Effects of burst frequency and momentum coefficient of DBD actuator on control of deep-stall flow around NACA0015 at Rec=2.6×105

Hikaru Aono; Koichi Okada; Taku Nonomura; Soshi Kawai; Makoto Sato; Aiko Yakeno; Kozo Fujii

Effects of burst frequency and momentum coefficient of DBD actuator on control of deep-stall flow around NACA0015 at Re_c=2.6×10⁵

Hikaru Aono, Koichi Okada, Taku Nonomura, Soshi Kawai, Makoto Sato, Aiko Yakeno, Kozo Fujii

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Current study investigates effects of a burst frequency (F⁺) and a momentum coefficient (c_μ) 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.

Original language	English
Title of host publication	52nd Aerospace Sciences Meeting
Publisher	American Institute of Aeronautics and Astronautics Inc.
ISBN (Electronic)	9781624102561
Publication status	Published - 2014 Jan 1
Externally published	Yes
Event	52nd Aerospace Sciences Meeting 2014 - National Harbor, United States Duration: 2014 Jan 13 → 2014 Jan 17

Publication series

Name	52nd Aerospace Sciences Meeting

Other

Other	52nd Aerospace Sciences Meeting 2014
Country/Territory	United States
City	National Harbor
Period	14/1/13 → 14/1/17

ASJC Scopus subject areas

Aerospace Engineering

Cite this

Effects of burst frequency and momentum coefficient of DBD actuator on control of deep-stall flow around NACA0015 at Re_c=2.6×10⁵. / Aono, Hikaru; Okada, Koichi; Nonomura, Taku ; Kawai, Soshi; Sato, Makoto; Yakeno, Aiko; Fujii, Kozo.

52nd Aerospace Sciences Meeting. American Institute of Aeronautics and Astronautics Inc., 2014. (52nd Aerospace Sciences Meeting).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Aono, H, Okada, K, Nonomura, T , Kawai, S, Sato, M, Yakeno, A & Fujii, K 2014, Effects of burst frequency and momentum coefficient of DBD actuator on control of deep-stall flow around NACA0015 at Re_c=2.6×10⁵. in 52nd Aerospace Sciences Meeting. 52nd Aerospace Sciences Meeting, American Institute of Aeronautics and Astronautics Inc., 52nd Aerospace Sciences Meeting 2014, National Harbor, United States, 14/1/13.

Aono, Hikaru ; Okada, Koichi ; Nonomura, Taku ; Kawai, Soshi ; Sato, Makoto ; Yakeno, Aiko ; Fujii, Kozo. / Effects of burst frequency and momentum coefficient of DBD actuator on control of deep-stall flow around NACA0015 at Re_c=2.6×10⁵. 52nd Aerospace Sciences Meeting. American Institute of Aeronautics and Astronautics Inc., 2014. (52nd Aerospace Sciences Meeting).

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abstract = "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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