Angular Velocity of Kolmogorov-Scale Fibers as Proxy for Turbulent Dissipation

Author(s): Domenico Zaza, Vlad Giurgiu, Michele Iovieno, and Alfredo Soldati We introduce a fiber-based method to directly measure turbulent energy dissipation. Combining original measurements of the full-body rotation—tumbling and spinning—of short, Kolmogorov-scale fibers in turbulent channel flow with direct numerical simulations using a point-fiber model, we show that th… [Phys. Rev. Lett. 136, 054001] Published Tue Feb 03, 2026