二粒径からなる混合粒径粒子流の流動機構
1985 年 1985 巻 357 号 p. 25-34
詳細
1985 年 1985 巻 357 号 p. 25-34
In this study, the segregation and resistance law of the granular flow of mixed diameter particles are discussed from the viewpoint that the flow is the stochastic phenomena of the motion of each particle. As the results, we point out 1) the segregation occurs as percolation by the particles of the diameter dominating resistance law, and it is characterized by coefficient α on the arrangement of large particles percolating small particles and by drop-out probability P of small particles from its own layer, and 2) the resistance law is not equal, as the influence of mixing condition of different diameter particles on their moment are different, and by that, into 4 types velocity distributions are classified. In this manner, it is important that α and P are defined as stochastic quantity of the flow.
