Effects of pulse polarity on nanosecond pulse driven dielectric barrier discharge plasma actuators

Robert A. Dawson, Jesse C Little

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

Abstract

Nanosecond pulse driven dielectric barrier discharge plasma actuators are studied in quiescent air using a power supply capable of negative and positive polarity waveforms. The effects of pulse amplitude, actuator length and dielectric thickness are also investigated. Schlieren images are used to estimate the relative heating effects for each polarity. Electrical measurements are acquired simultaneously. Negative polarity pulses develop slightly more per unit length energy for thin actuators while positive polarity is slightly higher for thicker actuators. In most cases, the difference in per unit length energy produced by positive and negative pulses on equivalent actuators is not outside the measurement uncertainty. Negative polarity pulses are found to produce a stronger pressure wave across the majority of the test matrix. Results indicate that the negative polarity pulse more efficiently couples electrical energy to the near surface gas as heat. This suggests negative polarity pulses may be preferred for flow control applications.

Original languageEnglish (US)
Title of host publication43rd Fluid Dynamics Conference
StatePublished - 2013
Event43rd AIAA Fluid Dynamics Conference - San Diego, CA, United States
Duration: Jun 24 2013Jun 27 2013

Other

Other43rd AIAA Fluid Dynamics Conference
CountryUnited States
CitySan Diego, CA
Period6/24/136/27/13

Fingerprint

Actuators
Plasmas
Flow control
Discharge (fluid mechanics)
Gases
Heating
Air

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Energy Engineering and Power Technology
  • Aerospace Engineering
  • Mechanical Engineering

Cite this

Effects of pulse polarity on nanosecond pulse driven dielectric barrier discharge plasma actuators. / Dawson, Robert A.; Little, Jesse C.

43rd Fluid Dynamics Conference. 2013.

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

Dawson, RA & Little, JC 2013, Effects of pulse polarity on nanosecond pulse driven dielectric barrier discharge plasma actuators. in 43rd Fluid Dynamics Conference. 43rd AIAA Fluid Dynamics Conference, San Diego, CA, United States, 6/24/13.
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