Optimal actuator selection for airfoil separation control

Debraj Bhattacharjee, Maziar S. Hemati, Bjoern Klose, Gustaaf B. Jacobs

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Scopus citations


Many active flow control strategies have been developed to mitigate flow separation and improve aerodynamic performance. Most studies have focused on optimizing the control action for a given actuator configuration; however, actuator placement is intimately tied to achievable performance. In this paper, we formulate a systematic approach for determining the optimal actuator location for separation control from numerical and experimental fluids data for both stable and unstable systems. High-fidelity numerical fluids simulations have been performed to compute the lift and separation-angle responses to a pulse of localized body-force actuation applied at six distinct locations on the upper surface of the airfoil. These pulse response data are then used to determine the actuator location among the set that can drive the system output to an arbitrary value with the minimum amount of input energy. The results of this study indicate that the optimal actuator locations for controlling lift and separation angle are not identical.

Original languageEnglish (US)
Title of host publication2018 Flow Control Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105548
StatePublished - 2018
Event9th AIAA Flow Control Conference, 2018 - [state] GA, United States
Duration: Jun 25 2018Jun 29 2018

Publication series

Name2018 Flow Control Conference


Other9th AIAA Flow Control Conference, 2018
Country/TerritoryUnited States
City[state] GA

Bibliographical note

Funding Information:
This material is based upon work supported by the Air Force Office of Scientific Research under awards FA9550-16-1-0392 and FA9550-17-1-0252, monitored by Dr. Douglas R. Smith.

Publisher Copyright:
© 2018, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.


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