On the evolution of flow topology in turbulent Rayleigh-Bénard convection

Copyright 2016 AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.

Bibliographic Details
Authors: Dabbagh, Firas|||0000-0001-8440-507X, Trias Miquel, Francesc Xavier|||0000-0002-5966-0703, Gorobets, Andrei, Oliva Llena, Asensio|||0000-0002-2805-4794
Format: article
Publication Date:2016
Country:España
Institution:Universitat Politècnica de Catalunya (UPC)
Repository:UPCommons. Portal del coneixement obert de la UPC
Language:English
OAI Identifier:oai:upcommons.upc.edu:2117/103099
Online Access:https://hdl.handle.net/2117/103099
https://dx.doi.org/10.1063/1.4967495
Access Level:Open access
Keyword:Rayleigh-Bénard convection
Topology
Tensor methods
Eddies
Viscosity
Buoyancy driven flows
Rayleigh-Bénard, Convecció de
Topologia
Àrees temàtiques de la UPC::Física::Física de fluids
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oai_identifier_str oai:upcommons.upc.edu:2117/103099
network_acronym_str ES
network_name_str España
repository_id_str
spelling On the evolution of flow topology in turbulent Rayleigh-Bénard convectionDabbagh, Firas|||0000-0001-8440-507XTrias Miquel, Francesc Xavier|||0000-0002-5966-0703Gorobets, AndreiOliva Llena, Asensio|||0000-0002-2805-4794Rayleigh-Bénard convectionTopologyTensor methodsTopologyEddiesViscosityBuoyancy driven flowsRayleigh-Bénard, Convecció deTopologiaÀrees temàtiques de la UPC::Física::Física de fluidsCopyright 2016 AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.Small-scale dynamics is the spirit of turbulence physics. It implicates many attributes of flow topology evolution, coherent structures, hairpin vorticity dynamics, and mechanism of the kinetic energy cascade. In this work, several dynamical aspects of the small-scale motions have been numerically studied in a framework of Rayleigh-Benard convection (RBC). To do so, direct numerical simulations have been carried out at two Rayleigh numbers Ra = 10(8) and 10(10), inside an air-filled rectangular cell of aspect ratio unity and pi span-wise open-ended distance. As a main feature, the average rate of the invariants of the velocity gradient tensor (Q(G), R-G) has displayed the so-calledPeer Reviewed20162016-11-2220172017-03-30journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/103099https://dx.doi.org/10.1063/1.4967495reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/1030992026-05-27T15:37:01Z
dc.title.none.fl_str_mv On the evolution of flow topology in turbulent Rayleigh-Bénard convection
title On the evolution of flow topology in turbulent Rayleigh-Bénard convection
spellingShingle On the evolution of flow topology in turbulent Rayleigh-Bénard convection
Dabbagh, Firas|||0000-0001-8440-507X
Rayleigh-Bénard convection
Topology
Tensor methods
Topology
Eddies
Viscosity
Buoyancy driven flows
Rayleigh-Bénard, Convecció de
Topologia
Àrees temàtiques de la UPC::Física::Física de fluids
title_short On the evolution of flow topology in turbulent Rayleigh-Bénard convection
title_full On the evolution of flow topology in turbulent Rayleigh-Bénard convection
title_fullStr On the evolution of flow topology in turbulent Rayleigh-Bénard convection
title_full_unstemmed On the evolution of flow topology in turbulent Rayleigh-Bénard convection
title_sort On the evolution of flow topology in turbulent Rayleigh-Bénard convection
dc.creator.none.fl_str_mv Dabbagh, Firas|||0000-0001-8440-507X
Trias Miquel, Francesc Xavier|||0000-0002-5966-0703
Gorobets, Andrei
Oliva Llena, Asensio|||0000-0002-2805-4794
author Dabbagh, Firas|||0000-0001-8440-507X
author_facet Dabbagh, Firas|||0000-0001-8440-507X
Trias Miquel, Francesc Xavier|||0000-0002-5966-0703
Gorobets, Andrei
Oliva Llena, Asensio|||0000-0002-2805-4794
author_role author
author2 Trias Miquel, Francesc Xavier|||0000-0002-5966-0703
Gorobets, Andrei
Oliva Llena, Asensio|||0000-0002-2805-4794
author2_role author
author
author
dc.subject.none.fl_str_mv Rayleigh-Bénard convection
Topology
Tensor methods
Topology
Eddies
Viscosity
Buoyancy driven flows
Rayleigh-Bénard, Convecció de
Topologia
Àrees temàtiques de la UPC::Física::Física de fluids
topic Rayleigh-Bénard convection
Topology
Tensor methods
Topology
Eddies
Viscosity
Buoyancy driven flows
Rayleigh-Bénard, Convecció de
Topologia
Àrees temàtiques de la UPC::Física::Física de fluids
description Copyright 2016 AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.
publishDate 2016
dc.date.none.fl_str_mv 2016
2016-11-22
2017
2017-03-30
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/103099
https://dx.doi.org/10.1063/1.4967495
url https://hdl.handle.net/2117/103099
https://dx.doi.org/10.1063/1.4967495
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869408916369047552
score 15,300719

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