Numerical simulations of the distribution of magnetic and non-magnetic particles in MAGIC fluids

Y. Ido¹ - T. Inagaki¹ - N. Umehara²

¹ Department of Engineering Physics, Electronics and Mechanics, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Japan
² Department of Mechanical Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Japan

Abstract
Distribution and structure formation of magnetic and nonmagnetic particles in the MAGIC (MAGnetic Intelligent Compound) fluid are simulated by using a particle method. Effects of volume fractions of magnetic particles and nonmagnetic abrasive particles on their distribution is examined. The magnetic particles form chain-like clusters in the field direction in case of low volume fraction, while fibrous or wall-like structure appears in case of high volume fraction. The nonmagnetic particles are also rearranged in the field direction. The microstructures formed by the magnetic and nonmagnetic particles are analyzed statistically. Figs 12, Refs 7.