Direct numerical simulation of interacting inertial particles in homogeneous isotropic turbulence

R. Onishi, J. C. Vassilicos, K. Takahashi

Research output: Contribution to journalConference articlepeer-review


This study has developed an efficient parallel simulation code for interacting inertial particles in homogeneous isotropic turbulence. Flow is computed with a fourth-order finite-difference method and particles are tracked with the Lagrangian method. The code adopts an MPI library for a d istributed-memory parallelization and is designed to minimize the MPI communication, which leads to a high parallel performance. The code has been run to obtain collision statistics of a monodisperse system with St =0.4 particles, where St is the Stokes number representing the particle relaxation time relative to the Kolmogorov time. The attained Taylor-microscale based Reynolds number R? ranges from 50 to over 500. This wide range of R? has potential to reveal a Reynolds dependency of collision statistics.

Original languageEnglish
Pages (from-to)1472-1475
Number of pages4
JournalProceedings of the International Symposium on Turbulence, Heat and Mass Transfer
Publication statusPublished - 2012
Externally publishedYes
Event7th International Symposium On Turbulence, Heat and Mass Transfer, THMT 2012 - Palermo, Italy
Duration: 2012 Sept 242012 Sept 27

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes


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