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 …

[图书][B] Machine learning control-taming nonlinear dynamics and turbulence

T Duriez, SL Brunton, BR Noack - 2017 - Springer
This book is an introduction to machine learning control (MLC), a surprisingly simple model-
free methodology to tame complex nonlinear systems. These systems are assumed to be …

Bluff body drag manipulation using pulsed jets and Coanda effect

D Barros, J Borée, BR Noack, A Spohn… - Journal of Fluid …, 2016 - cambridge.org
The impact of fluidic actuation on the wake and drag of a three-dimensional blunt body is
investigated experimentally. Jets blowing tangentially to the main flow force the wake with …

Drag reduction mechanisms of a car model at moderate yaw by bi-frequency forcing

R Li, J Borée, BR Noack, L Cordier, F Harambat - Physical Review Fluids, 2019 - APS
A bi-frequency open-loop control strategy aiming to combine both high-and low-frequency
forcing effects is used to experimentally reduce the drag of a simplified car model at a slight …

Unsteady Coanda effect and drag reduction for a turbulent wake

Y Haffner, J Borée, A Spohn… - Journal of Fluid …, 2020 - cambridge.org
We experimentally study the unsteady forcing of the turbulent wake of a three-dimensional
blunt body for drag reduction purposes. The forcing is provided by pulsed jets coupled to …

Comparison between fluidic oscillators and steady jets for separation control

C Otto, P Tewes, JC Little, R Woszidlo - AIAA Journal, 2019 - arc.aiaa.org
An experimental study was conducted to compare performance and efficiency between
fluidic oscillators and steady jets with respect to commonly used flow control coefficients for …

High-frequency forcing of a turbulent axisymmetric wake

AR Oxlade, JF Morrison, A Qubain… - Journal of Fluid …, 2015 - cambridge.org
A high-frequency periodic jet, issuing immediately below the point of separation, is used to
force the turbulent wake of a bluff axisymmetric body, its axis aligned with the free stream. It …

[图书][B] Essence of turbulence as a physical phenomenon

A Tsinober, J Tsinober, Jacobs - 2019 - Springer
The Essence of Turbulence as a Physical Phenomenon Page 1 Arkady Tsinober The Essence of
Turbulence as a Physical Phenomenon With Emphasis on Issues of Paradigmatic Nature …

Comparison of various fluidic oscillators for separation control on a wall-mounted hump

C Otto, P Tewes, JC Little, R Woszidlo - AIAA Scitech 2019 Forum, 2019 - arc.aiaa.org
Various fluidic oscillators were tested on a model of the NASA hump geometry in support of
the development of active flow control technology. Time-averaged pressure measurements …

Localized thermal perturbations for control of turbulent shear flows

J Little - AIAA Journal, 2019 - arc.aiaa.org
Thermal perturbations initiated by pulsed plasmas and lasers have demonstrated
impressive control authority in various high-speed turbulent shear flows, yet questions on …