Approach for numerical modeling of airfoil dynamic stall
dc.contributor.author
hal.structure.identifier | VELKOVA, Cvetelina
|
dc.contributor.author
hal.structure.identifier | DOBREV, Ivan
|
dc.contributor.author
hal.structure.identifier | TODOROV, Michael
|
dc.contributor.author
hal.structure.identifier | MASSOUH, Fawaz
|
dc.date.accessioned | 2017 |
dc.date.available | 2017 |
dc.date.issued | 2012 |
dc.date.submitted | 2017 |
dc.identifier.uri | http://hdl.handle.net/10985/11888 |
dc.description | http://e-university.tu-sofia.bg/e-publ/files/882_BulTrans_12_Velkova.pdf |
dc.description.abstract | The 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.iso | en |
dc.publisher | BulTrans-2012 |
dc.rights | Post-print |
dc.subject | dynamic stall, unsteady aerodynamics, helicopter rotor, numerical approach |
dc.title | Approach for numerical modeling of airfoil dynamic stall |
dc.typdoc | Communication avec acte |
dc.localisation | Centre de Paris |
dc.subject.hal | Physique: Dynamique des Fluides |
dc.subject.hal | Sciences de l'ingénieur: Mécanique: Mécanique des fluides |
ensam.audience | Internationale |
ensam.conference.title | BulTrans-2012 |
ensam.conference.date | 2012-09-26 |
ensam.country | Bulgarie |
ensam.title.proceeding | Proceedings of BulTrans-2012, 26-28 September 2012, Sozopol |
ensam.page | 1-6 |
ensam.city | Sozopol |
ensam.peerReviewing | Oui |
ensam.invitedCommunication | Oui |
ensam.proceeding | Oui |
hal.identifier | hal-01551817 |
hal.version | 1 |
hal.submission.permitted | updateFiles |
hal.status | accept |