Granular flow, collisional cooling and charged grains

D.e Wolf, T Scheffler and J Schäfer

Physica A: Statistical Mechanics and its Applications, 1999, vol. 274, issue 1, 171-181

Abstract: The non-Newtonian character of granular flow in a vertical pipe is analyzed. The time evolution of the flow velocity and the velocity fluctuations (or granular temperature) is derived. The steady-state velocity has a power law dependence on the pipe width with an exponent between 3/4 and 3/2. The flow becomes faster the more efficient the collisional cooling is, provided the density remains low enough. The dependence of collisional cooling on the solid fraction, the restitution coefficient and a possible electric charge of all grains is discussed in detail.

Keywords: Granular flow; Collisional cooling; Charged grains (search for similar items in EconPapers)
Date: 1999
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:274:y:1999:i:1:p:171-181

DOI: 10.1016/S0378-4371(99)00434-3

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