Continuum description of avalanches in granular media.

Conference · Tue Dec 05 00:00:00 EST 2000

OSTI ID:772120

Aranson, I S; Tsimring, L S

A continuum theory of partially fluidized granular flows is proposed. The theory is based on a combination of the mass and momentum conservation equations with the order parameter equation which describes the transition between flowing and static components of the granular system. We apply this model to the dynamics of avalanches in chutes. The theory provides a quantitative description of recent observations of granular flows on rough inclined planes (Daerr and Douady 1999): layer bistability, and the transition from triangular avalanches propagating downhill at small inclination angles to balloon-shaped avalanches also propagating uphill for larger angles.

• Research Organization: Argonne National Lab., IL (US)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: W-31-109-ENG-38
• OSTI ID: 772120
• Report Number(s): ANL/MSD/CP-103586; TRN: AH200118%%390
• Resource Relation: Conference: Powders and Grains International Conference on Micromechanics of Granular Media, Sedai (JP), 05/21/2001--05/25/2001; Other Information: PBD: 5 Dec 2000
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
GRANULAR MATERIALS
SOLIDS FLOW
FLUIDIZATION
MATHEMATICAL MODELS
HOPPERS