回転流れ場における単一球粒子の数値シミュレーション : 球粒子に作用する揚力の評価 (<小特集>混相流の数値シミュレーションと新技術)

抄録

Particle trajectories in a typical rotating flow of liquid were calculated for a single-sphere with density lower than that of the liquid, the initial flow velocity being zero. A general form of momentum equation is employed, which consists of a buoyant force, a drag force, a lift force, an added-mass force, a pressure gradient force and a Basset history force. The effects of the lift force acting on the spherical particle were shown by the computation reqults of the particle trajectories. The calculated results of the dynamic equilibrium radius of the particle fit the experimental results.