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Updated: Jun 23, 2025

Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions
Published on: February 22, 2018
Heavy Particle Clustering in Inertial Subrange of High-Reynolds Number Turbulence
Keigo Matsuda1, Katsunori Yoshimatsu2, Kai Schneider3
1Research Institute for Value-Added-Information Generation (VAiG), <a href="https://ror.org/059qg2m13">Japan Agency for Marine-Earth Science and Technology (JAMSTEC)</a>, Yokohama 236-0001, Japan.
Abstract:
Direct numerical simulation of homogeneous isotropic turbulence shows pronounced clustering of inertial particles in the inertial subrange at high Reynolds number, in addition to the clustering typically observed in the near dissipation range. The clustering in the inertial subrange is characterized by the bump in the particle number density spectra and is due to modulation of preferential concentration. The number density spectrum can be modeled by a rational function of the scale-dependent Stokes number.
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