Structural changes in wet granular matter due to drainage

Journal article
(Original article)


Publication Details

Author(s): Nair P, Pöschel T
Journal: EPJ Web of Conferences
Publication year: 2017
Volume: 140
ISSN: 2100-014X
Language: English


Abstract


Unsaturated wet granular media are usually modelled using force laws based on analytical and empirical results of liquid bridge forces between pairs of grains. These models make ad-hoc assumptions on the liquid volume present in the bridges and its distribution. The force between grains and rupture criterion of the bridge are a function of this assumed volume of liquid, in addition to other parameters like contact angle of the liquid, geometry of the grains and the inter grain distance. To study the initial volume and morphology of liquid bridges, hydrodynamic simulation of dynamic effects leading to formation of liquid bridges at grain scale are indispensable. We use a Smoothed Particle Hydrodynamics algorithm to simulate the hydrodynamics of the evolution of the free surface using a novel freesurface-capillary model, inspired by the molecular basis of surface tension. We present validations for the model and simulations of formation and rupture of liquid bridges.



FAU Authors / FAU Editors

Nair, Prapanch
Lehrstuhl für Multiscale Simulation of Particulate Systems
Pöschel, Thorsten Prof. Dr.
Lehrstuhl für Multiscale Simulation of Particulate Systems


How to cite

APA:
Nair, P., & Pöschel, T. (2017). Structural changes in wet granular matter due to drainage. EPJ Web of Conferences, 140. https://dx.doi.org/10.1051/epjconf/201714009005

MLA:
Nair, Prapanch, and Thorsten Pöschel. "Structural changes in wet granular matter due to drainage." EPJ Web of Conferences 140 (2017).

BibTeX: 

Last updated on 2018-10-09 at 14:10