Experimental characterization of a pulsed plasma jet

Todd M. Reedy; Nachiket V. Kale; J. Craig Dutton; Gregory S. Elliott

doi:10.2514/1.J052022

Experimental characterization of a pulsed plasma jet

Todd M. Reedy, Nachiket V. Kale, J. Craig Dutton, Gregory S. Elliott

Research output: Contribution to journal › Article › peer-review

Abstract

An experimental characterization of a pulsed plasma jet to determine its potential authority as a supersonic flow-control actuator was studied. A high-voltage (HV) trigger of approximately 3.6 kV was used to ionize the air gap between an anode and a cathode. The subsequent electric arc discharge deposits energy from a capacitor charged to a voltage near 570 V. Three capacitor sizes were examined: 0.25, 2, and 25 μF with calculated energy additions of 41 mJ, 330 mJ, and 4.0 J, respectively. Schlieren images and particle image velocimetry measurements revealed that the jet structure, local velocity, penetration depth, and exhaust duration are strongly dependent on capacitance, and thus energy deposition. Peak velocities were measured to be 130, 320, and 496 m/s for the three capacitances tested. A pulsating jet behavior was observed for each capacitor case and is reasoned to be the result of cavity wave dynamics.

Original language	English (US)
Pages (from-to)	2027-2031
Number of pages	5
Journal	AIAA journal
Volume	51
Issue number	8
DOIs	https://doi.org/10.2514/1.J052022
State	Published - Aug 2013

ASJC Scopus subject areas

Aerospace Engineering

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10.2514/1.J052022

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title = "Experimental characterization of a pulsed plasma jet",

abstract = "An experimental characterization of a pulsed plasma jet to determine its potential authority as a supersonic flow-control actuator was studied. A high-voltage (HV) trigger of approximately 3.6 kV was used to ionize the air gap between an anode and a cathode. The subsequent electric arc discharge deposits energy from a capacitor charged to a voltage near 570 V. Three capacitor sizes were examined: 0.25, 2, and 25 μF with calculated energy additions of 41 mJ, 330 mJ, and 4.0 J, respectively. Schlieren images and particle image velocimetry measurements revealed that the jet structure, local velocity, penetration depth, and exhaust duration are strongly dependent on capacitance, and thus energy deposition. Peak velocities were measured to be 130, 320, and 496 m/s for the three capacitances tested. A pulsating jet behavior was observed for each capacitor case and is reasoned to be the result of cavity wave dynamics.",

author = "Reedy, {Todd M.} and Kale, {Nachiket V.} and Dutton, {J. Craig} and Elliott, {Gregory S.}",

note = "Funding Information: The authors would like to thank the Army Research Office (ARO) with Frederick Ferguson as program monitor (grant number W911NF-08-1-0434), and the Air Force Office of Scientific Research (AFOSR) with John Schmisseur as program monitor (grant number FA9550-10-1-0111) for supporting this research. Additionally, the authors would like to thank their colleagues Doyle Knight and Kellie Anderson for providing the code used to determine the cavity geometry. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of ARO or AFOSR.",

year = "2013",

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AU - Reedy, Todd M.

AU - Kale, Nachiket V.

AU - Dutton, J. Craig

AU - Elliott, Gregory S.

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PY - 2013/8

Y1 - 2013/8

N2 - An experimental characterization of a pulsed plasma jet to determine its potential authority as a supersonic flow-control actuator was studied. A high-voltage (HV) trigger of approximately 3.6 kV was used to ionize the air gap between an anode and a cathode. The subsequent electric arc discharge deposits energy from a capacitor charged to a voltage near 570 V. Three capacitor sizes were examined: 0.25, 2, and 25 μF with calculated energy additions of 41 mJ, 330 mJ, and 4.0 J, respectively. Schlieren images and particle image velocimetry measurements revealed that the jet structure, local velocity, penetration depth, and exhaust duration are strongly dependent on capacitance, and thus energy deposition. Peak velocities were measured to be 130, 320, and 496 m/s for the three capacitances tested. A pulsating jet behavior was observed for each capacitor case and is reasoned to be the result of cavity wave dynamics.

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Experimental characterization of a pulsed plasma jet

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