Localized micro-discharges group dielectric barrier discharge vortex generators: Disturbances source for active transition control

Abstract

In this study, a new type of dielectric barrier discharge plasma actuator for boundary layer control, based on the controllable inhomogeneity of the discharge along the exposed electrode, is developed. The structure of the flow, generated by the isolated groups of microdischarges, was studied in detail in quiescent conditions. In the two-dimensional laminar boundary layer, the flow structure downstream of the actuator was studied for various sweep angles of the electrode. The equivalent model of the actuator, including the force and heat sources, is formulated based on the analysis of the flow created by the actuator in quiescent conditions. The model is verified by simulating the flow downstream of the actuator in two-dimensional boundary layer. As a final step, the applicability of the localized microdischarge group actuator for active transition control on a swept wing was studied. The generation of a cross-flow mode by the actuator was demonstrated in numerical simulation for low-velocity experiment conditions.

Keywords

Boundary layer transition dielectric barrier discharge killer mode plasma actuators swept wing virtual roughness elements

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References

Saric

Carpenter

Reed

. Passive control of transition in three-dimensional boundary layers, with emphasis on discrete roughness elements. Philos Trans R Soc A Math Phys Eng Sci 2011; 369: 1352–1364.

Dörr

Kloker

. Transition control in a three-dimensional boundary layer by direct attenuation of nonlinear crossflow vortices using plasma actuators. Int J Heat Fluid Flow 2016; 61: 449–465.

Chernyshev S, Kiselev A and Kuryachii A. Electrogasdynamic excitation of controlling disturbances near a swept wing leading edge. In: AIP conference proceedings, ICMAR, Perm, Russia, 27 June–3 July 2016, vol. 1770, p. 20013.

Dörr

Kloker

. Stabilisation of a three-dimensional boundary layer by base-flow manipulation using plasma actuators. J Phys D Appl Phys 2015; 48: 285205–285205.

Serpieri J, Yadala Venkata S and Kotsonis M. Towards laminar flow control on swept wings with AC-DBD plasma actuators as active roughness. In: 55th AIAA aerospace sciences meeting, Grapevine, Texas, 9–13 January 2017, p.1459.

Kriegseis

Simon

Grundmann

. Towards in-flight applications? A review on dielectric barrier discharge-based boundary-layer control. Appl Mech Rev 2016; 68: 20802–20802.

Moreau

. Airflow control by non-thermal plasma actuators. J Phys D Appl Phys 2007; 40: 605–636.

Leonov

Adamovich

Soloviev

. Dynamics of near-surface electric discharges and mechanisms of their interaction with the airflow. Plasma Sources Sci Technol 2016; 25: 63001–63001.

Santhanakrishnan A and Jacob JD. On plasma synthetic jet actuators. In: Proceedings of 44th AIAA aerospace sciences meeting and exhibit, Reno, NV, USA, 9–12 January 2006, p. 317.

10.

Humble

Craig

Vadyak

, et al. Spatiotemporal structure of a millimetric annular dielectric barrier discharge plasma actuator. Phys Fluids 2013; 25: 17103–17103.

11.

Durscher R and Roy S. Induced flow from serpentine plasma actuators acting in quiescent air. In: 49th AIAA aerospace sciences meeting including the new horizons forum and aerospace exposition, Orlando, FL, USA, 4–7 January 2011, AIAA-2011-957.

12.

Moralev I, Sherbakova V, Kazansky P, et al. The structure of the dielectric barrier discharge and its effect on the discharge initiated gasdynamic disturbances. In: Proceedings of 6th EUCASS, Krakow, Poland, 29 June to 3 July 2015.

13.

Jukes

Choi

K-S

. On the formation of streamwise vortices by plasma vortex generators. J Fluid Mech 2013; 733: 370–393.

14.

Moralev

Selivonin

. Edge effects in flow around a plasma actuator. Tech Phys Lett 2017; 43: 220–223.

15.

Kriegseis J, Schwarz C, Duchmann A, et al. PIV-based estimation of DBD plasma-actuator force terms. In: 50th AIAA aerospace sciences meeting including the new horizons forum and aerospace exposition, Nashville, TN, USA, 2012, AIAA-2012-411.

16.

Bogdanova

Ryzhov

. Disturbances in viscouse fluid flow generated by vibrators operating at supercritical frequencies. Zhurn Pricl Math Techn Phys 1982; 4: 65–72. in Russian).