Tuft Flow Visualization

W. Shen and A. Pang (USA)


arrow plots, hedgehogs,ribbons, streamlines, streaklines, surface flow, time varying, unsteady flow.


This paper describes a technique for visualizing surface flow information with the use of virtual tufts. In wind tunnel experiments, tufts are short strings attached to various locations of the foil, and observed during the experiment. Here, we model these tufts with polygon segments connected by springs. They change their ori entation and shape in direct relationship to the flow data being visualized. The color and length of the tufts can be altered to show other flow properties such as veloc ity magnitude, integration age, etc. We demonstrate how they are used with a synthetic data set and output from a computational fluid dynamics simulation.

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