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On the interplay of body-force distributions and flow speed for dielectric-barrier discharge plasma actuators

Hehner, Marc T. ORCID iD icon 1; Coutinho, Gonçalo 1; Santos Pereira, Ricardo B.; Benard, Nicolas; Kriegseis, Jochen ORCID iD icon 1
1 Institut für Strömungsmechanik (ISTM), Karlsruher Institut für Technologie (KIT)

Abstract:

The dielectric-barrier discharge plasma actuator is a well-established device commonly operated in boundary-layer airflows for active flow control. In the present experimental investigation, their ability to cause momentum transfer to the surrounding fluid is analyzed by means of spatio-temporal body-force distributions in both quiescent air and external airflow conditions. The work is motivated by the limitation to quiescent-air operating conditions of frequent previous efforts. Available analytical velocity-information-based force derivation approaches are contrasted to investigate the actuator performance under conditions of their area of application. Results of body force in quiescent air, in agreement with literature, confirm the major taken assumption for Navier–Stokes-based body-force formulations—a negligible pressure gradient. However, the previous circumstance turns out as an invalid assumption for plasma actuation encountering an external airflow. These outcomes coincide with the findings in the numerical work of (2015 Numerical investigation of plasma-actuator force-term estimations from flow experiments J. Phys. D: Appl. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000160178
Veröffentlicht am 05.07.2023
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Strömungsmechanik (ISTM)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 14.09.2023
Sprache Englisch
Identifikator ISSN: 0022-3727, 1361-6463
KITopen-ID: 1000160178
Erschienen in Journal of Physics D: Applied Physics
Verlag Institute of Physics Publishing Ltd (IOP Publishing Ltd)
Band 56
Heft 37
Seiten Art.-Nr.: 375205
Vorab online veröffentlicht am 16.06.2023
Schlagwörter body force, DBD plasma actuator, force distribution, force magnitude, external flow, fluid-mechanic efficiency, actuator performance
Nachgewiesen in Scopus
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