International Journal of Aerospace Engineering (Jan 2010)

Computational Study on Effect of Synthetic Jet Design Parameters

  • Koichi Okada,
  • Akira Oyama,
  • Kozo Fujii,
  • Koji Miyaji

DOI
https://doi.org/10.1155/2010/364859
Journal volume & issue
Vol. 2010

Abstract

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Effects of amplitude and frequency of synthetic jet on the characteristics of induced jet are investigated. To estimate effects of the parameters, flow inside the synthetic jet cavity and orifice and the outer flow is simultaneously simulated using large-eddy simulation (LES). Comparison of the present LES result with the experimental data shows that three-dimensional LES of the flow inside the cavity is essential for accurate estimation of the velocity and velocity fluctuation of the synthetic jet. Comparison of the present results under various flow conditions shows that amplitude and frequency can control profiles of time-averaged vertical velocity and fluctuation of the vertical velocity as well as damping rate of the induced velocity and fluctuation.