Closed-loop turbulence control: Progress and challenges
SL Brunton, BR Noack - Applied Mechanics …, 2015 - asmedigitalcollection.asme.org
Closed-loop turbulence control is a critical enabler of aerodynamic drag reduction, lift
increase, mixing enhancement, and noise reduction. Current and future applications have …
increase, mixing enhancement, and noise reduction. Current and future applications have …
Adaptive and model-based control theory applied to convectively unstable flows
N Fabbiane, O Semeraro… - Applied …, 2014 - asmedigitalcollection.asme.org
Research on active control for the delay of laminar–turbulent transition in boundary layers
has made a significant progress in the last two decades, but the employed strategies have …
has made a significant progress in the last two decades, but the employed strategies have …
Resolvent-based optimal estimation of transitional and turbulent flows
We extend the resolvent-based estimation approach recently introduced by Towne etal.(J.
Fluid Mech., vol. 883, 2020, A17) to obtain optimal, non-causal estimates of time-varying …
Fluid Mech., vol. 883, 2020, A17) to obtain optimal, non-causal estimates of time-varying …
Active control of transonic buffet flow
Transonic buffet is a phenomenon of aerodynamic instability with shock wave motions which
occurs at certain combinations of Mach number and mean angle of attack, and which limits …
occurs at certain combinations of Mach number and mean angle of attack, and which limits …
Closed-loop control of a free shear flow: a framework using the parabolized stability equations
In this study the parabolized stability equations (PSE) are used to build reduced-order-
models (ROMs) given in terms of frequency and time-domain transfer functions (TFs) for …
models (ROMs) given in terms of frequency and time-domain transfer functions (TFs) for …
On the role of adaptivity for robust laminar flow control
N Fabbiane, B Simon, F Fischer… - Journal of Fluid …, 2015 - cambridge.org
In boundary-layer flows, one may reduce skin-friction drag by delaying the onset of laminar-
to-turbulent transition via the attenuation of small-amplitude Tollmien–Schlichting (TS) …
to-turbulent transition via the attenuation of small-amplitude Tollmien–Schlichting (TS) …
Nonlinear optimal suppression of vortex shedding from a circular cylinder
X Mao, HM Blackburn, SJ Sherwin - Journal of Fluid Mechanics, 2015 - cambridge.org
This study is focused on two-and three-dimensional incompressible flow past a circular
cylinder for Reynolds number, accompanied by 70% drag reduction when a nonlinear …
cylinder for Reynolds number, accompanied by 70% drag reduction when a nonlinear …
A realizable data-driven approach to delay bypass transition with control theory
The current work presents a realizable method to control streaky disturbances in boundary
layer flows and delay transition to turbulence by means of active flow control. Numerical …
layer flows and delay transition to turbulence by means of active flow control. Numerical …
On the wave-cancelling nature of boundary layer flow control
This work deals with the feedforward active control of Tollmien–Schlichting instability waves
over incompressible 2D and 3D boundary layers. Through an extensive numerical study …
over incompressible 2D and 3D boundary layers. Through an extensive numerical study …
On the role of actuation for the control of streaky structures in boundary layers
This work deals with the closed-loop control of streaky structures induced by free-stream
turbulence (FST), at the levels of 3.0% and 3.5%, in a zero-pressure-gradient transitional …
turbulence (FST), at the levels of 3.0% and 3.5%, in a zero-pressure-gradient transitional …