Intermittency suppression in turbulence via forced light particles
Fluid Dynamics
2026-01-30 v2
Abstract
We investigate how turbulence is reshaped by the presence of externally forced light particles, using high-resolution direct numerical simulations with four-way coupling. The particles are subject to an oscillatory force that in turn locally affects the fluid flow through momentum exchange at the position of the particles. Since the light particles preferentially concentrate in high vorticity regions, this leads to an intricate preferential turbulence modulation. We show that through this modulation, the forced light particles strongly reduce the intermittency of the flow, shedding new light on the delicate relationship between vortex filaments and turbulence intermittency.
Cite
@article{arxiv.2508.06660,
title = {Intermittency suppression in turbulence via forced light particles},
author = {André Freitas and Xander M. de Wit and Ziqi Wang and Luca Biferale and Federico Toschi},
journal= {arXiv preprint arXiv:2508.06660},
year = {2026}
}