Effect of DBD plasma actuators on vortical structures in a turbulent mixing layer

Conference paper (2019)

Authors

Srikar Yadala Aerodynamics - Aerospace Engineering , CNRS-Université de Poitiers-ISAE-ENSMA, Institut PPrime
Nicolas Benard CNRS-Université de Poitiers-ISAE-ENSMA
M. Kotsonis Aerodynamics - Aerospace Engineering
Franck Kerherve CNRS-Université de Poitiers-ISAE-ENSMA
Eric Moreau CNRS-Université de Poitiers-ISAE-ENSMA
Research Group
Aerodynamics (Aerospace Engineering) (TU Delft)
Copyright: © 2019 Srikar Yadala, Nicolas Benard, M. Kotsonis, Franck Kerherve, Eric Moreau
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Published Date

2019

Language

English

Reuse Rights

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Faculty

Aerospace Engineering

Department

Flow Physics and Technology

Research Group

Aerodynamics

Abstract

The influence of linear (spanwise-uniform) forcing applied by a DBD plasma actuator on the growth of a turbulent mixing layer and the dynamics of large-scale spanwise vortices, are investigated experimentally. Furthermore, the freestream turbulence intensity in the low-velocity stream is maintained at a high level to examine its impact on the control-authority of the applied forcing. The influence of the applied forcing on the dynamics and interactions of the spanwise vortices in the mixing layer is apparent. However, the growth rate of the mixing layer is not affected, suggesting that the high level of freestream turbulence diminishes the control-authority of the applied forcing.

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