The Behavior of Diamagnetic Brownian Particles in the Presence of a Gradient Magnetic Field

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Hiroyuki Ozoe¹  Qiuwang Wang²  Hiroyuki Hirano³  Xian Wang¹  Toshio Tagawa¹ 

[1] Interdisciplinary Graduate School of Engineering Sciences, Kyushu University;School of Energy & Power Engineering, Xi’an Jiaotong University;Department of Applied Chemistry, Okayama University of Science

关键词: Carbon Particle;    Particle Size;    Magnetic Field;    Brownian Motion;    Langevin Equation;   

DOI  :  10.1252/jcej.38.24

来源: Maruzen Company Ltd

【 摘 要 】

References(20)Cited-By(1)The behavior of carbon particles was numerically studied for various sizes (0.01–5 μm) in the air on which a gradient magnetic field was imposed. One thousand particles were released randomly in one of the vertical cylindrical cross sections whose height is equal to its radius. An electric coil was placed coaxially at the bottom level of the enclosure to produce a magnetic field. The Brownian motion was taken into consideration and the Langevin equation was solved for the particle motion. The effect of the magnetic field on the particle movement increased with the particle size, but the Brownian motion decreased. For those particles with diameter d ≤ 1 μm, the Brownian motion was so strong that the magnetic and gravitational fields had almost no effects on the particle behavior. For the particles of d ≥ 1 μm, the Brownian motion could be ignored mostly, and the particles accumulated at the bottom or upper walls of the enclosure depending on the magnetic strength.

【 授权许可】

Unknown