Visualization of density variations produced by alternating-current dielectric-barrier-discharge plasma actuators using the background-oriented schlieren method

Atsushi Komuro, Nae Ogura, Momoko Ito, Taku Nonomura, Keisuke Asai, Akira Ando

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Gas density perturbations generated by an alternating-current dielectric-barrier-discharge plasma actuator (ac-DBDPA) are quantitatively visualised using the background-oriented schlieren (BOS) method. A method of setting the optimum boundary condition for solving the Poisson equation in the BOS method is studied, and an integration method for the boundary condition in the vicinity of the plasma where the density change is steep is proposed. The BOS method is applied in two cases with different voltage amplitudes, and the variation in the absolute value of the density is discussed with the discharge properties. The results show a decrease in density in the synthetic jet induced by the ac-DBDPA and a spatiotemporal variation indicating a step-wise gas-heating phenomenon due to plasma discharge.

Original languageEnglish
Article number055002
JournalPlasma Sources Science and Technology
Volume28
Issue number5
DOIs
Publication statusPublished - 2019 May 1

Keywords

  • background oriented schlieren
  • dielectric barrier discharge
  • flow visualization
  • plasma actuator

ASJC Scopus subject areas

  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Visualization of density variations produced by alternating-current dielectric-barrier-discharge plasma actuators using the background-oriented schlieren method'. Together they form a unique fingerprint.

  • Cite this