Author(s)

H. Hirano & H. Ozoe

Abstract

Numerical computation of particle deposition onto a cone in a circular tube H. Hirano & H. Ozoe Institute of Advanced Material Study, Kyushu University, 6-1, Kasuga-Koen, Kasuga, Fukuoka/816 Japan ABSTRACT For a particle with a diameter from 0.05 //m to 10 //m, the particle trajectory around a cone in a circular tube was numerically calculated considering the Brownian motion. The calculation was carried out for both the isothermal ( Re = 100, Gr = 0 ) and nonisothermal ( Re = 100, Gr = 10* ) systems for Pr = 0.71, and the electrostatic force between the inclined plane of a cone and a particle was also considered. The computed result suggests that when the inclined plane of a cone is heated, natural convection works for keeping a particle away from this inclined plane. INTRODUCTION The analysis of the motion of a fine particle is very crucial for the vast fields from the clean room technology as employed in a semiconductor industry to the electric

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