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On the Elusive Concept of Lagrangian Coherent Structures
Zuse Institute Berlin.
Zuse Institue Berlin.ORCID iD: 0000-0001-7285-0483
Zuse Institute Berlin.
2012 (English)In: Topological Methods in Data Analysis and Visualization: Theory, Algorithms, and Applications / [ed] Ronald Peikert, Helwig Hauser, Hamish Carr, Raphael Fuchs, Springer, 2012, 207-220 p.Chapter in book (Refereed)
Abstract [en]

Many of the recently developed methods for analysis and visualization of time-dependent flows are related to concepts, which can be subsumed under the term Lagrangian coherent structures (LCS). Thereby, no universal definition of LCS exists and different interpretations are used. Mostly, LCS are considered to be features linked to pathlines leading to the ideal conception of features building material lines. Such time-dependent features are extracted by averaging local properties of particles along their trajectories, e.g., separation, acceleration or unsteadiness. A popular realization of LCS is the finite-time Lyapunov exponent (FTLE) with its different implementations. The goal of this paper is to stimulate a discussion on the generality of the underlying assumptions and concepts. Using a few well-known datasets, the interpretation and usability of Lagrangian analysis methods are discussed.

Place, publisher, year, edition, pages
Springer, 2012. 207-220 p.
Series
Mathematics and Visualization, ISSN 1612-3786
Keyword [en]
toplogy, flow visualization
National Category
Computer Vision and Robotics (Autonomous Systems)
Identifiers
URN: urn:nbn:se:liu:diva-127668DOI: 10.1007/978-3-642-23175-9ISBN: 978-3-642-23175-9 (print)ISBN: 978-3-642-23174-2 (print)OAI: oai:DiVA.org:liu-127668DiVA: diva2:926359
Available from: 2016-05-06 Created: 2016-05-06 Last updated: 2016-05-11

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CiteExportLink to record
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Citation style
  • apa
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  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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Output format
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  • asciidoc
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