TY - GEN
T1 - Effects of burst frequency and momentum coefficient of DBD actuator on control of deep-stall flow around NACA0015 at Rec=2.6×105
AU - Aono, Hikaru
AU - Okada, Koichi
AU - Nonomura, Taku
AU - Kawai, Soshi
AU - Sato, Makoto
AU - Yakeno, Aiko
AU - Fujii, Kozo
PY - 2014/1/1
Y1 - 2014/1/1
N2 - Current study investigates effects of a burst frequency (F+) and a momentum coefficient (cμ) of a single dielectric barrier discharge(DBD) actuator on control of deep-stall flow over NACA0015 at a chord Reynolds number of 2.6×105 using large-eddy simulations. The DBD actuator is installed at the leading edge that is near the laminar separation point of the uncontrolled case. The DBD actuator-based flow control with the burst modulation effectively suppresses the leading edge separation and improves the aerodynamic perfor-mance. Better aerodynamic performance and standard deviation of lift are obtained by the cases of F+=6 and 50 compared to the case of F+=1 due to the suppression of separation. Although within the range of the momentum coefficient considered the increase in the momentum coefficient seems to enhance the aerodynamic performance, the manipulating frequency of burst actuation (F+) is more efficient and realistic for the operation of DBD plasma actuator in practical engineering problems.
AB - Current study investigates effects of a burst frequency (F+) and a momentum coefficient (cμ) of a single dielectric barrier discharge(DBD) actuator on control of deep-stall flow over NACA0015 at a chord Reynolds number of 2.6×105 using large-eddy simulations. The DBD actuator is installed at the leading edge that is near the laminar separation point of the uncontrolled case. The DBD actuator-based flow control with the burst modulation effectively suppresses the leading edge separation and improves the aerodynamic perfor-mance. Better aerodynamic performance and standard deviation of lift are obtained by the cases of F+=6 and 50 compared to the case of F+=1 due to the suppression of separation. Although within the range of the momentum coefficient considered the increase in the momentum coefficient seems to enhance the aerodynamic performance, the manipulating frequency of burst actuation (F+) is more efficient and realistic for the operation of DBD plasma actuator in practical engineering problems.
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M3 - Conference contribution
T3 - 52nd Aerospace Sciences Meeting
BT - 52nd Aerospace Sciences Meeting
PB - American Institute of Aeronautics and Astronautics Inc.
T2 - 52nd Aerospace Sciences Meeting 2014
Y2 - 13 January 2014 through 17 January 2014
ER -