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- Title
How nano-scale roughness impacts the flow of grains influenced by capillary cohesion.
- Authors
LaMarche, Casey Q.; Miller, Andrew W.; Liu, Peiyuan; Leadley, Stuart; Hrenya, Christine M.
- Abstract
Significance We show that nano-scale changes in surface roughness affect the macro-scale (many-particle) behavior of granular materials influenced by cohesion. Macro-scale effects of roughness are investigated for conditions where cohesion is dominated by either humidity-induced or van der Waals-induced forces. Surface-topography measurements are used to calculate the relevant interparticle cohesive forces. The (force-dominated) macro-scale cohesion measurements are explained via the ratio of the predicted interparticle cohesive force to gravity, thus reinforcing the importance of roughness to cohesion. © 2017 American Institute of Chemical Engineers AIChE J, 63: 5250-5257, 2017
- Subjects
SURFACE roughness; GRAIN; CAPILLARY flow; FLUID dynamics of granular materials; COHESION
- Publication
AIChE Journal, 2017, Vol 63, Issue 12, p5250
- ISSN
0001-1541
- Publication type
Article
- DOI
10.1002/aic.15830