Turbulence unsteadiness drives extreme clustering

• Published in: arXiv.org
• Main Authors: Zapata, Florencia, Angriman, Sofía, Ferran, Amélie, Cobelli, Pablo J, Obligado, Martin, Mininni, Pablo D
• Format: Paper
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 22.02.2024
• Subjects: Clustering; Correlation; Direct numerical simulation; Energy dissipation; Extreme values; Fluid dynamics; Fluid flow; Reynolds number; Turbulence effects; Turbulent flow

We show that the unsteadiness of turbulence has a drastic effect on turbulence parameters and in particle cluster formation. To this end we use direct numerical simulations of particle laden flows with a steady forcing that generates an unsteady large-scale flow. Particle clustering correlates with...