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Topological Features in Glyph-Based Corotation Visualization

  • Sohail Shafii
  • Harald Obermaier
  • Bernd Hamann
  • Kenneth I. Joy
Conference paper
Part of the Mathematics and Visualization book series (MATHVISUAL)

Abstract

This chapter introduces a novel method for vortex detection in flow fields based on the corotation of line segments and glyph rendering. The corotation measure is defined as a point-symmetric scalar function on a sphere, suitable for direct representation in the form of a three-dimensional glyph. Appropriate placement of these glyphs in the domain of a flow field makes it possible to depict vortical features present in the flow. We demonstrate how topological analysis of this novel glyph-based representation of vortex features can reveal vortex characteristics that lie beyond the capabilities of visualization techniques that consider vortex direction and magnitude information only.

Keywords

Vortex Core Topological Analysis Vortex Street Deviatoric Strain Velocity Gradient Tensor 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

This work was partially supported by the Materials Design Institute, funded by the UC Davis/LANL Research Collaboration (LANL Agreement No. 75782-001-09). It was also supported by the NSF under contracts IIS 0916289 and IIS 1018097, the Office of Advanced Scientific Computing Research, Office of Science, of the US DOE under Contract No. DE-FC02-06ER25780 through the SciDAC programs VACET, and contract DE-FC02-12ER26072, SDAV Institute. We thank Simon Stegmaier for making available his software [16].

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Sohail Shafii
    • 1
  • Harald Obermaier
    • 1
  • Bernd Hamann
    • 1
  • Kenneth I. Joy
    • 1
  1. 1.Department of Computer Science, Institute for Data Analysis and VisualizationUniversity of CaliforniaDavisUSA

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