Velocity Measurements in Synthetic Jet Using Magnetically Driven Surface Discharges Conference Paper uri icon

abstract

  • A magnetically driven DC surface plasma discharge has shown promise for supersonic boundary layer control. Previous experiments in supersonic flow performed using this plasma actuator have shown significant control over the shockwave-turbulent boundary layer interaction region. In this study, the velocity of the surface jet in quiescent air is measured and compared with predictions. A time gated schlieren technique is used to visualize the jet and determine the velocity. The surface plasma column appears as a transverse "arc" between two slightly diverging electrodes and is driven by j × B forces so that it sweeps the neutral gas near the surface creating a surface jet.The jet velocity generated by the magneto-gas dynamic actuator is measured in a 1 Tesla magnetic field at different actuation currents below 100mA in air at pressures in the range of 100 - 400 Torr. Copyright © 2010 by Authors.

author list (cited authors)

  • Kalra, C. S., Zaidi, S. H., & Miles, R. B.
  • Kalra, C., Zaidi, S., & Miles, R.

publication date

  • January 2010