publication . Article . 2008

Stable solutions of a scalar conservation law for particle-size segregation in dense granular avalanches

M. SHEARER; J. M. N. T. GRAY; A. R. THORNTON;
Open Access English
  • Published: 01 Feb 2008
  • Country: Switzerland
Abstract
<jats:p>Dense, dry granular avalanches are very efficient at sorting the larger particles towards the free surface of the flow, and finer grains towards the base, through the combined processes of kinetic sieving and squeeze expulsion. This generates an inversely graded particle-size distribution, which is fundamental to a variety of pattern formation mechanisms, as well as subtle size-mobility feedback effects, leading to the formation of coarse-grained lateral levees that create channels in geophysical flows, enhancing their run-out. In this paper we investigate some of the properties of a recent model [Gray, J. M. N. T. &amp; Thornton, A. R. (2005) A theory f...
Subjects
free text keywords: /dk/atira/pure/subjectarea/asjc/2600, Mathematics(all), /dk/atira/pure/subjectarea/asjc/2600/2604, Applied Mathematics, Boundary value problem, Free surface, Shear flow, Mechanics, Mathematical analysis, Flow (psychology), Shock wave, Classical mechanics, Conservation law, Rarefaction, Physics, Particle size
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publication . Article . 2008

Stable solutions of a scalar conservation law for particle-size segregation in dense granular avalanches

M. SHEARER; J. M. N. T. GRAY; A. R. THORNTON;