Hideaki MIURA and Shigeo KIDA,
Theory and Computer Simulation Center,
National Institute for Fusion Science
The sectional-pressure-minimum-and-swirl method is introduced to identify and visualize vortical structures in numerical turbulence. It is shown that this method extracts complex behavior of vortices effectively. The mean value of radius of vortex cross-sections is about four times of the Kolmogorov length scale. [(Address) Oroshi 322-6, Toki, Gifu 509-5201, JAPAN. (Phone) +81-572-58-2561 (E-mail) miura@toki.theory.nifs.ac.jp]