Effect of Burst Frequency and Reynolds Number on Flow Control Authority of DBD Plasma Actuator on NACA0012 Airfoil

Sulaiman, Taufik; Aono, Hikaru; Sekimoto, Satoshi; Anyoji, Masayuki; Nonomura, Taku; Fujii, Kozo

doi:10.2514/6.2014-1245

Cited by 1 publication

(1 citation statement)

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“…Thus when the flow velocity is higher, the flow structure is less receptive to the unsteady disturbances produced by the plasma actuator and the effect of unsteady actuation would tend to decrease [46]. For example, Asghar et al [47] and Sulaiman et al [48] have shown that the Reynolds number could be used as a scaling parameter for considering the effectiveness of the DBD plasma actuator. Moreover, the configuration of the DBD may influence the potential of the actuator for flow control.…”

Section: Influence Of Bust Conditions On Dominant Frequenciesmentioning

confidence: 99%

Comparison of DBD plasma actuators flow control authority in different modes of actuation

Abdollahzadeh

Páscoa

Oliveira

2018

Aerospace Science and Technology

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The principal mechanisms by which DBD plasma actuators influence flow characteristics, and are thus able to control that flow, depend strongly on their modes of actuation. Here two different modes based on steady and unsteady actuation are compared and investigated. A simple sinusoidal voltage distribution and a duty cycled sinusoidal voltage were considered for these purposes. Leading edge separation around a stalled NACA 0012 airfoil at Re = 3 × 10 6 is considered as test case. A simplified phenomenological model which uses the correct scale of the plasma body force is considered for the modeling of the plasma actuator effects. The steady actuation results show that flow control can be effectively achieved by this mode of operation with continuous injection of momentum in the boundary layer. Unsteady actuation with an imposed frequency equal to the calculated natural frequencies of the flow gives rise to a resonance actuation effect.

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Section: Influence Of Bust Conditions On Dominant Frequenciesmentioning

confidence: 99%