Mixing of cohesive particles in a shear cell

Shu San Hsiau, Li Shin Lu, Cheng Yu Chou, Wen Lung Yang

研究成果: 會議貢獻類型會議論文同行評審


This paper discusses a series of experiments performed in a shear cell device with six different amounts of silicone oils and using 2-mm glass spheres as the granular materials. The motion of granular materials is recorded by a high-speed camera. Using the image processing technology and particle tracking method, the positions and velocities of particles are measured. The self-diffusion coefficient can be found from the history of the particle displacements. Mixing experiments are performed, and the developments of mixing layer thicknesses are measured. The measured mixing layer thicknesses are compared with the calculations from a simple diffusion equation using the data of apparent self-diffusion coefficients obtained from the current measurements. The comparisons show good agreements, demonstrating that the mixing process of granular materials occur through the diffusion mechanism in this cohesive sheared flow. In addition, the apparent self-diffusion coefficient decreases with the increasing liquid volume, indicating that cohesive forces between particles reduce granular mixing.

出版狀態已出版 - 2006
事件2006 AIChE Spring National Meeting - 5th World Congress on Particle Technology - Orlando, FL, United States
持續時間: 23 4月 200627 4月 2006


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國家/地區United States
城市Orlando, FL


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