摘要
提出了物体在床层中所受作用力等于气体压力作用在其表面的合力Ｆｑｇ和颗粒碰撞压力作用在其表面的合力Ｆｐｐ之和这一受力理论，并通过实验得到了验证。而在初始流化状态下，Ｆｐｐ＝０，此时物体只受Ｆｐｇ作用，物体的受力符合阿基米德原理。
It is proposed and verified in experiments that the force on the object in a fluidized bed equals the sum of the force Fpg imparted by the gas pressure distribution on it and the force Fpp caused by the impact pressure distribution on it. At minimum fluidization, Fpp=0. thus only Fpg acts on the object. In this situation, experimental results show that the force on the object agrees well with the Archimedes' principle.
基金
成都科技大学青年科学基金
关键词
悬浮物体
流化床反应器
气体
固体
悬浮物
gas-solid mixtures. fluidized beds. floating objects, forces on objects. pressure distribution
