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Interactive Visual Analysis of Time-dependent Flows: Physics- and Statistics-based Semantics

Armin Pobitzer

PHDTHESIS, Apr, 2012

Abstract

With the increasing use of numerical simulations in the fluid mechanics community in recent years flow visualization increasingly gains importance as an advanced analysis tool for the simulation output. Up to now, flow visualization has mainly focused on the extraction and visualization of structures that are defined by their semantic meaning. Examples for such structures are vortices or separation structures between different groups of particles that travel together. In order to deepen our understanding of structures linked to certain flow phenomena, e.g., how and why they appear, evolve, and finally are destroyed, also linking structures to semantic meaning that is not attributed to them by their very definition, is a highly promising research direction to pursue. In this thesis we provide several approaches on how to augment structures stemming from classical flow visualization techniques by additional semantic information originating from new methods based on physics and statistics. In particular, we target separation structures, the linking of structures with a local semantics to global flow phenomena, and minimal representation of particle dynamics in the context of path line attributes.

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BibTeX

@phdthesis{pobitzer12thesis,
  title = {Interactive Visual Analysis of Time-dependent Flows:
            Physics- and Statistics-based Semantics},
  author = {Armin Pobitzer},
  year = {2012},
  month = {Apr},
  abstract = {With the increasing use of numerical simulations in the fluid mechanics
 community in recent years flow visualization increasingly gains importance
 as an advanced analysis tool for the simulation output. Up to now, flow
 visualization has mainly focused on the extraction and visualization of structures
 that are defined by their semantic meaning. Examples for such structures
 are vortices or separation structures between different groups of particles that
 travel together.
 In order to deepen our understanding of structures linked to certain flow phenomena,
 e.g., how and why they appear, evolve, and finally are destroyed, also
 linking structures to semantic meaning that is not attributed to them by their
 very definition, is a highly promising research direction to pursue.
 In this thesis we provide several approaches on how to augment structures
 stemming from classical flow visualization techniques by additional semantic
 information originating from new methods based on physics and statistics. In
 particular, we target separation structures, the linking of structures with a local
 semantics to global flow phenomena, and minimal representation of particle
 dynamics in the context of path line attributes.},
  school = {Department of Informatics, University of Bergen, Norway},
  ISBN = {978-82-308-2063-6},
  url = {https://bora.uib.no/handle/1956/5856}, 



}






 Last Modified: Jean-Paul Balabanian, 2013-11-18