Quasi-objective eddy visualization from sparse drifter data

AP Encinas-Bartos, NO Aksamit… - Chaos: An Interdisciplinary …, 2022 - pubs.aip.org
We employ a recently developed single-trajectory Lagrangian diagnostic tool, the trajectory
rotation average (TRA)⁠, to visualize oceanic vortices (or eddies) from sparse drifter data …

Topology of dynamical reconstructions from Lagrangian data

GD Charó, G Artana, D Sciamarella - Physica D: Nonlinear Phenomena, 2020 - Elsevier
Abstract Branched Manifold Analysis through Homologies (BraMAH) is a technique that
computes the state-space topology of a dynamical reconstruction from scalar data. This work …

Topological colouring of fluid particles unravels finite-time coherent sets

GD Charó, G Artana, D Sciamarella - Journal of Fluid Mechanics, 2021 - cambridge.org
This work describes the application of a technique that extracts branched manifolds from
time series to study numerically generated fluid particle behaviour in the wake past a …

Evolutionary clustering of Lagrangian trajectories in turbulent Rayleigh–Bénard convection flows

C Schneide, PP Vieweg, J Schumacher… - … Journal of Nonlinear …, 2022 - pubs.aip.org
We explore the transport mechanisms of heat in two-and three-dimensional turbulent
convection flows by means of the long-term evolution of Lagrangian coherent sets. They are …

[PDF][PDF] An open-source shake-the-box method and its performance evaluation

S Tan, A Salibindla… - … on particle image …, 2019 - athene-forschung.unibw.de
An open-source Shake-the-Box (STB) was developed to benefit both the PIV and PTV
communities by establishing a platform for algorithm development and uncertainty analysis …

Lagrangian heat transport in turbulent three-dimensional convection

PP Vieweg, C Schneide, K Padberg-Gehle… - Physical Review …, 2021 - APS
Spatial regions that do not mix effectively with their surroundings and, thus, contribute less to
the heat transport in fully turbulent three-dimensional Rayleigh-Bénard flows are identified …

Finite-horizon, energy-efficient trajectories in unsteady flows

K Krishna, Z Song, SL Brunton - Proceedings of the …, 2022 - royalsocietypublishing.org
Intelligent mobile sensors, such as uninhabited aerial or underwater vehicles, are becoming
prevalent in environmental sensing and monitoring applications. These active sensing …

Turbulent coherent structures and early life below the Kolmogorov scale

MS Krieger, S Sinai, MA Nowak - Nature communications, 2020 - nature.com
Major evolutionary transitions, including the emergence of life, likely occurred in aqueous
environments. While the role of water's chemistry in early life is well studied, the effects of …

A three dimensional Lagrangian analysis of the smoke plume from the 2019/2020 Australian wildfire event

J Curbelo, II Rypina - Journal of Geophysical Research …, 2023 - Wiley Online Library
During the 2019/2020 Australian bushfire season, intense wildfires generated a rising plume
with a record concentration of smoke in the lower stratosphere. Motivated by this event, we …

A complex network framework for studying particle-laden flows

K Shri Vignesh, S Tandon, P Kasthuri, RI Sujith - Physics of Fluids, 2022 - pubs.aip.org
Studying particle-laden flows is essential for understanding diverse physical processes such
as rain formation in clouds, pathogen transmission, and pollutant dispersal. This work …