Simple interaction model for partiallywet granular materials

Namiko Mitarai, Hiizu Nakanishi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

It is well known that just adding some liquid to dry granular materials changes their behaviors very much. Liquid forms bridges between grains, and the bridge induces cohesion between grains due to the surface tension. When the liquid content is small, the liquid forms a bridge at each contact point (the pendular state), which induces two-body cohesive force. As the liquid content increases, some liquid bridges merge, and more than two grains interact through a single liquid cluster (the funicular state).We propose a simple phenomenological model for wet granular media to take into account many particle interaction through a liquid cluster in the funicular state as well as two-body cohesive force by a liquid bridge in the pendular state. In our model, the cohesive force acts among the grains connected by a liquid-gas interface. As the liquid content is increased, the number of grains that interact through the liquid increase, but the liquid-gas interface may decrease when liquid clusters are formed. Due to this competition, the shear stress shows a maximum as a function of the liquid-content.

Original languageEnglish
Title of host publicationIUTAM-ISIMM Symposium on Mathematical Modeling and Physical Instances of Granular Flows
Pages214-220
Number of pages7
Volume1227
DOIs
Publication statusPublished - Jul 20 2010
EventJoint IUTAM-ISIMM Symposium on Mathematical Modeling and Physical Instances of Granular Flows - Reggio Calabria, Italy
Duration: Sep 14 2009Sep 18 2009

Other

OtherJoint IUTAM-ISIMM Symposium on Mathematical Modeling and Physical Instances of Granular Flows
Country/TerritoryItaly
CityReggio Calabria
Period9/14/099/18/09

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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