TY - GEN
T1 - Influence of periodically varying incident velocity on the application of semi-empirical dynamic stall models
AU - Schicker, Dominik
AU - Hajek, Manfred
N1 - Publisher Copyright:
© Springer International Publishing Switzerland 2016.
PY - 2016
Y1 - 2016
N2 - The dynamic stall behavior of an OA209 rotorcraft airfoil is examined under the influence of a varying incident velocity. Therefore, a harmonic flowvelocity variation is added to the pitch motion of the airfoil in antiphase. Results from twodimensional unsteadyRANScomputations are presented for steady and periodic flow velocity. The unsteady flow velocity in the computational domain is generated by a fore-aft motion of the airfoil. Both methods are approximations of the flowconditions a blade section of a helicopter rotor experiences during fast forward flight. Finally, the numerical predicted aerodynamic coefficients are used to investigate the modeling capabilities of semi-empirical formulations for a simultaneous angle of attack and incident velocity change.
AB - The dynamic stall behavior of an OA209 rotorcraft airfoil is examined under the influence of a varying incident velocity. Therefore, a harmonic flowvelocity variation is added to the pitch motion of the airfoil in antiphase. Results from twodimensional unsteadyRANScomputations are presented for steady and periodic flow velocity. The unsteady flow velocity in the computational domain is generated by a fore-aft motion of the airfoil. Both methods are approximations of the flowconditions a blade section of a helicopter rotor experiences during fast forward flight. Finally, the numerical predicted aerodynamic coefficients are used to investigate the modeling capabilities of semi-empirical formulations for a simultaneous angle of attack and incident velocity change.
UR - http://www.scopus.com/inward/record.url?scp=84975742301&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-27279-5_31
DO - 10.1007/978-3-319-27279-5_31
M3 - Conference contribution
AN - SCOPUS:84975742301
SN - 9783319272788
T3 - Notes on Numerical Fluid Mechanics and Multidisciplinary Design
SP - 349
EP - 357
BT - New Results in Numerical and Experimental Fluid Mechanics X - Contributions to the 19th STAB/DGLR, 2014
A2 - Dillmann, Andreas
A2 - Krämer, Ewald
A2 - Heller, Gerd
A2 - Breitsamter, Christian
A2 - Wagner, Claus
PB - Springer Verlag
T2 - 19th Symposium on New Results in Numerical and Experimental Fluid Mechanics, DGLR/STAB
Y2 - 4 November 2014 through 5 November 2014
ER -