Journal ArticleDOI
Plasma Actuators for Cylinder Flow Control and Noise Reduction
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In this article, the results of flow-control experiments using single dielectric barrier discharge plasma actuators to control flow separation and unsteady vortex shedding from a circular cylinder in crossflow are reported.Abstract:
In this paper, the results of flow-control experiments using single dielectric barrier discharge plasma actuators to control flow separation and unsteady vortex shedding from a circular cylinder in crossflow are reported. This work is motivated by the need to reduce landing gear noise for commercial transport aircraft via an effective streamlining created by the actuators. The experiments are performed at Re D = 3.3 x 104. Using either steady or unsteady actuation, Karman shedding is totally eliminated, turbulence levels in the wake decrease significantly, and near-field sound pressure levels associated with shedding are reduced by 13.3 dB. In the case of unsteady plasma actuation, an actuation frequency of St D = 1 is found to be most effective. The unsteady actuation has the advantage that total suppression of shedding is achieved for a duty cycle of only 25%. However, because unsteady actuation is associated with an unsteady body force and produces a tone at the actuation frequency, steady actuation is more suitable for noise-control applications.read more
Citations
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Journal ArticleDOI
Dielectric Barrier Discharge Plasma Actuators for Flow Control
TL;DR: A particular type of plasma actuator that has gained wide use is based on a single-dielectric barrier discharge (SDBD) mechanism that has desirable features for use in air at atmospheric pressures as mentioned in this paper.
Journal ArticleDOI
Optimization of Dielectric Barrier Discharge Plasma Actuators for Active Aerodynamic Flow Control
TL;DR: In this paper, the authors present the results of a parametric experimental investigation aimed at optimizing the body force produced by single dielectric barrier discharge plasma actuators used for aerodynamic flow control.
Journal ArticleDOI
Electrical and mechanical characteristics of surface AC dielectric barrier discharge plasma actuators applied to airflow control
Nicolas Benard,Eric Moreau +1 more
TL;DR: In this paper, a wide review on AC surface dielectric barrier discharge (DBD) actuators applied to airflow control is presented and discussed, both electrical and mechanical characteristics of surface DBDs are discussed.
Journal ArticleDOI
Single dielectric barrier discharge plasma enhanced aerodynamics: physics, modeling and applications
TL;DR: A particular type of plasma actuator that has gained wide use is based on a single dielectric barrier discharge (SDBD) mechanism that has desirable features for use in air at atmospheric pressures as mentioned in this paper.
Journal ArticleDOI
Recent developments in DBD plasma flow control
TL;DR: A review of the recent trend of plasma actuator design and to summarise aerodynamic control techniques can be found in this article, where the starting vortex that leads to formation of a plasma wall jet is discussed.
References
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Book
Gas Discharge Physics
TL;DR: In this article, the authors present an overview of the history of electric discharge physics and its application in the field of gas discharging in the presence of longitudinal gradients of charge density.
Journal ArticleDOI
Sound Generation by Turbulence and Surfaces in Arbitrary Motion
TL;DR: In this article, sound generation by turbulence and surfaces in arbitrary motion is discussed, and sound and multipole fields and governing equations are discussed. But sound generation is not discussed in this paper.
Journal ArticleDOI
Dielectric Barrier Discharge Plasma Actuators for Flow Control
TL;DR: A particular type of plasma actuator that has gained wide use is based on a single-dielectric barrier discharge (SDBD) mechanism that has desirable features for use in air at atmospheric pressures as mentioned in this paper.
Journal ArticleDOI
Mechanisms and Responses of a Single Dielectric Barrier Plasma Actuator: Plasma Morphology
TL;DR: In this paper, simultaneous optical, electrical, and thrust measurements of an aerodynamic plasma actuator are presented, which reveal the temporal and macro-scale spatial structure of the plasma and the electrical characteristics of the discharge to the actuator performance as measured by the thrust produced.
Journal ArticleDOI
The transition to turbulence in the wake of a circular cylinder
TL;DR: The position of the region of transition to turbulence and the manner in which turbulence develops are investigated using a hot-wire anemometer to study the character of the flow in the wake of a circular cylinder as mentioned in this paper.
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