140811
Acceso en línea:http://hdl.handle.net/10261/140811
Access Level:acceso abierto
Palabra clave:Flow topology
Fluid deformation
Lamella
Mixing
Porous media
Reactive transport
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spelling Impact of fluid deformation on mixing-induced chemical reactions in heterogeneous flowsBorgne, Tanguy LeGinn, Timothy R.Dentz, MarcoFlow topologyFluid deformationLamellaMixingPorous mediaReactive transportFast chemical reactions in geophysical flows are controlled by fluid mixing, which perturbs local chemical equilibria and thus triggers chemical reactions. Spatial fluctuations in the flow velocity lead to deformation of material fluid elements, which form the support volumes of transported chemical species. We develop an approach based on a lamellar representation of fluid mixing that provides a direct link between fluid deformation, the distribution of concentration gradients, and the upscaled reaction rates for fast reversible reactions. The temporal evolution of effective reaction rates is determined by the flow topology and the distribution of local velocity gradients. This leads to a significant increase of the reaction efficiency, which turns out to be orders of magnitude larger than in homogeneous flow. This approach allows for the systematic evaluation of the temporal evolution of equilibrium reaction rates and establishes a direct link between the reaction efficiency and the spatial characteristics of the underlying flow field as quantified by the deformation of material fluid elements. © 2014. American Geophysical Union. All Rights Reserved.Data used for producing the figures can be obtained by solving the respective equations given in the manuscript. MD acknowledges the support of the European Research Council (ERC) through the project MHetScale (617511).Peer reviewedAmerican Geophysical UnionEuropean Research CouncilConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201620162014info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/140811reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/EC/FP7/61751110.1002/2014GL062038Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1408112026-05-22T06:33:51Z
dc.title.none.fl_str_mv Impact of fluid deformation on mixing-induced chemical reactions in heterogeneous flows
title Impact of fluid deformation on mixing-induced chemical reactions in heterogeneous flows
spellingShingle Impact of fluid deformation on mixing-induced chemical reactions in heterogeneous flows
Borgne, Tanguy Le
Flow topology
Fluid deformation
Lamella
Mixing
Porous media
Reactive transport
title_short Impact of fluid deformation on mixing-induced chemical reactions in heterogeneous flows
title_full Impact of fluid deformation on mixing-induced chemical reactions in heterogeneous flows
title_fullStr Impact of fluid deformation on mixing-induced chemical reactions in heterogeneous flows
title_full_unstemmed Impact of fluid deformation on mixing-induced chemical reactions in heterogeneous flows
title_sort Impact of fluid deformation on mixing-induced chemical reactions in heterogeneous flows
dc.creator.none.fl_str_mv Borgne, Tanguy Le
Ginn, Timothy R.
Dentz, Marco
author Borgne, Tanguy Le
author_facet Borgne, Tanguy Le
Ginn, Timothy R.
Dentz, Marco
author_role author
author2 Ginn, Timothy R.
Dentz, Marco
author2_role author
author
dc.contributor.none.fl_str_mv European Research Council
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Flow topology
Fluid deformation
Lamella
Mixing
Porous media
Reactive transport
topic Flow topology
Fluid deformation
Lamella
Mixing
Porous media
Reactive transport
description Fast chemical reactions in geophysical flows are controlled by fluid mixing, which perturbs local chemical equilibria and thus triggers chemical reactions. Spatial fluctuations in the flow velocity lead to deformation of material fluid elements, which form the support volumes of transported chemical species. We develop an approach based on a lamellar representation of fluid mixing that provides a direct link between fluid deformation, the distribution of concentration gradients, and the upscaled reaction rates for fast reversible reactions. The temporal evolution of effective reaction rates is determined by the flow topology and the distribution of local velocity gradients. This leads to a significant increase of the reaction efficiency, which turns out to be orders of magnitude larger than in homogeneous flow. This approach allows for the systematic evaluation of the temporal evolution of equilibrium reaction rates and establishes a direct link between the reaction efficiency and the spatial characteristics of the underlying flow field as quantified by the deformation of material fluid elements. © 2014. American Geophysical Union. All Rights Reserved.
publishDate 2014
dc.date.none.fl_str_mv 2014
2016
2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/140811
url http://hdl.handle.net/10261/140811
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/EC/FP7/617511
10.1002/2014GL062038
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Geophysical Union
publisher.none.fl_str_mv American Geophysical Union
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869412498677956608
score 15.811543

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