000014899 001__ 14899
000014899 005__ 20161115100205.0
000014899 04107 $$aeng
000014899 046__ $$k2016-08-21
000014899 100__ $$aDeGiuli, Eric
000014899 24500 $$aA Phase Diagram Unifies Energy Dissipation, Kinetics, and Rheology in Inertial Granular Flows (INVITED)

000014899 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014899 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014899 506__ $$arestricted
000014899 520__ $$2eng$$aFlows of hard granular materials depend strongly on the interparticle friction coefficient µp and on the inertial number I, which characterizes proximity to the jamming transition where flow stops. Guided by numerical simulations, we derive the phase diagram of dense inertial flow of spherical particles, finding three regimes for 10−4 ! I ! 0.1: frictionless, frictional sliding, and rolling. These are distinguished by the dominant means of energy dissipation, changing from collisional to sliding friction, and back to collisional, as µp increases from zero at constant I. The three regimes differ in their kinetics and rheology; in particular, the velocity fluctuations and the stress anisotropy both display non-monotonic behavior with µp , corresponding to transitions between the three regimes of flow. We characterize the scaling properties of these regimes, show that energy balance yields scaling relations for each of them, and explain why friction qualitatively affects flow.

000014899 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014899 653__ $$a

000014899 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014899 720__ $$aDeGiuli, Eric
000014899 8560_ $$ffischerc@itam.cas.cz
000014899 8564_ $$s94410$$uhttps://invenio.itam.cas.cz/record/14899/files/TS.FS08-1.03.pdf$$yOriginal version of the author's contribution as presented on CD,  page 3345, code TS.FS08-1.03
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000014899 962__ $$r13812
000014899 980__ $$aPAPER