Experimental study of burst ratio effect for dielectric-barrier-discharge plasma actuator for separation control

Satoshi Sekimoto, Naoki Tanaka, Taku Nonomura, Hiroyuki Nishida, Kozo Fujii

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

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationAIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Electronic)9781624104473
DOIs
Publication statusPublished - 2017
Externally publishedYes
Event55th AIAA Aerospace Sciences Meeting - Grapevine, United States
Duration: 2017 Jan 92017 Jan 13

Publication series

NameAIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting

Other

Other55th AIAA Aerospace Sciences Meeting
CountryUnited States
CityGrapevine
Period17/1/917/1/13

ASJC Scopus subject areas

  • Aerospace Engineering

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