| A Predictor-Corrector Technique for Visualizing Unsteady Flow (1995) | |||||||||||||||||
Abstract | |||||||||||||||||
| We present a method for visualizing unsteady flow by displaying its vortices. The vortices are identified by using a vorticity-predictor pressure-corrector scheme that follows vortex cores. The cross-sections of a vortex at each point along the core can be represented by a Fourier series. A vortex can be faithfully reconstructed from the series as a simple quadrilateral mesh, or its reconstruction can be enhanced to indicate helical motion. The mesh can reduce the representation of the flow features by a factor of one thousand or more compared with the volumetric dataset. With this amount of reduction it is possible to implement an interactive system on a graphics workstation to permit a viewer to examine, in three dimensions, the evolution of the vortical structures in a complex, unsteady flow. *This research was supported by the National Aeronautics and Space Administration under NASA contract No. NAS119480 while the author was in residence at the Institute for Computer Applications ... | |||||||||||||||||
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