DC FieldValueLanguage
dc.contributor.authorLobo, Brandon Arthur-
dc.contributor.authorÖzçakmak, Özge Sinem-
dc.contributor.authorMadsen, Helge Aagaard-
dc.contributor.authorSchaffarczyk, Alois Peter-
dc.contributor.authorBreuer, Michael-
dc.contributor.authorSørensen, Niels N.-
dc.date.accessioned2023-03-07T09:00:13Z-
dc.date.available2023-03-07T09:00:13Z-
dc.date.issued2023-03-06-
dc.identifier.citationWind Energ. Sci., 8, 303–326, 2023de_DE
dc.description.abstractAmong a few field experiments on wind turbines for analyzing laminar–turbulent boundary layer transition, the results obtained from the DAN-AERO and aerodynamic glove projects provide significant findings. The effect of inflow turbulence on boundary layer transition and the possible transition mechanisms on wind turbine blades are discussed and compared to CFD (computational fluid dynamics) simulations of increasing fidelity (Reynolds-averaged Navier–Stokes, RANS; unsteady Reynolds-averaged Navier–Stokes, URANS; and large-eddy simulations, LESs). From the experiments, it is found that the transition scenario changes even over a single revolution with bypass transition taking place under the influence of enhanced upstream turbulence, for example, such as that from wakes, while natural transition is observed in other instances under relatively low inflow turbulence conditions. This change from bypass to natural transition takes place at azimuthal angles directly outside the influence of the wake indicating a quick boundary layer recovery. The importance of a suitable choice of the amplification factor to be used within the eN method of transition detection is evident from both the RANS and URANS simulations. The URANS simulations which simultaneously check for natural and bypass transition match very well with the experiment. The LES predictions with anisotropic inflow turbulence show the shear-sheltering effect and a good agreement between the power spectral density plots from the experiment and simulation is found in case of bypass transition. A condition to easily distinguish the region of transition to turbulence based on the Reynolds shear stress is also observed. Overall, useful insights into the flow phenomena are obtained and a remarkably consistent set of conclusions can be drawn.de_DE
dc.description.sponsorshipStrömungsmechanikde_DE
dc.language.isoengde_DE
dc.publisherCopernicusde_DE
dc.relation.ispartofWind Energy Sciencede_DE
dc.subjectLaminar–turbulent transition on wind turbine bladesde_DE
dc.titleOn the laminar–turbulent transition mechanism on megawatt wind turbine blades operating in atmospheric flowde_DE
dc.typeArticlede_DE
dc.identifier.doi10.5194/wes-8-303-2023-
dcterms.bibliographicCitation.volume8de_DE
dcterms.bibliographicCitation.issue3de_DE
dcterms.bibliographicCitation.pagestart303de_DE
dcterms.bibliographicCitation.pageend326de_DE
local.submission.typeonly-metadatade_DE
dc.type.articleScientific Articlede_DE
hsu.peerReviewed-
item.openairetypeArticle-
item.fulltextNo Fulltext-
item.grantfulltextnone-
item.fulltext_sNo Fulltext-
item.languageiso639-1en-
crisitem.author.deptStrömungsmechanik-
crisitem.author.orcid0000-0003-4467-478X-
crisitem.author.parentorgFakultät für Maschinenbau und Bauingenieurwesen-
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