Flow control in wings and discovery of novel approaches via deep reinforcement learning

R Vinuesa, O Lehmkuhl, A Lozano-Durán, J Rabault - Fluids, 2022 - mdpi.com
In this review, we summarize existing trends of flow control used to improve the aerodynamic
efficiency of wings. We first discuss active methods to control turbulence, starting with flat …

Stabilizing the square cylinder wake using deep reinforcement learning for different jet locations

L Yan, Y Li, G Hu, W Chen, W Zhong, BR Noack - Physics of Fluids, 2023 - pubs.aip.org
We mitigate the drag and lift forces of a square cylinder at three Reynolds numbers of 500,
1000, and 2000 using deep reinforcement learning (DRL) and two different positions of a …

Comparison between synthetic jets and continuous jets for active flow control: application on a NACA 0015 and a compressor stator cascade

MG De Giorgi, CG De Luca, A Ficarella… - Aerospace Science and …, 2015 - Elsevier
A numerical investigation is performed to analyse the suppression of the boundary layer
separation first on a NACA 0015 airfoil and subsequently in a highly loaded subsonic …

Investigation of the boundary layer characteristics for assessing the DBD plasma actuator control of the separated flow at low Reynolds numbers

E Pescini, F Marra, MG De Giorgi, L Francioso… - … Thermal and Fluid …, 2017 - Elsevier
The present study intends to investigate the boundary layer characteristics to assess the
potentiality of the single dielectric barrier discharge plasma actuators (SDBDPAs) to reattach …

Application of active flow control on aircrafts-State of the art

A Batikh, L Baldas, S Colin - International Workshop on Aircraft System …, 2017 - hal.science
This paper reviews and highlights the current state of the art on active flow control applied to
civil aircrafts. A brief introduction presents the flow control research field and the technology …

Role of phase-difference between two adjacent rectangular synthetic jet actuators in active control of flow over a rounded ramp

E Asgari, M Tadjfar - Physics of Fluids, 2022 - pubs.aip.org
In the current study, the role of phase-difference between signals of two adjacent synthetic
jet actuators (SJAs) in active control of flow over a rounded ramp geometry has been …

Lift augmentation potential of the circulation control wing driven by sweeping jets

Z Li, Y Liu, W Zhou, S Wang, X Wen, Y Liu - AIAA Journal, 2022 - arc.aiaa.org
Circulation control (CC) is an airfoil lift augmentation technique that replaces mechanical
structures by means of aerodynamic flaps generated by high-speed jets. In view of the high …

Flow separation control on a compressor-stator cascade using plasma actuators and synthetic and continuous jets

S Traficante, MG De Giorgi… - Journal of Aerospace …, 2016 - ascelibrary.org
The effects of active separation control on a highly loaded subsonic compressor stator
cascade were numerically studied by comparing the behavior of different devices …

On the classification of dielectric barrier discharge plasma actuators: A comprehensive performance evaluation study

J Kriegseis, A Duchmann, C Tropea… - Journal of Applied …, 2013 - pubs.aip.org
The increasing popularity and maturity of plasma actuators for many flow control
applications requires a common standard for plasma actuator performance evaluation. In the …

Towards the noise reduction of piezoelectrical-driven synthetic jet actuators

M Jabbal, J Jeyalingam - Sensors and Actuators A: Physical, 2017 - Elsevier
This work details an experimental investigation aimed at reducing the noise output of
piezoelectrical-driven synthetic jet actuators while minimising peak jet velocity reduction …