Spectral Early-Warning Signals for Sudden Changes in Time-Dependent Flow Patterns

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

Standard

Spectral Early-Warning Signals for Sudden Changes in Time-Dependent Flow Patterns. / Ndour, Moussa; Padberg-Gehle, Kathrin; Rasmussen, Martin.
in: Fluids, Jahrgang 6, Nr. 2, 49, 02.2021.

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

Harvard

APA

Vancouver

Ndour M, Padberg-Gehle K, Rasmussen M. Spectral Early-Warning Signals for Sudden Changes in Time-Dependent Flow Patterns. Fluids. 2021 Feb;6(2):49. doi: 10.3390/fluids6020049

Bibtex

@article{33234d53e902442282d8c626fd96cefa,
title = "Spectral Early-Warning Signals for Sudden Changes in Time-Dependent Flow Patterns",
abstract = "Lagrangian coherent sets are known to crucially determine transport and mixing processes in non-autonomous flows. Prominent examples include vortices and jets in geophysical fluid flows. Coherent sets can be identified computationally by a probabilistic transfer-operator-based approach within a set-oriented numerical framework. Here, we study sudden changes in flow patterns that correspond to bifurcations of coherent sets. Significant changes in the spectral properties of a numerical transfer operator are heuristically related to critical events in the phase space of a time-dependent system. The transfer operator approach is applied to different example systems of increasing complexity. In particular, we study the 2002 splitting event of the Antarctic polar vortex.",
keywords = "Lagrangian transport, bifurcation, coherent set, probabilistic approach, singular value decomposition, transfer operator, Mathematics",
author = "Moussa Ndour and Kathrin Padberg-Gehle and Martin Rasmussen",
note = "Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",
year = "2021",
month = feb,
doi = "10.3390/fluids6020049",
language = "English",
volume = "6",
journal = "Fluids",
issn = "2311-5521",
publisher = "MDPI AG",
number = "2",

}

RIS

TY - JOUR

T1 - Spectral Early-Warning Signals for Sudden Changes in Time-Dependent Flow Patterns

AU - Ndour, Moussa

AU - Padberg-Gehle, Kathrin

AU - Rasmussen, Martin

N1 - Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

PY - 2021/2

Y1 - 2021/2

N2 - Lagrangian coherent sets are known to crucially determine transport and mixing processes in non-autonomous flows. Prominent examples include vortices and jets in geophysical fluid flows. Coherent sets can be identified computationally by a probabilistic transfer-operator-based approach within a set-oriented numerical framework. Here, we study sudden changes in flow patterns that correspond to bifurcations of coherent sets. Significant changes in the spectral properties of a numerical transfer operator are heuristically related to critical events in the phase space of a time-dependent system. The transfer operator approach is applied to different example systems of increasing complexity. In particular, we study the 2002 splitting event of the Antarctic polar vortex.

AB - Lagrangian coherent sets are known to crucially determine transport and mixing processes in non-autonomous flows. Prominent examples include vortices and jets in geophysical fluid flows. Coherent sets can be identified computationally by a probabilistic transfer-operator-based approach within a set-oriented numerical framework. Here, we study sudden changes in flow patterns that correspond to bifurcations of coherent sets. Significant changes in the spectral properties of a numerical transfer operator are heuristically related to critical events in the phase space of a time-dependent system. The transfer operator approach is applied to different example systems of increasing complexity. In particular, we study the 2002 splitting event of the Antarctic polar vortex.

KW - Lagrangian transport

KW - bifurcation

KW - coherent set

KW - probabilistic approach

KW - singular value decomposition

KW - transfer operator

KW - Mathematics

UR - http://www.scopus.com/inward/record.url?scp=85104399176&partnerID=8YFLogxK

U2 - 10.3390/fluids6020049

DO - 10.3390/fluids6020049

M3 - Journal articles

VL - 6

JO - Fluids

JF - Fluids

SN - 2311-5521

IS - 2

M1 - 49

ER -

DOI

Zuletzt angesehen

Publikationen

  1. Learning Analytics
  2. Dynamic material flow analysis in the life cycle assessment tool chain
  3. Crises at Work: Potentials for Change?
  4. Atlas mit CD-ROM
  5. Developmentalities and donor-NGO relations
  6. Introduction
  7. Extension of SEIR compartmental models for constructive Lyapunov control of COVID-19 and analysis in terms of practical stability
  8. An inquiry into the digitisation of border and migration management
  9. Grüne Parteien
  10. Trust in scientists, risk perception, conspiratorial beliefs, and unrealistic optimism
  11. Heterogenous activation of dynamic recrystallization and twinning during friction stir processing of a Cu-4Nb alloy
  12. On-Board-Diagnose und On-Board-Measurement
  13. AUC Maximizing Support Vector Learning
  14. Fast, curvature-based prediction of rolling forces for porous media based on a series of detailed simulations
  15. Can a Revision of the Universal Service Scope Result in Substantive Change?
  16. Introduction to the U.S. Foreign Corrupt Practices Act in German
  17. On-board pneumatic pressure generation methods for soft robotics applications
  18. Series foreword of Series Editors
  19. Group formation in computer-supported collaborative learning
  20. Modulation After Control
  21. Development of a robust classifier of freshwater residence in barramundi (Lates calcarifer) life histories using elemental ratios in scales and boosted regression trees
  22. Extrusion Benchmark 2009 – A Step Ahead in Virtual Process Optimization
  23. Comparison of Supervised versus Self-Administered Stretching on Bench Press Maximal Strength and Force Development