000014909 001__ 14909
000014909 005__ 20161115100205.0
000014909 04107 $$aeng
000014909 046__ $$k2016-08-21
000014909 100__ $$aUmbanhowar, Paul
000014909 24500 $$aControlling granular segregation patterns using unsteady flows

000014909 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014909 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014909 506__ $$arestricted
000014909 520__ $$2eng$$aUnsteady flows of granular materials are ubiquitous yet remain largely unexplored. In this research, we apply unsteady flows to strongly segregating granular materials to control the segregation pattern and enhance mixing. Unsteady flows are generated by feeding size-bidisperse granular mixtures with large size ratios onto a quasi-2D bounded heap using alternating feed rates. With this flow modulation, large particles and small particles form stratified layers, which have better average mixing than the segregated patterns generated by steady feed rates. The mechanisms of layer formation under modulated flow differs from those observed during spontaneous stratification, and are related to changes in the repose angle and flowing layer depth with varying flow rate. The thickness and length of the stratified layers can be controlled by changing the flow rates and feed cycle durations, which is potentially useful for reducing segregation in industrial processes. Funded by NSF Grant CBET-1511450.

000014909 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014909 653__ $$a

000014909 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014909 720__ $$aUmbanhowar, Paul
000014909 8560_ $$ffischerc@itam.cas.cz
000014909 8564_ $$s134271$$uhttps://invenio.itam.cas.cz/record/14909/files/TS.FS08-3.01.pdf$$yOriginal version of the author's contribution as presented on CD,  page 3365, code TS.FS08-3.01
.
000014909 962__ $$r13812
000014909 980__ $$aPAPER