[HTML][HTML] 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 …

The interactions of a circular synthetic jet with a turbulent crossflow

HH Ho, EE Essel, PE Sullivan - Physics of Fluids, 2022 - pubs.aip.org
The three-dimensional flow of a circular synthetic jet interacting with a turbulent crossflow is
investigated with unsteady Reynold-Averaged Navier–Stokes simulations. The effects of jet …

Experimental investigation of synthetic jet control of wing rock for a flying wing aircraft

QM Wang, LH Feng, X Li - Physics of Fluids, 2023 - pubs.aip.org
Flying wing aircraft easily experience wing rock due to the lack of lateral-directional stability,
which causes serious challenges to flight control and safety. Thus, it is necessary to reduce …

Boundary layer transition induced by low-speed synthetic jets

A Palumbo, O Semeraro, JC Robinet, L de Luca - Physics of Fluids, 2022 - pubs.aip.org
The effect of low-speed, circular synthetic jets (SJ) on the turbulent transition of a laminar
boundary layer is studied through direct numerical simulations. The SJ capability in fixating …

[HTML][HTML] Experimental and CFD characterization of a double-orifice synthetic jet actuator for flow control

A Palumbo, L de Luca - Actuators, 2021 - mdpi.com
The paper presents a joint experimental and numerical characterization of double-orifice
synthetic jet actuators for flow control. Hot-wire measurements of the flow field generated by …

Interaction of synthetic jets with a massively separated three-dimensional flow field

N Rathay, M Amitay - Physical Review Fluids, 2022 - APS
The interaction of an array of finite span synthetic jet actuators with a massively separated
flow was explored experimentally over a cantilevered, swept, and tapered model having a …

[PDF][PDF] Analysis of co-flow jet effects on airfoil at moderate Reynolds numbers

A Khoshnevis, S Yazdani… - Journal of Theoretical and …, 2020 - bibliotekanauki.pl
This paper investigates the performance of controlling Co-Flow Jet (CFJ) on NACA 0025
airfoil at five different Reynolds numbers of 5· 104, 7.5· 104, 105, 1.5· 105, and 3· 105. To …

Noise and Jet Momentum of Synthetic Jet Actuators with Different Orifice Configurations

N Arafa, P Sullivan, A Ekmekci - AIAA Journal, 2024 - arc.aiaa.org
Sound pressure levels and flow characteristics of a synthetic jet actuator (SJA) are
investigated experimentally using the following orifice configurations: a) a slender …

Experimental investigation on the impingement of synthetic jet vortex rings onto a porous wall

Y Xu, ZY Li, JJ Wang - Physics of Fluids, 2021 - pubs.aip.org
This paper presents an experimental study on the effects of the Reynolds number (Re sj=
300, 600, and 900) and porosity (ϕ= 20%–85%) on synthetic jet vortex rings impinging onto …

Evolving reordering algorithms using an ant colony hyperheuristic approach for accelerating the convergence of the ICCG method

SLG de Oliveira, LM Silva - Engineering with Computers, 2020 - Springer
This paper proposes a novel ant colony hyperheuristic approach for reordering the rows and
columns of symmetric positive definite matrices. This ant colony hyperheuristic approach …