Collisional Granular Flow as a Micropolar Fluid

Details Collisional Granular Flow as a Micropolar Fluid Collisional Granular Flow as a Micropolar Fluid

2001-08-11

arxiv.org/abs/cond-mat/0108192v3

Phys. Rev. Lett. 88, 174301 (2002)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 1 figure, typos removed

Scientific paper

10.1103/PhysRevLett.88.174301

We show that a micropolar fluid model successfully describes collisional granular flows on a slope. A micropolar fluid is the fluid with internal structures in which coupling between the spin of each particle and the macroscopic velocity field is taken into account. It is a hydrodynamical framework suitable for granular systems which consists of particles with macroscopic size. We demonstrate that the model equations can quantitatively reproduce the velocity and the angular velocity profiles obtained from the numerical simulation of the collisional granular flow on a slope using a simple estimate for the parameters in the theory.

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