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Indexed by:期刊论文

Date of Publication:2009-03-01

Journal:PARTICULATE SCIENCE AND TECHNOLOGY

Included Journals:SCIE、EI

Volume:27

Issue:2

Page Number:126-138

ISSN No.:0272-6351

Key Words:discrete element method; energy conservation; granular materials; nonequilibrium steady state; quasi-solid-liquid transition

Abstract:Energy conservation and the quasi-solid-liquid transition are studied for a nonuniform granular shear flow in nonequilibrium steady state using 3-D discrete element simulation. Energy fluctuation and its relation to interparticle force chains are discussed. Sensitivity analyses are carried out of energy to different parameters, such as concentration, restitution coefficient, and friction coefficient. Elastic potential energy distribution in the quasi-solid-liquid transition is discussed, and the inherent fundamental mechanisms of transition from the perspective of energy are developed.