[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 …

Model-free tracking control of complex dynamical trajectories with machine learning

ZM Zhai, M Moradi, LW Kong, B Glaz, M Haile… - Nature …, 2023 - nature.com
Nonlinear tracking control enabling a dynamical system to track a desired trajectory is
fundamental to robotics, serving a wide range of civil and defense applications. In control …

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 …

A numerical investigation of the asymmetric wake mode of a squareback Ahmed body–effect of a base cavity

JM Lucas, O Cadot, V Herbert, S Parpais… - Journal of Fluid …, 2017 - cambridge.org
Numerical simulations of the turbulent flow over the flat backed Ahmed model at Reynolds
number is obtained. It is accompanied by a large elongation of the recirculation inside the …

Unstable wake dynamics of rectangular flat-backed bluff bodies with inclination and ground proximity

G Bonnavion, O Cadot - Journal of Fluid Mechanics, 2018 - cambridge.org
The paper investigates experimentally the global wake dynamics of a simplified three-
dimensional ground vehicle at a Reynolds number of. The after-body has a blunt rectangular …

A study of wake effects on the drag of Ahmed׳ s squareback model at the industrial scale

M Grandemange, O Cadot, A Courbois… - Journal of Wind …, 2015 - Elsevier
Experiments are performed at industrial scales over the Ahmed geometry, ie at a Reynolds
number of Re= 2.5× 10 6 based on the height of the body. The shape of the squareback …

Active drag reduction of a high-drag Ahmed body based on steady blowing

BF Zhang, K Liu, Y Zhou, S To, JY Tu - Journal of Fluid Mechanics, 2018 - cambridge.org
Active drag reduction of an Ahmed body with a slant angle of, based on the square root of
the model cross-sectional area. Four individual actuations, produced by steady blowing, are …

Characteristics of flow past elongated bluff bodies with underbody gaps due to varying inflow turbulence

SS Aleyasin, MF Tachie, R Balachandar - Physics of Fluids, 2021 - pubs.aip.org
An experimental study was performed on two elongated bluff bodies with underbody gaps, a
square-back Ahmed body and a cuboid, to investigate the effects of geometry and the …

Recent advances in wake dynamics and active drag reduction of simple automotive bodies

Z Yu, Z Bingfu - Applied Mechanics Reviews, 2021 - asmedigitalcollection.asme.org
This is a compendium of recent progresses in the development of wake dynamics and active
drag reduction (DR) of three-dimensional (3D) simple automotive models, largely focused …

Optimization and sensitivity analysis of active drag reduction of a square-back Ahmed body using machine learning control

D Fan, B Zhang, Y Zhou, BR Noack - Physics of Fluids, 2020 - pubs.aip.org
A machine learning control (MLC) is proposed based on the explorative gradient method
(EGM) for the optimization and sensitivity analysis of actuation parameters. This technique is …