Shear instabilities in granular mixtures

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Dynamical instabilities in fluid mechanics are responsible of a variety of important common phenomena, such as waves on the sea surface or Taylor vorteces in Couette flow. In granular media dynamical instabilities has just begun to be discovered. Here we show by means of molecular dynamics simulation the existence of a new dynamical instability of a granular mixture under oscillating horizontal shear, which leads to the formation of a striped pattern where the components are segregated. We investigate the properties of such a Kelvin-Helmholtz like instability and show how it is connected to pattern formation in granular flow and segregation.
Phys. Rev. Lett. 94, 188001

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Soft Condensed Matter, Disordered Systems and Neural Networks, Statistical Mechanics

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http://salesiana.dossiersoluciones.com/handle/123456789/94679

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0411521
 http://arxiv.org/abs/cond-mat/0411521

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arXiv