Transient growth instability cancelation by a plasma actuator array

Hanson, Ronald; Lavoie, Philippe; Naguib, Ahmed; Morrison, J. F.

doi:10.1007/s00348-010-0877-1

Cited by 68 publications

(36 citation statements)

References 29 publications

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“…These authors demonstrated that by varying the induced force on one of the electrodes, the wall-normal jet can be vectored to produce a pitched jet, similar to a VG jet. In addition, streamwise plasma actuators have been recently used to control turbulent boundary layer separation (Schatzman and Thomas 2010), control noise on a circular cylinder (Kozlov and Thomas 2009), modify supersonic flow (Im et al 2010) and control laminar-turbulent transition (Hanson et al 2010). Roy and Wang (2009) also demonstrated combined spanwise, streamwise and wall-normal flows by using DBD actuators with wavy structure.…”

Section: Introductionmentioning

confidence: 99%

Dielectric-barrier-discharge vortex generators: characterisation and optimisation for flow separation control

Jukes

Choi

2011

Exp Fluids

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We investigated the use of dielectric-barrierdischarge plasma actuators as vortex generators for flow separation control applications. Plasma actuators were placed at a yaw angle to the oncoming flow, so that they produced a spanwise wall jet. Through interaction with the oncoming boundary layer, this created a streamwise longitudinal vortex. In this experimental investigation, the effect of yaw angle, actuator length and plasma-induced velocity ratio was studied. Particular attention was given to the vortex formation mechanism and its development downstream. The DBD plasma actuators were then applied in the form of co-rotating and counter-rotating vortex arrays to control flow separation over a trailing-edge ramp. It was found that the vortex generators were successful in reducing the separation region, even at plasma-to-freestream velocity ratios of less than 10%.

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Section: Introductionmentioning

confidence: 99%

Dielectric-barrier-discharge vortex generators: characterisation and optimisation for flow separation control

Jukes

Choi

2011

Exp Fluids

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“…1 3 manipulate the dynamics of different flows, such as separated flows (Corke and Post 2005;Little and Samimy 2010;McLaughlin et al 2006;Kelley et al 2012;Jukes and Choi 2009), developing shear layers (Sosa et al 2009a;Benard et al 2008;Thomas et al 2008) or boundary layer laminar-to-turbulent transitions (Joussot et al 2010;Grundmann and Tropea 2007;Hanson et al 2010). In most of these papers, the actuator is used in context of open-loop control, but plasma discharges find a new route in the construction of closed-loop strategies by using DBD (Lombardi et al 2012;Rethmel et al 2011;Grundmann and Tropea 2008;Kriegseis et al 2011a).…”

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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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“…Одним из наиболее перспективных приложений является управление с помощью плазменных актуаторов возмущениями и волнами в пограничных и сдвиговых слоях [1][2][3]. Такие исследования проводились для управления двумерными и трехмерными пограничными слоями для различных типов возмущений [4,5], а также для управления аэроакустическими характеристиками сдвиговых слоев в соплах и кавернах [3,[6][7][8]. Ис-пользование актуатора в качестве источника начальных возмущений в пограничном слое зачастую требует точной информации о геометрии воздействия, в том числе в окрестности боковых кромок электродов.…”

Section: поступило в редакцию 27 сентября 2016 гunclassified

Концевые Эффекты При Обтекании Плазменного Актуатора

Моралев¹,

Селивонин²

2017

Письма В Журнал Технической Физики

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Исследована структура течения, формирующегося в пограничном слое за боковой границей разрядной зоны плазменного актуатора на основе диэлектри-ческого барьерного разряда. Показано, что в окрестности границы плазменного слоя существует область с ненулевой компонентой тангенциальной скорости. На некотором удалении от электрода формируется концентрированный вихрь, ось которого ориентирована вдоль линий тока внешнего течения. При на-личии двух близко расположенных границ плазменной области формируется пара вихрей с противоположным направлением вращения. Также впервые визуализированы вихревые возмущения, инициированные в пограничном слое отдельными микроразрядами.

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Transient growth instability cancelation by a plasma actuator array

Cited by 68 publications

References 29 publications

Dielectric-barrier-discharge vortex generators: characterisation and optimisation for flow separation control

Dielectric-barrier-discharge vortex generators: characterisation and optimisation for flow separation control

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

Концевые Эффекты При Обтекании Плазменного Актуатора

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