Electrohydrodynamic Airflow Control Along a Flat Plate by a DC Surface Corona Discharge - Velocity Profile and Wall Pressure Measurements

Léger, Luc; Moreau, Éric; Touchard, G.

doi:10.2514/6.2002-2833

Cited by 49 publications

(34 citation statements)

References 19 publications

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“…However, it does not allows us to measure both components of the electric wind velocity. To characterize the electric wind topology, 2D velocity fields can be obtained by particle image velocimetry (PIV), such as in Léger et al (2001Léger et al ( , 2002 for the first time. Several authors, as Kriegseis et al (2011b) and Kotsonis and Ghaemi (2011) among others, use now this type of system.…”

Section: Time-averaged Electric Wind Topologymentioning

confidence: 99%

Electrical and mechanical characteristics of surface AC dielectric barrier discharge plasma actuators applied to airflow control

2014

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Sherman 1998). Then, different groups already having background experiences on corona discharges and their interactions with quiescent or moving flows formed a new highly motivated community that contributes to the dissemination of the advantages and relevancy of non-thermal plasma discharges as an alternative to conventional flow actuators (Moreau 2007;Corke et al. 2009Corke et al. , 2010. Rapidly, the number of publications in journals and conference exponentially grows to finally become a full interdisciplinary research field. The sudden interest for surface dielectric barrier discharge (DBD) energized by AC high voltage for manipulating airflows was initially motivated by the easy implementation of these actuators and a possible retrofitting on existing airfoils. They have the capability to be mounted at the surface of linear or curved objects with a minimal protrusion in the flow. Beside, their location can be changed faster than other active actuators that require a new model for each new position of actuation. The amplitude and frequency of the electrohydrodynamic (EHD) force produced by the surface plasma are directly connected to the driven electrical signal, this being a clear advantage for parametric studies on the sensibility of one flow to well-defined perturbations. Indeed, the EHD force (also referred as EFD force for electro-fluid dynamic) and the resulting produced flow called electric wind or ionic wind are due to electric field that acts on charged species. These charged species are produced by physical phenomena such as ionization, recombination, attachment, detachment and photoionization, which occur at timescale of a few picoseconds (Boeuf et al. 2009a). Subsequently, the produced body force, despite being low-pass filtered by fluid mechanical laws (viscosity, energy exchanges, dissipation) to produce electric wind, has a high bandwidth. Plasma actuators, and more specifically dielectric barrier discharge actuators, have demonstrated their authority to Abstract The present paper is a wide review on AC surface dielectric barrier discharge (DBD) actuators applied to airflow control. Both electrical and mechanical characteristics of surface DBD are presented and discussed. The first half of the present paper gives the last results concerning typical single plate-to-plate surface DBDs supplied by a sine high voltage. The discharge current, the plasma extension and its morphology are firstly analyzed. Then, time-averaged and time-resolved measurements of the produced electrohydrodynamic force and of the resulting electric wind are commented. The second half of the paper concerns a partial list of approaches having demonstrated a significant modification in the discharge behavior and an increasing of its mechanical performances. Typically, single DBDs can produce mean force and electric wind velocity up to 1 mN/W and 7 m/s, respectively. With multi-DBD designs, velocity up to 11 m/s has been measured and force up to 350 mN/m.

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Section: Time-averaged Electric Wind Topologymentioning

confidence: 99%

Electrical and mechanical characteristics of surface AC dielectric barrier discharge plasma actuators applied to airflow control

2014

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“…The momentum transfer to the flow is covered by the fractional efficiency of electrokinetic conversion for the electric wind of the corona discharge as the relation of the fluid mechanic (output) power P FM to the electrical actuator a) 13 ). Based on this report, the fluid mechanic efficiency can be defined [14][15][16][17] as…”

Section: Power Flow Diagrammentioning

confidence: 99%

On the classification of dielectric barrier discharge plasma actuators: A comprehensive performance evaluation study

Kriegseis

Duchmann

Tropea

et al. 2013

Journal of Applied Physics

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“…The system of equations (7,8,9) is highly nonlinear and stiff, and therefore numerically difficult to solve. The numerical scheme implemented in this work has been adapted from that of Boeuf,2 and uses an implicit difference representation based on the exponential discretization method of Scharfetter and Gummel.…”

Section: Mmentioning

confidence: 99%

“…The use of plasma actuators in such a role may offer several advantages over traditional flow control devices (e.g., slats, flaps, slots). Some of these advantages may be -Reduced size and weight -Increased reliability 6 -Increased aerodynamic agility -Reduced drag 7 -High bandwidth No tail fins (leading to increased weapon load out of combat aircraft) 9 Plasma flow control devices will, no doubt, have disadvantages in comparison to traditional flow control devices as well. For example, plasma actuators may not perform well in adverse weather conditions and will require electrical power to operate, although it has been shown that this latter requirement can be mitigated through a "smart" actuator methodology.II Whether plasma actuators offer any demonstrable advantages over traditional flow control methodologies remains to be seen.…”

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Preliminary Development of a Computational Model of a Dielectric Barrier Discharge

Hilbun

Case²

2005

43rd AIAA Aerospace Sciences Meeting and Exhibit

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Electrohydrodynamic Airflow Control Along a Flat Plate by a DC Surface Corona Discharge - Velocity Profile and Wall Pressure Measurements

Cited by 49 publications

References 19 publications

Electrical and mechanical characteristics of surface AC dielectric barrier discharge plasma actuators applied to airflow control

Electrical and mechanical characteristics of surface AC dielectric barrier discharge plasma actuators applied to airflow control

On the classification of dielectric barrier discharge plasma actuators: A comprehensive performance evaluation study

Preliminary Development of a Computational Model of a Dielectric Barrier Discharge

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