DC FieldValueLanguage
dc.contributor.authorWood, Jens Nikolas-
dc.contributor.authorBreuer, Michael-
dc.contributor.authorDe Nayer, Guillaume-
dc.date.accessioned2020-06-29T06:20:19Z-
dc.date.available2020-06-29T06:20:19Z-
dc.date.issued2020-
dc.identifier.citationEnthalten in: Journal of fluids and structures. - Orlando, Fla. : Elsevier, 1993. - Online-Ressource. - Bd. 96.2020de_DE
dc.identifier.issn08899746-
dc.description.abstract© 2020 The Authors The present paper investigates the fluid–structure interaction (FSI) of a wing with two degrees of freedom (DOF), i.e., pitch and heave, in the transitional Reynolds number regime. This 2-DOF setup marks a classic configuration in aeroelasticity to demonstrate flutter stability of wings. In the past, mainly analytic approaches have been developed to investigate this challenging problem under simplifying assumptions such as potential flow. Although the classical theory offers satisfying results for certain cases, modern numerical simulations based on fully coupled approaches, which are more generally applicable and powerful, are still rarely found. Thus, the aim of this paper is to provide appropriate experimental reference data for well-defined configurations under clear operating conditions. In a follow-up contribution these will be used to demonstrate the capability of modern simulation techniques to capture instantaneous physical phenomena such as flutter. The measurements in a wind tunnel are carried out based on digital-image correlation (DIC). The investigated setup consists of a straight wing using a symmetric NACA 0012 airfoil. For the experiments the model is mounted into a frame by means of bending and torsional springs imitating the elastic behavior of the wing. Three different configurations of the wing possessing a fixed elastic axis are considered. For this purpose, the center of gravity is shifted along the chord line of the airfoil influencing the flutter stability of the setup. Still air free-oscillation tests are used to determine characteristic properties of the unloaded system (e.g. mass moment of inertia and damping ratios) for one (pitch or heave) and two degrees (pitch and heave) of freedom. The investigations on the coupled 2-DOF system in the wind tunnel are performed in an overall chord Reynolds number range of 9.66×103≤Re≤8.77×104. The effect of the fluid-load induced damping is studied for the three configurations. Furthermore, the cases of limit-cycle oscillation (LCO) as well as diverging flutter motion of the wing are characterized in detail. In addition to the DIC measurements, hot-film measurements of the wake flow for the rigid and the oscillating airfoil are presented in order to distinguish effects originating from the flow and the structure.de_DE
dc.description.sponsorshipStrömungsmechanikde_DE
dc.language.isoende_DE
dc.publisherElsevierde_DE
dc.relation.ispartofJournal of Fluids and Structuresde_DE
dc.subjectUniversitätsbibliographiede_DE
dc.subjectEvaluation 2020de_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.titleExperimental investigations on the dynamic behavior of a 2-DOF airfoil in the transitional Re number regime based on digital-image correlation measurementsde_DE
dc.typeArticlede_DE
dc.identifier.doi10.1016/j.jfluidstructs.2020.103052-
dc.identifier.scopus2-s2.0-85085390156-
hsu.accessrights.dnbfree-
dcterms.bibliographicCitation.volume96de_DE
dcterms.bibliographicCitation.issue7de_DE
dcterms.bibliographicCitation.originalpublisherplaceAmsterdamde_DE
dcterms.bibliographicCitation.articlenumber103052de_DE
dc.relation.pages32 Seitende_DE
dc.identifier.urlhttps://api.elsevier.com/content/abstract/scopus_id/85085390156-
dc.identifier.urlhttps://ub.hsu-hh.de/DB=1.8/XMLPRS=N/PPN?PPN=1700344625-
local.submission.typeonly-metadatade_DE
dc.description.peerReviewedYesde_DE
dc.type.articleScientific Articlede_DE
item.grantfulltextnone-
item.fulltext_sNo Fulltext-
item.languageiso639-1en-
item.fulltextNo Fulltext-
item.openairetypeArticle-
crisitem.author.deptStrömungsmechanik-
crisitem.author.deptStrömungsmechanik-
crisitem.author.deptStrömungsmechanik-
crisitem.author.orcid0000-0003-4467-478X-
crisitem.author.orcid0000-0003-1208-4451-
crisitem.author.parentorgFakultät für Maschinenbau und Bauingenieurwesen-
crisitem.author.parentorgFakultät für Maschinenbau und Bauingenieurwesen-
crisitem.author.parentorgFakultät für Maschinenbau und Bauingenieurwesen-
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