Feature detection from vector quantities in a numerically simulated hypersonic flow field in combination with experimental flow visualization

  • Authors:
  • Hans-Georg Pagendarm;Birgit Walter

  • Affiliations:
  • DLR, German Aerospace Research Establishment, Göttingen, German;DLR, German Aerospace Research Establishment, Göttingen, German

  • Venue:
  • VIS '94 Proceedings of the conference on Visualization '94
  • Year:
  • 1994

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Visualization

Abstract

In computational fluid dynamics visualization is a frequently used tool for data evaluation, understanding of flow characteristics, and qualitative comparison to flow visualizations originating from experiments. Building on an existing visualization software system, that allows for a careful selection of state-of-the-art visualization techniques and some extensions, it became possible to present various features of the data in a single image. The visualizations show vortex position and rotation as well as skin-friction lines, experimental oil-flow traces, and shock-wave positions. By adding experimental flow visualization, a comparison between numerical simulation and wind-tunnel flow becomes possible up to a high level of detail. Since some of the underlying algorithms are not yet described in detail in the visualization literature, some experiences gained from the implementation are illustrated.