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

Srikar Yadala, Nicolas Benard, Marios Kotsonis, Franck Kerherve, Eric Moreau

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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.

Original languageEnglish
Title of host publicationProceedings of the 11th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2019
Subtitle of host publication30/07/19 - 2/08/19 Southampton, United Kingdom
Number of pages6
Publication statusPublished - 2019
Event11th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2019 - Southampton, United Kingdom
Duration: 30 Jul 20192 Aug 2019

Conference

Conference11th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2019
CountryUnited Kingdom
CitySouthampton
Period30/07/192/08/19

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    Yadala, S., Benard, N., Kotsonis, M., Kerherve, F., & Moreau, E. (2019). Effect of DBD plasma actuators on vortical structures in a turbulent mixing layer. In Proceedings of the 11th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2019: 30/07/19 - 2/08/19 Southampton, United Kingdom