DC FieldValueLanguage
dc.contributor.authorJoviĉić, Nikola-
dc.contributor.authorBreuer, Michael-
dc.contributor.authorJovanović, J.-
dc.date.accessioned2020-06-16T08:02:04Z-
dc.date.available2020-06-16T08:02:04Z-
dc.date.issued2006-05-
dc.identifier.issn00982202-
dc.description.abstractTurbulence investigations of the flow past an unswept wing at a high angle of attack are reported. Detailed predictions were carried out using large-eddy simulations (LES) with very fine grids in the vicinity of the wall in order to resolve the near-wall structures. Since only a well-resolved LES ensures reliable results and hence allows a detailed analysis of turbulence, the Reynolds number investigated was restricted to Rec= 105 based on the chord length c. Admittedly, under real flight conditions Re c is considerably higher (about (35-40)' 106). However, in combination with the inclination angle of attack α=18 deg this Re c value guarantees a practically relevant flow behavior, i.e., the flow exhibits a trailing-edge separation including some interesting flow phenomena such as a thin separation bubble, transition, separation of the turbulent boundary layer, and large-scale vortical structures in the wake. Due to the fine grid resolution applied, the aforementioned flow features are predicted in detail. Thus, reliable results are obtained which form the basis for advanced turbulence analysis. In order to provide a deeper insight into the nature of turbulence, the flow was analyzed using the invariant theory of turbulence by Lumley and Newman (J. Fluid Mech., 82, 161-178, 1977). Therefore, the anisotropy of various portions of the flow was extracted and displayed in the invariant map. This allowed us to examine the state of turbulence in distinct regions and provided an improved illustration of what happens in the turbulent flow. Thus, turbulence itself and the way in which it develops were extensively investigated, leading to an improved understanding of the physical mechanisms involved, not restricted to a standard test case such as channel flow but for a realistic, practically relevant flow problem at a moderate Reynolds number. Copyright © 2006 by ASME.de_DE
dc.description.sponsorshipUniversität Erlangen-Nürnbergde_DE
dc.language.isoen_USde_DE
dc.publisherASMEde_DE
dc.relation.ispartofJournal of Fluids Engineering, Transactions of the ASMEde_DE
dc.subject.ddcDDC - Dewey Decimal Classification::000 Informatik, Wissen, Systemede_DE
dc.subject.ddcDDC - Dewey Decimal Classification::500 Naturwissenschaftende_DE
dc.subject.ddcDDC - Dewey Decimal Classification::600 Technikde_DE
dc.titleAnisotropy-invariant mapping of turbulence in a flow past an unswept airfoil at high angle of attackde_DE
dc.typeArticlede_DE
dc.identifier.doi10.1115/1.2175162-
dc.identifier.scopus2-s2.0-33745131774-
hsu.accessrights.dnbfreede_DE
dcterms.bibliographicCitation.volume128de_DE
dcterms.bibliographicCitation.issue3de_DE
dcterms.bibliographicCitation.pagestart559de_DE
dcterms.bibliographicCitation.pageend567de_DE
dcterms.bibliographicCitation.originalpublisherplaceNew Yorkde_DE
dc.identifier.urlhttps://api.elsevier.com/content/abstract/scopus_id/33745131774-
local.submission.typeonly-metadatade_DE
item.grantfulltextnone-
item.fulltext_sNo Fulltext-
item.languageiso639-1en_US-
item.fulltextNo Fulltext-
item.openairetypeArticle-
crisitem.author.deptStrömungsmechanik-
crisitem.author.orcid0000-0003-4467-478X-
crisitem.author.parentorgFakultät für Maschinenbau und Bauingenieurwesen-
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