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 …

[کتاب][B] Data-driven fluid mechanics: combining first principles and machine learning

MA Mendez, A Ianiro, BR Noack, SL Brunton - 2023‏ - books.google.com
Data-driven methods have become an essential part of the methodological portfolio of fluid
dynamicists, motivating students and practitioners to gather practical knowledge from a …

The need for a pressure-term representation in empirical Galerkin models of incompressible shear flows

BR Noack, P Papas, PA Monkewitz - Journal of Fluid Mechanics, 2005‏ - cambridge.org
Low-dimensional empirical Galerkin models are developed for spatially evolving laminar
and transitional shear layers, based on a Karhunen–Loève decomposition of …

Vortex dynamics models in flow control problems

B Protas - Nonlinearity, 2008‏ - iopscience.iop.org
In this article we review the state of the art in the field of control of vortex dynamics. We focus
on problems governed by two-dimensional incompressible Euler equations in domains both …

Quantifying fluid mixing with the Shannon entropy

M Camesasca, M Kaufman… - … theory and simulations, 2006‏ - Wiley Online Library
We introduce a methodology to quantify the quality of mixing in various systems, including
polymeric ones, by adapting the Shannon information entropy. For illustrative purposes we …

Ecological implications of eddy retention in the open ocean: a Lagrangian approach

F d'Ovidio, S De Monte, A Della Penna… - Journal of Physics A …, 2013‏ - iopscience.iop.org
The repartition of tracers in the ocean's upper layer on the scale of a few tens of kilometres is
largely determined by the horizontal transport induced by surface currents. Here we …

Two-dimensional time-dependent vortex regions based on the acceleration magnitude

J Kasten, J Reininghaus, I Hotz… - IEEE Transactions on …, 2011‏ - ieeexplore.ieee.org
Acceleration is a fundamental quantity of flow fields that captures Galilean invariant
properties of particle motion. Considering the magnitude of this field, minima represent …

Linear feedback stabilization of laminar vortex shedding based on a point vortex model

B Protas - Physics of Fluids, 2004‏ - pubs.aip.org
In this paper we use the Föppl point vortex system as a reduced-order model for stabilization
of the steady symmetric solution in an unstable laminar wake. The downstream location of …

[HTML][HTML] Fast fluid heating by adaptive flow reorientation

R Lensvelt, MFM Speetjens, H Nijmeijer - International Journal of Thermal …, 2022‏ - Elsevier
Transport of scalar quantities such as eg heat or chemical species in laminar flows is key to
many industrial activities and stirring of the fluid by flow reorientation is a common way to …

Feasibility, efficiency and transportability of short-horizon optimal mixing protocols

L Cortelezzi, A Adrover, M Giona - Journal of Fluid Mechanics, 2008‏ - cambridge.org
We consider, as a case study, the optimization of mixing protocols for a two-dimensional,
piecewise steady, nonlinear flow, the sine flow, for both the advective–diffusive and purely …