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dc.contributor.author
 hal.structure.identifier
VELKOVA, Cvetelina
134975 Laboratoire de Dynamique des Fluides [DynFluid]
dc.contributor.author
 hal.structure.identifier
DOBREV, Ivan
134975 Laboratoire de Dynamique des Fluides [DynFluid]
dc.contributor.author
 hal.structure.identifier
TODOROV, Michael
134975 Laboratoire de Dynamique des Fluides [DynFluid]
dc.contributor.author
 hal.structure.identifier
MASSOUH, Fawaz
134975 Laboratoire de Dynamique des Fluides [DynFluid]
dc.date.accessioned2017
dc.date.available2017
dc.date.issued2012
dc.date.submitted2017
dc.identifier.urihttp://hdl.handle.net/10985/11888
dc.descriptionhttp://e-university.tu-sofia.bg/e-publ/files/882_BulTrans_12_Velkova.pdf
dc.description.abstractThe aim of the computational study is to present different approach for numerical modeling of airfoil dynamic stall as the airfoil is pitched at a constant rate from zero incidences to a high angle of attack. An application of the Detached-Eddy Simulation model on a NACA 0012 airfoil is presented. The DES model is a method for predicting turbulence in CFD computations, which combines a Reynolds Averaged Navier-Stokes (RANS) method in the boundary layer with a Large Eddy Simulation (LES) in the free shear flow. (DES) turbulence model gives a good accuracy of the flow field because its solves an additional equation for turbulent Reynolds number in a shear stress transport version (SST), which solves a first equation for the turbulent energy K and a second equation for the specific turbulent dissipation rate w. The approach using DES turbulence model is effective because it gives better visualization of flow field, the unsteady separation flow and vortex shedding. Consequently the suggested approach is suitable and it can be used in prediction of dynamic stall phenomenon in the stage of helicopter rotors, wind turbine rotors and aircraft wings design purposes.
dc.language.isoen
dc.publisherBulTrans-2012
dc.rightsPost-print
dc.subjectdynamic stall, unsteady aerodynamics, helicopter rotor, numerical approach
dc.titleApproach for numerical modeling of airfoil dynamic stall
dc.typdocCommunication avec acte
dc.localisationCentre de Paris
dc.subject.halPhysique: Dynamique des Fluides
dc.subject.halSciences de l'ingénieur: Mécanique: Mécanique des fluides
ensam.audienceInternationale
ensam.conference.titleBulTrans-2012
ensam.conference.date2012-09-26
ensam.countryBulgarie
ensam.title.proceedingProceedings of BulTrans-2012, 26-28 September 2012, Sozopol
ensam.page1-6
ensam.citySozopol
ensam.peerReviewingOui
ensam.invitedCommunicationOui
ensam.proceedingOui
hal.identifierhal-01551817
hal.version1
hal.submission.permittedupdateFiles
hal.statusaccept


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