DC FieldValueLanguage
dc.contributor.authorKränzien, Patrick Udo-
dc.contributor.authorJin, Yan-
dc.date.accessioned2019-06-12T07:44:59Z-
dc.date.available2019-06-12T07:44:59Z-
dc.date.issued2019-04-03-
dc.identifier.citationHeat Transfer Engineering 5-6 (40): 487-496 (2019-04-03)de_DE
dc.identifier.issn0145-7632de_DE
dc.identifier.urihttp://hdl.handle.net/11420/2756-
dc.description.abstractNatural convection in a two-dimensional cell filled with a porous medium was investigated using two direct numerical simulation (DNS) methods. The cell was heated at the lower wall and cooled at the upper wall. The buoyancy force was modeled by the Boussinesq approximation. The Rayleigh numbers ranged from 50 to 20, 000. The DNS results from both DNS methods indicate the linear relationship between Nu and Ra. However, the numerical methods have some effects on the small flow structures. The fish bone structures are clearly identified by the space-time plots of the temperature in a slice close to the boundary layer. Four motion patterns showing mega-plumes and proto-plumes can be observed in the fish bone structures. The characteristic length, velocity, and temperature scales in the boundary layer were studied based on the DNS results.en
dc.language.isoende_DE
dc.relation.ispartofHeat transfer engineeringde_DE
dc.titleNatural Convection in a Two-Dimensional Cell Filled with a Porous Medium: A Direct Numerical Simulation Studyde_DE
dc.typeArticlede_DE
dc.identifier.urnurn:nbn:de:gbv:830-882.035910-
dc.type.diniarticle-
dcterms.DCMITypeText-
tuhh.identifier.urnurn:nbn:de:gbv:830-882.035910-
tuhh.abstract.englishNatural convection in a two-dimensional cell filled with a porous medium was investigated using two direct numerical simulation (DNS) methods. The cell was heated at the lower wall and cooled at the upper wall. The buoyancy force was modeled by the Boussinesq approximation. The Rayleigh numbers ranged from 50 to 20, 000. The DNS results from both DNS methods indicate the linear relationship between Nu and Ra. However, the numerical methods have some effects on the small flow structures. The fish bone structures are clearly identified by the space-time plots of the temperature in a slice close to the boundary layer. Four motion patterns showing mega-plumes and proto-plumes can be observed in the fish bone structures. The characteristic length, velocity, and temperature scales in the boundary layer were studied based on the DNS results.de_DE
tuhh.publisher.doi10.1080/01457632.2018.1432083-
tuhh.publication.instituteTechnische Thermodynamik M-21de_DE
tuhh.type.opus(wissenschaftlicher) Artikel-
tuhh.institute.germanTechnische Thermodynamik M-21de
tuhh.institute.englishTechnische Thermodynamik M-21de_DE
tuhh.gvk.hasppnfalse-
dc.type.driverarticle-
dc.type.casraiJournal Article-
tuhh.container.issue5-6de_DE
tuhh.container.volume40de_DE
tuhh.container.startpage487de_DE
tuhh.container.endpage496de_DE
item.grantfulltextnone-
item.creatorGNDKränzien, Patrick Udo-
item.creatorGNDJin, Yan-
item.languageiso639-1other-
item.fulltextNo Fulltext-
item.creatorOrcidKränzien, Patrick Udo-
item.creatorOrcidJin, Yan-
crisitem.author.deptTechnische Thermodynamik M-21-
crisitem.author.deptTechnische Thermodynamik M-21-
crisitem.author.orcid0000-0002-2297-6827-
crisitem.author.parentorgStudiendekanat Maschinenbau-
crisitem.author.parentorgStudiendekanat Maschinenbau-
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