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 …

Hierarchical deep learning of multiscale differential equation time-steppers

Y Liu, JN Kutz, SL Brunton - … Transactions of the Royal …, 2022 - royalsocietypublishing.org
Nonlinear differential equations rarely admit closed-form solutions, thus requiring numerical
time-stepping algorithms to approximate solutions. Further, many systems characterized by …

Reduced-order unsteady aerodynamic models at low Reynolds numbers

SL Brunton, CW Rowley, DR Williams - Journal of Fluid Mechanics, 2013 - cambridge.org
In this paper we develop reduced-order models for the unsteady lift on a pitching and
plunging aerofoil over a range of angles of attack. In particular, we analyse the pitching and …

Go with the FLOW: visualizing spatiotemporal dynamics in optical widefield calcium imaging

NJ Linden, DR Tabuena… - Journal of the …, 2021 - royalsocietypublishing.org
Widefield calcium imaging has recently emerged as a powerful experimental technique to
record coordinated large-scale brain activity. These measurements present a unique …

Finite-time Lyapunov exponents in the instantaneous limit and material transport

PJ Nolan, M Serra, SD Ross - Nonlinear Dynamics, 2020 - Springer
Lagrangian techniques, such as the finite-time Lyapunov exponent (FTLE) and hyperbolic
Lagrangian coherent structures, have become popular tools for analyzing unsteady fluid …

Near-wake dynamics of a vertical-axis turbine

B Strom, B Polagye, SL Brunton - Journal of Fluid Mechanics, 2022 - cambridge.org
Cross-flow, or vertical-axis, turbines are a promising technology for capturing kinetic energy
in wind or flowing water and their inherently unsteady fluid mechanics present unique …

Chaotic time series prediction based on multi-scale attention in a multi-agent environment

H Miao, W Zhu, Y Dan, N Yu - Chaos, Solitons & Fractals, 2024 - Elsevier
A new problem at the intersection of multi-agent systems, chaotic time series prediction, and
flow map learning is formulated in this paper. The problem involves agents collaborating to …

Introduction to vector field topology

T Günther, I Baeza Rojo - Topological Methods in Data Analysis and …, 2021 - Springer
Flow visualization is a research discipline that is concerned with the visual exploration and
analysis of vector fields. An important class of methods are the topology-based techniques …

A Lagrangian perspective towards studying entrainment

GA Rosi, DE Rival - Experiments in fluids, 2018 - Springer
This study presents a method for characterizing entrainment using Lagrangian data.
Specifically, the method exploits the temporal evolution of enstrophy along pathlines to …

Lagrangian coherent structure identification using a Voronoi tessellation-based networking algorithm

GA Rosi, AM Walker, DE Rival - Experiments in Fluids, 2015 - Springer
The quantification of Lagrangian coherent structures (LCS) has been investigated using an
algorithm based on the tesselation of unstructured data points. The applicability of the …