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Issue No. 01 - January/February (2010 vol. 16)
ISSN: 1077-2626
pp: 147-160
Florian Hecht , Georgia Institute of Technology, Atlanta
Peter J. Mucha , University of North Carolina at Chapel Hill, Chapel Hill
Greg Turk , Georgia Institute of Technology, Atlanta
We present a visualization technique for simulated fluid dynamics data that visualizes the gradient of the velocity field in an intuitive way. Our work is inspired by rheoscopic particles, which are small, flat particles that, when suspended in fluid, align themselves with the shear of the flow. We adopt the physical principles of real rheoscopic particles and apply them, in model form, to 3D velocity fields. By simulating the behavior and reflectance of these particles, we are able to render 3D simulations in a way that gives insight into the dynamics of the system. The results can be rendered in real time, allowing the user to inspect the simulation from all perspectives. We achieve this by a combination of precomputations and fast ray tracing on the GPU. We demonstrate our method on several different simulations, showing their complex dynamics in the process.
Rheoscopic fluid, flow visualization, tensor field visualization, ellipsoidal particle dynamics.

P. J. Mucha, G. Turk and F. Hecht, "Virtual Rheoscopic Fluids," in IEEE Transactions on Visualization & Computer Graphics, vol. 16, no. , pp. 147-160, 2009.
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