摘 要：用示踪颗粒法对细玻璃球在斜槽中的低速流动进行 了实验研究。结果发现‚颗粒的流动行为与斜槽表面特征密 切相关‚对光滑表面存在明显的壁面滑移‚而对粗糙壁面‚在 低速流情况下不存在滑移。实验测量了不同条件下的速度 分布和流层厚度‚并分析了斜槽倾角、流率及壁面状况对流 动的影响。 

关键词：颗粒；斜槽流；壁面滑移；速度分布

Abstract：T he flow of fine glass beads at low velocity in an in clined chute was investigated by means of tracer particles．T he behavior of the motion of granular materials depends strongly on the nature of the surface they flow over．For a smooth surface‚ there appears to be significant slip at the boundary．While in the case of a rough surface‚no slip was found at low velocity．Veloc ity profiles were measured experimentally under various condi tions‚and the effects on the flow of such factors as inclination of the chute‚flow rate and nature of the surface were evaluated． 

Keywords：granular materials；inclined chute；wall slip；velocity profile