テーパドラム回転式固液分離機に関する基礎研究　回転円筒容器内に投入された固体粒子運動:—回転円筒容器内に投入された固体粒子運動—

概要

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A new type of solid-liquid separator, called Tapered Drum Rotating Separator, was proposed by the authors. This system has two operation modes; one is a separating mode and another a discharging one. As a fundamental study on the separating mode, the numerical simulation of the motion of a solid particle thrown into the rotating cylindrical container was carried out by the Runge-Kutta numerical integration method. In was clarified that, while at the beginning of the motion, the smaller the diameter of the particle becomes, the larger the radial deflection, because of its very quick tangential acceleration. After a certain duration, the larger the diameter of the particle becomes, the larger the radial deflection. Then there exists the minimum reaching time at the wall for each particle size and the drum diameter. The numerical simulations were also carried out for different density of particle and show same characteristics of motion as those of different sizes qualitatively. The numerical results were compared with the experimental one obtained by the flow visualization technique. The numerical value, for example, the reaching time at the wall agrees well with the experimental one, except for very small particle and low drum revolution.
日本混相流学会の論文