Issue: Volume: 23 Issue: 2 (Feb 2000)

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A new system developed at Delph University of Technology helps researchers explore the evolution of important events in fluid-flow simulations--such as the birth and death of a given feature--by presenting two different representations of the data over time. A 3D viewer (top) shows where an isolated event took place (red objects) and where it is most likely to occur next (blue objects). The event graph (bottom) uses a red line to trace the frame-by-frame evolution of the feature depicted above. It also shows other predefined features as blue nodes and tracks their evolution with blue lines.

In the final event graph after feature tracking and event detection, small icons indicate different events, such as birth/death and split/merge.

One frame of a CFD visualization of a flow past a tapered cylinder shows areas of turbulence that evolve over time behind the cylinder.

Highly vortical structures are evident in this frame of a CFD visualization.