Force measurements of single and double barrier DBD plasma actuators in quiescent air

Hoskinson, Alan R.; Hershkowitz, N.; Ashpis, David E.

doi:10.1088/0022-3727/41/24/245209

Cited by 103 publications

(70 citation statements)

References 24 publications

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“…The material used for the electrode of a DBD plasma actuator does not have a strong influence on its effectiveness. This has been verified in numerous studies without evidencing a clear enhancement of the momentum transfer (Hoskinson et al 2009). However, a stronger electric field should increase the ionization rate and subsequently should affect the EHD force.…”

Section: Influence Of the Active Electrodementioning

confidence: 74%

“…The thrust improvement evolves linearly with the reduction in the electrode size, the maximal thrust being observed with a thin planar active electrode of 80 μm. The linear increase in thrust by reducing the electrode thickness has been recently contradicted in Hoskinson et al (2008bHoskinson et al ( , 2009Hoskinson et al ( , 2010. By extending the thickness range (from 1 mm down to 0.13 μm), they showed an exponentially increasing thrust when the diameter was reduced.…”

Section: Influence Of the Active Electrodementioning

confidence: 99%

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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: Influence Of the Active Electrodementioning

confidence: 74%

Section: Influence Of the Active Electrodementioning

confidence: 99%

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

2014

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“…These are calculated using Welch's method 31 using eight segments over the entire signal with 50% overlap. The number of points taken for the fast Fourier transform ͑FFT͒ is 2 16 . The power spectral density ͑PSD͒ is presented here for the unfiltered signals.…”

Section: A Quiescent Flowmentioning

confidence: 99%

“…[8][9][10] Several parametric and optimization studies have been performed for maximizing the produced body force and induced velocity. [11][12][13][14][15][16] More recently the use of advanced techniques such as nanopulse discharges 17,18 and three-electrode designs 19 have been proposed. The general consensus of these studies is that although the actuators have the potential for efficient flow control at low velocity regimes, their effectiveness decreases with increased Reynolds number.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on dielectric barrier discharge actuators operating in pulse mode

Kotsonis

Veldhuis

2010

Journal of Applied Physics

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An experimental investigation is performed on the operation of dielectric barrier discharge plasma actuators used as manipulators of secondary and unsteady flow structures such as boundary layer instabilities or shedding vortices. The actuators are tested mainly in pulse mode. High sample rate hot-wire measurements of the induced velocity field downstream of the actuator are taken for the cases of pulse actuation in still air as well as in a laminar boundary layer. Complementary voltage and current measurements are taken to calculate power consumption. Additionally, a study on the influence of the pulse frequency and duty cycle of actuation is performed. Results show the effectiveness of plasma actuators in inducing fluctuating components of velocity when operated in pulse mode. Spectral analysis reveals the connection between the actuator driving signal and the induced flowfield. The magnitude as well as the consistency of the resulting fluctuating field are dependent on both the duty cycle and the pulse frequency. An empirical operational envelope based on phenomenological observations is proposed, for the use of the actuators at specific flow and operational conditions given in the paper.

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“…Therefore, the efficiency of the second operational stage is often substituted by a dimensional coefficient called effectiveness that ranges between 0 and 1 [16,17,18]. This method to quantify efficiency cannot be applied for the ns-DBDs, since their control mechanism is based on a thermal effect [19,20].…”

Section: Introductionmentioning

confidence: 99%

Experimental method to quantify the efficiency of the first two operational stages of nanosecond dielectric barrier discharge plasma actuators

Correale

Avallone

Starikovskiy

2016

J. Phys. D: Appl. Phys.

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Force measurements of single and double barrier DBD plasma actuators in quiescent air

Cited by 103 publications

References 24 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

Experimental study on dielectric barrier discharge actuators operating in pulse mode

Experimental method to quantify the efficiency of the first two operational stages of nanosecond dielectric barrier discharge plasma actuators

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