Relationships between small-scale fluid motions and inertial particle clustering in turbulence

Yoshiki Sakurai, Takashi Ishihara

Research output: Contribution to journalArticle

Abstract

To quantitatively study the relationships between small-scale fluid motions and inertial particle clustering in turbulence, we track inertial particles in a turbulent flow through a direct numerical simulation of the forced incompressible Navier–Stokes equations. Further, we investigate the particle distribution in the eigenframe of the rate-of-strain tensor of the turbulent velocity field. The unconditional averages of the particle densities in the eigenframe demonstrate that the particle distribution exhibits specific patterns. In addition, the conditional averages in high-vorticity regions show that a strong vortex anisotropically generates low- and high-number-density regions depending on particle inertia.

Original languageEnglish
Pages (from-to)934011-934014
Number of pages4
JournalJournal of the Physical Society of Japan
Volume87
Issue number9
DOIs
Publication statusPublished - Jan 1 2018

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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