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Related Experiment Video

Updated: Jun 3, 2026

An Atmospheric Pressure Plasma Setup to Investigate the Reactive Species Formation

An Atmospheric Pressure Plasma Setup to Investigate the Reactive Species Formation

Published on: November 3, 2016

Sensing and control of flow separation using plasma actuators.

Thomas C Corke¹, Patrick O Bowles, Chuan He

¹University of Notre Dame, Institute for Flow Physics and Control, Hessert Laboratory for Aerospace Research, Notre Dame, IN 46556, USA. tcorke@nd.edu

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences

|March 9, 2011

Summary

Plasma actuators can control airflow separation. A new method uses surface pressure sensors to detect imminent separation for effective flow control on airfoils.

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Last Updated: Jun 3, 2026

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Area of Science:

Fluid dynamics
Aerospace engineering
Plasma physics

Background:

Single dielectric barrier discharge plasma actuators are utilized for flow separation control.
Optimized pulsing frequencies of plasma actuators can induce coherent spanwise vortices, enhancing control effectiveness.

Purpose of the Study:

To demonstrate a novel flow separation indicator using surface pressure sensors.
To propose and validate a feedback control strategy for flow separation on airfoils.

Main Methods:

Utilizing spanwise-oriented asymmetric electrodes in plasma actuators.
Applying short-time spectral analysis of surface pressure sensor data.
Testing on an airfoil with increasing angle of attack and a sinusoidally pitching airfoil.

Main Results:

Surface pressure sensors can detect the onset of flow separation.
The proposed feedback control successfully managed flow separation on an airfoil.

Conclusions:

Plasma actuator pulsing can be sensed to indicate flow separation.
This sensing capability enables effective feedback control for aerodynamic applications.