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Evaluation of Dielectric-Barrier-Discharge Actuator Substrate MaterialsA key, enabling element of a dielectric barrier discharge (DBD) actuator is the dielectric substrate material. While various investigators have studied the performance of different homogeneous materials, most often in the context of related DBD experiments, fundamental studies focused solely on the dielectric materials have received less attention. The purpose of this study was to conduct an experimental assessment of the body-force-generating performance of a wide range of dielectric materials in search of opportunities to improve DBD actuator performance. Materials studied included commonly available plastics and glasses as well as a custom-fabricated polyimide aerogel. Diagnostics included static induced thrust, electrical circuit parameters for 2D surface discharges and 1D volume discharges, and dielectric material properties. Lumped-parameter circuit simulations for the 1D case were conducted showing good correspondence to experimental data provided that stray capacitances are included. The effect of atmospheric humidity on DBD performance was studied showing a large influence on thrust. The main conclusion is that for homogeneous, dielectric materials at forcing voltages less than that required for streamer formation, the material chemical composition appears to have no effect on body force generation when actuator impedance is properly accounted for.
Document ID
20150000539
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Wilkinson, Stephen P. (NASA Langley Research Center Hampton, VA, United States)
Siochi, Emilie J. (NASA Langley Research Center Hampton, VA, United States)
Sauti, Godfrey (National Inst. of Aerospace Hampton, VA, United States)
Xu, Tian-Bing (National Inst. of Aerospace Hampton, VA, United States)
Meador, Mary Ann (NASA Glenn Research Center Cleveland, OH, United States)
Guo, Haiquan (Ohio Aerospace Inst. Brook Park, OH, United States)
Date Acquired
January 16, 2015
Publication Date
June 16, 2014
Subject Category
Solid-State Physics
Electronics And Electrical Engineering
Report/Patent Number
NF1676L-17760
Meeting Information
Meeting: AIAA Fluid Dynamics Conference
Location: Atlanta, GA
Country: United States
Start Date: June 16, 2014
End Date: June 20, 2014
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
WBS: WBS 694478.02.93.02.12.19.23
Distribution Limits
Public
Copyright
Public Use Permitted.

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