DC FieldValueLanguage
dc.contributor.authorBreuer, Michael-
dc.date.accessioned2019-10-10T08:34:39Z-
dc.date.available2019-10-10T08:34:39Z-
dc.date.issued2018-
dc.identifier.citationIn: Flow, turbulence and combustion. - Dordrecht [u.a.] : Springer Science + Business Media B.V., 1947. - Online-Ressource . - Bd. 101.2018, 2, Seite 433-456de_DE
dc.description.abstractThe present paper is concerned with numerical investigations on the effect of inflow turbulence on the flow around a SD7003 airfoil. At a Reynolds number Rec = 60,000, an angle of attack α = 4∘ and a low or zero turbulence intensity of the oncoming flow, the flow past the airfoil is known to be dominated by early separation, subsequent transition and reattachment leading to a laminar separation bubble with a distinctive pressure plateau. The objective of the study is to investigate the effect of inflow turbulence on the flow behavior. For this purpose, a numerical methodology relying on a wall-resolved large-eddy simulation, a synthetic turbulence inflow generator and a specific source term concept for introducing the turbulence fluctuations within the computational domain is used. The numerical technique applied allows the variation of the free-stream turbulence intensity (TI) in a wide range. In order to analyze the influence of TI on the arising instantaneous and time-averaged flow field past the airfoil, the present study evaluates the range 0% ≤ TI ≤ 11.2%, which covers typical values found in atmospheric boundary layers. In accordance with experimental studies it is shown that the laminar separation bubble first shrinks and finally completely vanishes for increasing inflow turbulence. Consequently, the aerodynamic performance in terms of the lift-to-drag ratio increases. Furthermore, the effect of the time and length scales of the isotropic inflow turbulence on the development of the flow field around the airfoil is analyzed and a perceptible influence is found. Within the range of inflow scales studied decreasing scales augment the receptivity of the boundary layer promoting an earlier transition. © 2018, Springer Science+Business Media B.V., part of Springer Nature.de_DE
dc.description.sponsorshipStrömungsmechanikde_DE
dc.language.isoende_DE
dc.publisherSpringerde_DE
dc.relation.ispartofFlow, turbulence and combustion : an international journal published in association with ERCOFTACde_DE
dc.rights4.0 deutschde_DE
dc.rights.uriCreative Commons Attribution 4.0 (CC BY)de_DE
dc.subject.ddcIngenieurwissenschaftende_DE
dc.subject.otherAerodynamic Dragde_DE
dc.subject.otherAtmospheric Boundary Layerde_DE
dc.subject.otherLarge-Eddy Simulationde_DE
dc.titleEffect of Inflow Turbulence on an Airfoil Flow with Laminar Separation Bubblede_DE
dc.typeArticlede_DE
dc.identifier.doi10.1007/s10494-017-9890-2-
hsu.accessrights.dnbfreede_DE
dc.contributor.affiliationStrömungsmechanikde_DE
dcterms.bibliographicCitation.volume101de_DE
dcterms.bibliographicCitation.issue2de_DE
dcterms.bibliographicCitation.pagestart433de_DE
dcterms.bibliographicCitation.pageend456de_DE
dc.identifier.urlhttps://ub.hsu-hh.de/DB=1.8/XMLPRS=N/PPN?PPN=1038672406-
dc.title.subtitleAn LES Studyde_DE
local.submission.typeonly-metadatade_DE
item.grantfulltextnone-
item.fulltext_sNo Fulltext-
item.languageiso639-1en-
item.fulltextNo Fulltext-
item.openairetypeArticle-
crisitem.author.deptStrömungsmechanik-
crisitem.author.orcid0000-0003-4467-478X-
crisitem.author.parentorgFakultät für Maschinenbau und Bauingenieurwesen-
Appears in Collections:Publications of the HSU Researchers
Show simple item record

CORE Recommender

SCOPUSTM   
Citations

27
checked on Jul 4, 2022

Google ScholarTM

Check

Altmetric

Altmetric


Items in openHSU are protected by copyright, with all rights reserved, unless otherwise indicated.