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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish
Title of host publication52nd Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Electronic)9781624102561
Publication statusPublished - 2014 Jan 1
Externally publishedYes
Event52nd Aerospace Sciences Meeting 2014 - National Harbor, United States
Duration: 2014 Jan 132014 Jan 17

Publication series

Name52nd Aerospace Sciences Meeting

Other

Other52nd Aerospace Sciences Meeting 2014
CountryUnited States
CityNational Harbor
Period14/1/1314/1/17

ASJC Scopus subject areas

  • Aerospace Engineering

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