| dc.description.abstract | The behavior of the particle flow involves the interaction between the fine particles and the interstitial fluid. From the interaction of the interstitial fluid, the particles may be discharged when the flow is not smooth, and the particles are particularly dominated when the particles are less than 200 μm . Since the discharging flow rates and the bubble phenomenon are worth investigating with different size of the particles in silo, so this research means to investigate the discharging flow rate and the bubble maximal area of the different size of the particles.
Three different size of the powders were used in this research (90.5 μm、115.5 μm、165 μm). In this research, mass flow rate measured method , gauge pressure detected method and the bubble image observed method were used as the experimental analyzed method. Based on the results of this experiment, it can be understood that the powders with different particle size indeed affect the area of the air bubbles also the mass flow rate of the powders .That is to say：the larger powder size is, the higher mass flow rate will be, the larger powder size is, the smaller maximal area of the bubble is ; the smaller powder size is, the lower mass flow rate will be, the smaller powder size is , the larger maximal area of the bubble is.
Furthermore, this research also detects the values of pressure rising in the silo via the pressure detection software.
Keywords： silo、particle size、mass flow rate、bubble phenomenon | en_US |