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Vortex merge graphs in two-dimensional unsteady flow fields
Zuse Institute Berlin, Germany.
Zuse Institute Berlin, Germany.ORCID iD: 0000-0001-7285-0483
Zuse Institute Berlin, Germany.
Zuse Institute Berlin, Germany.
2012 (English)Conference paper (Refereed)
Abstract [en]

Among the various existing vortex definitions, there is one class that relies on extremal structures of derived scalar fields. These are, e.g., vorticity,λ<sub>2</sub>, or the acceleration magnitude. This paper proposes a method to identify and track extremal-based vortex structures in 2D time-dependent flows. It is based on combinatorial scalar field topology. In contrast to previous methods, merge events are explicitly handled and represented in the resulting graph. An abstract representation of this vortex merge graph serves as basis for the comparison of the different scalar identifiers. The method is applied to numerically simulated flows of a mixing layer and a planar jet.

Place, publisher, year, edition, pages
2012. 1-5 p.
Keyword [en]
flow visualization
National Category
Computer Vision and Robotics (Autonomous Systems)
Identifiers
URN: urn:nbn:se:liu:diva-127665DOI: 10.2312/PE/EuroVisShort/EuroVisShort2012/001-005OAI: oai:DiVA.org:liu-127665DiVA: diva2:926356
Conference
Eurographics Conference on Visualization
Note

Best Short Paper Award

Available from: 2016-05-06 Created: 2016-05-06 Last updated: 2016-05-12

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ReferencesLink to record
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