The interaction of exposed electrodes of symmetric plasma actuator in a subsonic flow for controlling the lift force of the wing

V. M. Bocharnikov, V. V. Volodin, A. E. Eyanov

Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow

Abstract: A mechanism of interaction between the exposed electrodes of a symmetric actuator in the subsonic flow is proposed. It is qualitatively explaining the experimental data without using the terms “wall” and “synthetic” jets. The flow control is thus performed by the Coulomb force acting on the charged external flow. The flow of ions from the upstream electrode increases the velocity circulation in the space between the electrodes and at the outer boundary of the separation bubble that occurs at the downstream electrode. Application of the lift force assessment by the proposed mechanism to the experimental data shows that the optimal combination of the supply voltage period and the flight time allows to increase the lift force modulus with the supply power remaining constant.

Keywords: dielectric barrier discharge, symmetric actuator, synthetic jet, separation bubble.

Received: 22.05.2025
Revised: 11.07.2025
Accepted: 11.07.2025

DOI: 10.61011/PJTF.2025.20.61394.20380

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