Projects per year
Abstract
Recent advances in shear-thickening suspension rheology suggest a relation between (wet) suspension flow below jamming and (dry) granular physics. To probe this connection, we simulated the contact force networks in suspensions of non-Brownian spheres using the discrete element method (DEM), varying the particle friction coefficient and volume fraction. We find that force networks in these suspensions show quantitative similarities to those in jammed dry grains. As suspensions approach the jamming point, the extrapolated volume fraction and coordination number at jamming are similar to critical values obtained for isotropically compressed spheres. Similarly, the shape of the distribution of contact forces in flowing suspensions is remark- ably similar to that found in granular packings, suggesting potential refinements for analytical mean field models for the rheology of shear thickening suspensions.
Original language | English |
---|---|
Article number | 29 |
Journal | Granular Matter |
Volume | 22 |
Early online date | 27 Jan 2020 |
DOIs | |
Publication status | E-pub ahead of print - 27 Jan 2020 |
Fingerprint
Dive into the research topics of 'Force chains and networks: wet suspensions through dry granular eyes'. Together they form a unique fingerprint.Projects
- 3 Finished
-
4D printing using programmable soft materials: from rheology to technology
Sun, J. (Principal Investigator)
1/08/17 → 31/07/18
Project: Research
-
Predictive formulation of high-solid-content complex dispersions
Sun, J. (Principal Investigator)
1/09/16 → 24/07/20
Project: Research
-
Predictive formulation of high-solid-content complex dispersions
Poon, W. (Principal Investigator)
1/09/16 → 24/07/20
Project: Research
Datasets
-
Force chains and networks: wet suspensions through dry granular eyes
Poon, W. (Creator), Sun, J. (Creator), Royer, J. (Creator) & Radhakrishnan, R. (Creator), Edinburgh DataShare, 1 Nov 2019
DOI: 10.7488/ds/2614, https://arxiv.org/abs/1904.03144
Dataset