Coupling rheology and segregation in granular flows

T Barker, M Rauter, ESF Maguire… - Journal of Fluid …, 2021‏ - cambridge.org
During the last fifteen years there has been a paradigm shift in the continuum modelling of
granular materials; most notably with the development of rheological models, such as the …

River-bed armouring as a granular segregation phenomenon

B Ferdowsi, CP Ortiz, M Houssais… - Nature …, 2017‏ - nature.com
River bed-load transport is a kind of dense granular flow, and such flows are known to
segregate grains. While gravel-river beds typically have an “armoured” layer of coarse …

Micromechanical origin of particle size segregation

L **g, CY Kwok, YF Leung - Physical review letters, 2017‏ - APS
We computationally study the micromechanics of shear-induced size segregation and
propose distinct migration mechanisms for individual large and small particles. While small …

Particle size segregation in granular mass flows with different ambient fluids

GGD Zhou, KFE Cui, L **g, T Zhao… - Journal of …, 2020‏ - Wiley Online Library
Size segregation, which is a robust feature of sheared granular mixtures and geophysical
mass flow deposits, is found to diminish in the presence of a viscous fluid. We study this …

How ice particles increase mobility of rock‐ice avalanches: Insights from chute flows simulation of granular rock‐ice mixtures by discrete element method

Z Feng, X Fan, T Ni, Y Deng, C Zou… - Journal of …, 2023‏ - Wiley Online Library
Rock‐ice avalanches occurring in cold high‐mountain regions often cause catastrophic
damages due to their extremely high mobility. Rock and ice have different physical …

A hydrodynamic-plastic formulation for modelling sand using a minimal set of parameters

E Alaei, B Marks, I Einav - Journal of the Mechanics and Physics of Solids, 2021‏ - Elsevier
Conventional plasticity models follow rich mathematical formulations. However, they
typically lack a physical basis, so their predictive quality is strongly correlated with the …

Size segregation of irregular granular materials captured by time-resolved 3D imaging

P Gajjar, CG Johnson, J Carr, K Chrispeels, J Gray… - Scientific Reports, 2021‏ - nature.com
When opening a box of mixed nuts, a common experience is to find the largest nuts at the
top. This well-known effect is the result of size-segregation where differently sized 'particles' …

Comparing and contrasting size-based particle segregation models: Applying coarse-graining to perfectly bidisperse systems

DR Tunuguntla, T Weinhart, AR Thornton - Computational Particle …, 2017‏ - Springer
Over the last 12 years, numerous new theoretical continuum models have been formulated
to predict particle segregation in the size-based bidisperse granular flows over inclined …

Viscous effects on the particle size segregation in geophysical mass flows: Insights from immersed granular shear flow simulations

KFE Cui, GGD Zhou, L **g - Journal of Geophysical Research …, 2021‏ - Wiley Online Library
Size segregation is a common feature in geophysical mass flow deposits and is an active
process during motion. The presence of interstitial fluids in such flows affect the motion of …

Characteristics of the impact pressure of debris flows

H Zheng, Z Shi, T de Haas, D Shen… - Journal of …, 2022‏ - Wiley Online Library
Debris flows are common geological hazards in mountainous regions worldwide. Predicting
the impact pressure of debris flows is of major importance for hazard mitigation. Here, we …