Single Nanosecond Dielectric Barrier Discharge and Pulsed Sliding Discharge Applied to Separation Control Along a NACA 0015 Airfoil

Bayoda, Kossi D.; Bénard, Nicolas; Moreau, E.

doi:10.2514/6.2015-2344

Cited by 3 publications

(1 citation statement)

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“…The discharge is directed upstream such that the exposed electrode does not disturb the incoming boundary layer before encountering the plasma discharge. This counter-flow setup was shown to be more effective than the co-flow arrangement (Bayoda et al 2015a). The covered ground electrode is 12.7 mm (1/2 in.)…”

Section: Ns-dbd Plasma Actuatorsmentioning

confidence: 95%

Post-stall flow control using nanosecond pulse driven dielectric barrier discharge plasma actuators

Little

Singh

Ashcraft

et al. 2019

Plasma Sources Sci. Technol.

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The efficacy of thermal perturbations generated by nanosecond pulse driven dielectric barrier discharge (ns-DBD) plasma actuators for post-stall flow control is explored on a NACA 0012 airfoil. Baseline and controlled flow fields are studied using static pressure measurements, particle image velocimetry and constant temperature anemometry. Experiments are primarily performed at Re=0.74×10 6 (U ∞ =40 m s −1 ) and α=18°. Three regimes of forcing are identified corresponding to separation control (0.92<F + <1.52), bluff body shedding (0.23<F + <0.92) and an impulse-like response (F + <0.23). The response of the flow to a single high voltage pulse is also examined and compared to other studies of transient separation control. Results show that the global structure of the controlled flow is not specific to ns-DBD plasma actuator forcing. Rather, it is the local behavior of the ns-DBD that results in control authority at conditions that are challenging for the majority of active flow control actuators that rely on zero net mass flux momentum addition. The implications of these findings as well as open questions and suggestions for future work are discussed.

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Section: Ns-dbd Plasma Actuatorsmentioning

confidence: 95%