Results 261 to 270 of about 6,989 (309)
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Supersonic Plasma and Thermal Actuator
46th AIAA Aerospace Sciences Meeting and Exhibit, 2008In supersonic flows control by thermal and plasma actuators present complex problem because it is necessary to produce vortexes with circulation compared the supersonic flow. Plasma control of supersonic flow is much more difficult problem because of complex plasma chemistry and plasma electrodynamics.
Eduard Son +4 more
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Experimental and numerical characterization of a plasma actuator in continuous and pulsed actuation
Sensors and Actuators A: Physical, 2012Abstract Dielectric Barrier Discharge actuators are simulated using experimentally determined body force distributions. This work aims at validation and verification of the force measurement technique and the assumptions involved. The experimental body force distributions are implemented in a numerical flow solver and test cases are simulated for two
M. Kotsonis, S. Ghaemi
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Performance Improvement of Turbomachinery Using Plasma Actuators
Volume 7: Turbomachinery, Parts A, B, and C, 2011This work deals with the computational modeling of the single dielectric barrier discharge (SDBD) plasma actuator and its applications as a flow actuator. In the literature, plasma actuators have been used especially in order to control boundary layer separation.
DE GIORGI, Maria Grazia +2 more
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Diagnostics for characterisation of plasma actuators
Measurement Science and Technology, 2015The popularity of plasma actuators as flow control devices has sparked a flurry of diagnostic efforts towards their characterisation. This review article presents an overview of experimental investigations employing diagnostic techniques specifically aimed at AC dielectric barrier discharge, DC corona and nanosecond pulse plasma actuators.
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Turbulent boundary-layer control with plasma actuators
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2011This paper reviews turbulent boundary-layer control strategies for skin-friction reduction of aerodynamic bodies. The focus is placed on the drag-reduction mechanisms by two flow control techniques—spanwise oscillation and spanwise travelling wave, which were demonstrated to give up to 45 per cent skin-friction reductions. We show that these techniques
Choi KS, Jukes T, Whalley R
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Impact of Pressure and Temperature on the Performance of Plasma Actuators
AIAA Journal, 2010FB = body force induced on the fluid by the actuator per unit of actuator span, mN=m FNet = net actuator force of (FB F ) per unit of actuator span, mN=m F = shear force at the wall, induced by the plasma actuator flow, per unit of actuator span, mN=m u = axial velocity component, m=s v = normal velocity component, m=s x = axial position with respect ...
Philippe Versailles +2 more
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Numerical Analysis for Plasma Dynamics in SDBD Plasma Actuator
41st Plasmadynamics and Lasers Conference, 20102Time evolution of discharge plasma in the SDBD plasma was simulated by the simplest fluid model; electron and single positive ion species were considered and all volume ionization is the electron-impact ionization. The simulation result in the case of the triangular applied voltage waveform was qualitatively compared with some experimental results ...
Hiroyuki Nishida, Takashi Abe
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Plasma Volumetric Effects on the Force Production of a Plasma Actuator
AIAA Journal, 2010Dielectric barrier discharge plasma actuators are examined experimentally and computationally. Experimental temporal force measurements show that the plasma actuator produces two positive (accelerating) forces per ac cycle. While the plasma is ignited, the actuator experiences an accelerating force, and, when the plasma is extinguished, a decelerating ...
G. I. Font +2 more
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Plasma Flaps and Plasma Slats: An Application of Weakly-Ionized Plasma Actuators
2nd AIAA Flow Control Conference, 2004The experimental validation of an application of weakly-ionized plasma actuators for improved aerodynamic performance of multi-element wings and wings with movable control surfaces is presented. Two spanwise arrays of plasma actuators, configured to produce a wall-jet effect, were applied on the suction surface of a two-dimensional NACA 0015 wing model,
Thomas Corke, Chuan He, Mehul Patel
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Switching Behavior of a Plasma-Fluidic Actuator
45th AIAA Aerospace Sciences Meeting and Exhibit, 2007This work presents the plasma-fluidic actuator as a new type of flow control actuator. The device combines the best features of plasma actuators and fluidic oscillators to create an actuator that decouples the actuation frequency from the flow rate and overcomes the velocity limitations of the plasma actuator.
James Gregory +3 more
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