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Isotropic Turbulence
Data Courtesy of: Diego A. Donzis, P.K. Yeung
Visualization by: Gregory P. Johnson, Kelly P. Gaither

Energy dissipation and vorticity represent, respectively, the intensity of stravining and rotation and are two important descriptors of small-scale motion. Their behavior and relation is very important in both fundamental studies of turbulence, as well as in modeling of combustion or dispersion problems. The figure shows that regions of intense vorticity (red iso-contours) and energy dissipation (blue/green volume rendering) occur in very organized structures. In particular, large vorticity tends to concentrate in long but thin tubes surrounded by large dissipation.