気流による室内の微粒子の運動

概要

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The movement of small particles, distributed uniformly in an unsteady flow in a square chamber having an inlet and an outlet, are simulated numerically. Particles are classified into three types according to their final state : exhaust type in which the particles are exhausted through the outlet, circulation type in which the particles circulate in the chamber and adhesion type in which the particles adhere to the wall of the chamber. The influences of the initial position of a particle, the particles adhere tot eh wall of the chamber. The influences of the initial position of a particle, the Reynolds number R and the dimension ratio N characterizing whether a particle is coarse or fine, on the ratios of the number of particles of each type to the total number of particles are examined. The number of particles of exhaust type has a maximum at a certain N. The particles of circulation type are finally gathered in a certain orbit. The particles of adhesion type adhere to the wall in the vicinity of the stagnation points.
一般社団法人日本機械学会の論文
1987-07-25