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Control of Supersonic Cavity Flow Using Plasma Actuators by N. Webb; M. Samimy is a Engineering article available to read on EtoBox.

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Cavity flows are present in a wide range of aerospace applications. The pressure fluctuations associated with cavity resonance have made them the target of significant flow control efforts aimed at suppressing resonance. A potential scramjet application for cavity flows may require resonance enhancement in addition to resonance suppression. Localized arc filament plasma actuators have demonstrated the ability to control a high subsonic cavity flow. This work investigates the control authority of the localized arc filament plasma actuators in a supersonic (M 2.24) cavity flow. The localized arc filament plasma actuators significantly suppress the primary cavity resonance of a naturally and strongly resonating cavity. Additionally, the trend in effectiveness suggests that introducing mode competition through the excitation of the Kelvin-Helmholtz instability, and thereby influencing the shear-layer structure formation process, is the likely control mechanism. The effects of two-dimensional and three-dimensional excitation are explored. Although two-dimensional excitation achieves the greatest resonance suppression, threedimensional excitation shows similar suppression with significan

Who reads Control of Supersonic Cavity Flow Using Plasma Actuators?

Author

N. Webb; M. Samimy

Publisher

American Institute of Aeronautics and Astronautics (AIAA)

Published

2017

Language

EN

Field

Engineering (Physical Sciences)