(78g) Experimental Investigation of Flow Behavior and Segregation for Nonspherical Particles in the Multi-Component Mixture through a Fluidized Bed Solids Mixer.

This study aims to investigate the flow behavior of spherical and nonspherical particles in the gas-solid fluidized bed. Four different kinds of nonspherical particles such as oblate, prolate, cuboid, and hemisphere are considered to examine the fluidization behavior. These four nonspherical particles fluidized with the fine sphere in the gas-solid fluidized bed and recorded with a high-speed camera for post-processing. A high-speed camera is used to capture the images at 1000 fps. The particle image velocimetry (PIV) method is used to analyze the particle velocity using these images, which are generated from the high-speed camera. The consequences show that as increasing the superficial air velocity, the dynamic bed height of different mixtures varies. The velocity magnitude of the different mixtures is slightly varied but follows similar patterns. Increasing the aspect ratio of the nonspherical particle, both the segregation index and drag force reduce. Segregation index follows decreasing order of the nonspherical particles in the multicomponent mixture as oblate (SI = 0.09) > prolate (SI = 0.07) > cuboid (SI = 0.06) > hemisphere (SI = 0.03). It implies that as increasing the number of nonspherical components in the multi-component mixture, the mixing increases.