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Noise Reduction and Pattern Formation in Rapid Granular Flows
https://doi.org/10.1142/S0129183198001217Cited by:7 (Source: Crossref)
Abstract
Spatial fluctuations in dissipative systems, such as rapid granular flows, behave very differently from those in elastic fluids. Fluctuations in the flow field drive the linear and nonlinear instability in the density field (clustering), while vortex structures appear and grow through the mechanism of noise reduction. The dynamics of the flow field on the largest space and time scales is described by diffusion equations with different diffusivities for the transverse and longitudinal flow fields. The results are obtained from analytic and simulation methods.
This paper was presented at the 7th Int. Conf. on the Discrete Simulation of Fluids held at the University of Oxford, 14–18 July 1998.
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