Recent advances in applying deep reinforcement learning for flow control: Perspectives and future directions
Deep reinforcement learning (DRL) has been applied to a variety of problems during the
past decade and has provided effective control strategies in high-dimensional and non …
past decade and has provided effective control strategies in high-dimensional and non …
Flow control in wings and discovery of novel approaches via deep reinforcement learning
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 …
efficiency of wings. We first discuss active methods to control turbulence, starting with flat …
Deep reinforcement learning for turbulent drag reduction in channel flows
We introduce a reinforcement learning (RL) environment to design and benchmark control
strategies aimed at reducing drag in turbulent fluid flows enclosed in a channel. The …
strategies aimed at reducing drag in turbulent fluid flows enclosed in a channel. The …
A theoretical decomposition of mean skin friction generation into physical phenomena across the boundary layer
A theoretical decomposition of mean skin friction generation into physical phenomena
across the whole profile of the incompressible zero-pressure-gradient smooth-flat-plate …
across the whole profile of the incompressible zero-pressure-gradient smooth-flat-plate …
Contributions of different scales of turbulent motions to the mean wall-shear stress in open channel flows at low-to-moderate Reynolds numbers
Smooth-walled open channel flow datasets, covering both the direct numerical simulation
and experimental measurements with a friction Reynolds number wavelength ranges are …
and experimental measurements with a friction Reynolds number wavelength ranges are …
Global effect of local skin friction drag reduction in spatially developing turbulent boundary layer
A Stroh, Y Hasegawa, P Schlatter… - Journal of Fluid …, 2016 - cambridge.org
A numerical investigation of two locally applied drag-reducing control schemes is carried out
in the configuration of a spatially developing turbulent boundary layer (TBL). One control is …
in the configuration of a spatially developing turbulent boundary layer (TBL). One control is …
Skin-friction reduction using periodic blowing through streamwise slits
XQ Cheng, ZX Qiao, X Zhang, M Quadrio… - Journal of Fluid …, 2021 - cambridge.org
Active skin-friction reduction in a turbulent boundary layer (TBL) is experimentally studied
based on time-periodic blowing through one array of streamwise slits. The control …
based on time-periodic blowing through one array of streamwise slits. The control …
Optimisation and analysis of streamwise-varying wall-normal blowing in a turbulent boundary layer
Skin-friction drag is a major engineering concern, with wide-ranging consequences across
many industries. Active flow-control techniques targeted at minimising skin friction have the …
many industries. Active flow-control techniques targeted at minimising skin friction have the …
Uniform blowing and suction applied to nonuniform adverse-pressure-gradient wing boundary layers
A detailed analysis of the effects of uniform blowing, uniform suction, and body-force
damping on the turbulent boundary layer developing around a NACA4412 airfoil at …
damping on the turbulent boundary layer developing around a NACA4412 airfoil at …
[HTML][HTML] A new perspective on skin-friction contributions in adverse-pressure-gradient turbulent boundary layers
For adverse-pressure-gradient turbulent boundary layers, the study of integral skin-friction
contributions still poses significant challenges. Beyond questions related to the integration …
contributions still poses significant challenges. Beyond questions related to the integration …