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The visualization and the calculation of particle trajectory impinging on a flat plate are investigated by using Ar^+ laser, a camera and an equation of particle motion simplified by the terms of iner...tia force, drag, gravitational force and lift. The jet velocity was 6.9m/s and 15m/s. The spherical glass beads of 30, 58 and 100μm in diameter were used. The distance between the nozzle exit and the plate was ten times the nozzle diameter. The photographs of particle motion that trajectory show that one is the first-impingement and rebound, which depends on the momentum of particle; and the other is the second-impingement, which depends on the particle diameter and the entrainment velocity of environment air. The maximum rebound height of particle increases with the particle diameter. Magnus effect appears in the particle trajectory over -6000rad/s in angular velocity.続きを見る
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