TY - GEN
T1 - Experimental study of burst ratio effect for dielectric-barrier-discharge plasma actuator for separation control
AU - Sekimoto, Satoshi
AU - Tanaka, Naoki
AU - Nonomura, Taku
AU - Nishida, Hiroyuki
AU - Fujii, Kozo
N1 - Funding Information:
This work was supported by JSPS (Japan Society for the Promotion of Science) KAKENHI Grant Number 24246141 and 15H02324.
Publisher Copyright:
© 2017 by Satoshi Sekimoto.
PY - 2017
Y1 - 2017
N2 - An experimental study of the effect of burst ratio for a DBD plasma actuator on control- ling the separated flow is investigated in this paper. Time-averaged pressure measurements and PIV image acquisitions were conducted around a NACA0015 airfoil at the post-stall (αstall + 1deg) and the deep-stall (αstall + 3deg) angles in the condition of the Rec = 63; 000. Experiments were conducted with two types of burst frequency, F+ = 1and6, based on our previous researches. Results of time-averaged pressure measurement show that actuation with the high burst ratio can enhance turbulent transition strongly. Phase-locked PIV visualization shows the generation of multiple vorticies from the shear layer with burst actuation and the process of the vortex-pairing. This visualization reveals that F+ = 1, BR = 50% actuation generates twice vorticies than the other F+ = 1 actuations at the post-stall angle.
AB - An experimental study of the effect of burst ratio for a DBD plasma actuator on control- ling the separated flow is investigated in this paper. Time-averaged pressure measurements and PIV image acquisitions were conducted around a NACA0015 airfoil at the post-stall (αstall + 1deg) and the deep-stall (αstall + 3deg) angles in the condition of the Rec = 63; 000. Experiments were conducted with two types of burst frequency, F+ = 1and6, based on our previous researches. Results of time-averaged pressure measurement show that actuation with the high burst ratio can enhance turbulent transition strongly. Phase-locked PIV visualization shows the generation of multiple vorticies from the shear layer with burst actuation and the process of the vortex-pairing. This visualization reveals that F+ = 1, BR = 50% actuation generates twice vorticies than the other F+ = 1 actuations at the post-stall angle.
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U2 - 10.2514/6.2017-1688
DO - 10.2514/6.2017-1688
M3 - Conference contribution
AN - SCOPUS:85017198782
T3 - AIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting
BT - AIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting
PB - American Institute of Aeronautics and Astronautics Inc.
T2 - 55th AIAA Aerospace Sciences Meeting
Y2 - 9 January 2017 through 13 January 2017
ER -