Title: Two-dimensional vortex simulation of particulate airflow induced by free falling particles

Authors: Tomomi Uchiyama, Masaaki Naruse

Addresses: EcoTopia Science Institute, Nagoya University, Nagoya 464-8603, Japan. ' EcoTopia Science Institute, Nagoya University, Nagoya 464-8603, Japan

Abstract: This paper is concerned with the numerical simulation for a particulate air flow induced by free falling solid particles. The particles are stationed within a rectangular region at the commencement of the fall. They are made to fall in an air, and the air flow induced by the falling particles as well as the particle motion is simulated. The simulation highlights that the falling particles induce large scale eddies and that the eddies convect with involving the particles when the particle volume fraction is high. It also reveals that the strength of large-scale eddy becomes lower with increasing the aspect ratio of the particle ensemble.

Keywords: multiphase flow; vortex method; particulate flow; microburst; large-scale eddies; vortex simulation; air flow; free falling solid particles; particle motion.

DOI: 10.1504/IJESMS.2008.018847

International Journal of Engineering Systems Modelling and Simulation, 2008 Vol.1 No.1, pp.30 - 38

Published online: 19 Jun 2008 *

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