【摘要】 <正> 一、前言 气-固两相流是多相流研究中活跃的领域之一。煤粉燃烧,喷雾燃烧,喷雾冷却,流化床燃烧等等,都与固体颗粒或液滴的湍流弥散有密切的关系。颗粒的湍流弥散是指颗粒在流体湍流场中的迁移行为。Jeffrey和Pearson1965年发现Saffman力对固体颗粒的运更多还原

【Abstract】 The motion of coal particles in a two dimension plane jet was investigated by using the multipulse in-line holography and the influences of Saffman force, Magnus force, gravity and viscous drag on the particle motion were studied numerically. It was found that the initial velocity of particles controlled their dispersion in initial period.更多还原