TY - GEN
T1 - Dynamic actuation for delta wing post stall flow control
AU - Kölzsch, Anja
AU - Blanchard, Sophie
AU - Breitsamter, Christian
N1 - Publisher Copyright:
© Springer International Publishing Switzerland 2016.
PY - 2016
Y1 - 2016
N2 - The manipulation of delta wing flow by active and passive flow control methods is of great interest for increasing the performance (e.g. lift enhancement) of such configurations. This work presents experimental results in the post-stall regime at very high angles of attack (α = 35–45°) on a 65° sweptback generic half delta wing configuration (VFE-2 geometry)with sharp leading edge using slot actuators for pulsed blowing along the leading edge. The study comprises results of force, velocity and pressure measurements and substantiates the receptivity of the shear layer for the pulsed excitation. For α = 35°, an actuation at F+ ≈ 2.7 effects a retardation of vortex breakdown. For α = 45°, the optimum pulse frequency was found at F+ = 1.0–1.5, which leads to the re-establishment of a burst vortex and a significant increase in lift, thus satisfying the aim of enhancing aerodynamic performance.
AB - The manipulation of delta wing flow by active and passive flow control methods is of great interest for increasing the performance (e.g. lift enhancement) of such configurations. This work presents experimental results in the post-stall regime at very high angles of attack (α = 35–45°) on a 65° sweptback generic half delta wing configuration (VFE-2 geometry)with sharp leading edge using slot actuators for pulsed blowing along the leading edge. The study comprises results of force, velocity and pressure measurements and substantiates the receptivity of the shear layer for the pulsed excitation. For α = 35°, an actuation at F+ ≈ 2.7 effects a retardation of vortex breakdown. For α = 45°, the optimum pulse frequency was found at F+ = 1.0–1.5, which leads to the re-establishment of a burst vortex and a significant increase in lift, thus satisfying the aim of enhancing aerodynamic performance.
UR - http://www.scopus.com/inward/record.url?scp=84975717970&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-27279-5_72
DO - 10.1007/978-3-319-27279-5_72
M3 - Conference contribution
AN - SCOPUS:84975717970
SN - 9783319272788
T3 - Notes on Numerical Fluid Mechanics and Multidisciplinary Design
SP - 823
EP - 832
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 -