稠密颗粒流中的剪切弥散
Shear dispersion in dense granular flows
摘要：
我们制定和解决一个模型问题的密集颗粒材料的分散在快速剪切流下降的倾斜。分散粉末的深度平均浓度的有效分散性示出为Péclet数的平方而变化，如在经典的泰勒-阿里斯分散的分子溶质。一般剪切剖面的扩展，并指出工业和地质颗粒流的可能应用。
英文摘要：
We formulate and solve a model problem of dispersion of dense granular materials in rapid shear flow down an incline. The effective dispersivity of the depth-averaged concentration of the dispersing powder is shown to vary as the Péclet number squared, as in classical Taylor--Aris dispersion of molecular solutes. An extensions to generic shear profiles is presented, and possible applications to industrial and geological granular flows are noted.
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