Abstract
Recently, in chemical, metal and environmental industries, the equipments to separate and classify nano-size particles are required in order to nanomize material particles, collect microscopic particles and purify wastewater. The target of the present study is a new solid-liquid separator, which enables us to separate and classify nano-size particles, to cut down the water content ratio of disposed particles and to accomplish extremely high collection efficiency by using centrifugal force and differences in specific gravity. In this study, we developed a numerical method to simulate gas-liquid-solid three-phase flow, based on the MPS approach. We conducted some numerical tests with gas-liquid two-phase and gas-liquid-solid three-phase simulations. Those are dam break phenomenon with liquid single-phase and gas-liquid two-phase simulations and air-bubble engulfments phenomenon with gas-liquid-solid three-phase simulation. In the dam break simulations, two computational results indicated reasonable agreement with the experimental results. In the air-bubble engulfments simulation, our numerical method reproduced some interactions of the three phases that are difficult to be duplicated with the traditional grid methods. In our future works, we are planning to improve the present numerical method, and apply it to the actual particle separator.
