Material characteristic-controlled particle segregation in rock-ice avalanche

Y Zhu, Y Jiang, Y Liu, Q **e, X Hu, X **a - Computers and Geotechnics, 2024 - Elsevier
Rock-ice avalanches exhibit significant particle segregation driven by density and friction
differences between ice and rock. This study meticulously uncovers intricate segregation …

[HTML][HTML] Different erosion and entrainment mechanisms in snow avalanches

X Li, B Sovilla, C Ligneau, C Jiang, J Gaume - Mechanics Research …, 2022 - Elsevier
Erosion significantly affects the dynamics of gravity-driven mass flows. In snow avalanches,
the snow cover can be substantially eroded but only partially entrained, however, there are …

Scaling behavior of granular columns collapse on erodible-inclined surfaces

TT Vo, TD Minh, NHT Nguyen, TK Nguyen, TQ Bui - Powder Technology, 2024 - Elsevier
This paper explores the effects of slope angle, initial column aspect ratio, and interparticle
friction coefficient on the mobility and erodibility of granular columns collapsing on an …

A perspective of surge dynamics in natural debris flows through pulse‐Doppler radar observations

T Schöffl, G Nagl, R Koschuch… - Journal of …, 2023 - Wiley Online Library
As a consequence of their natural occurrence and the frequent formation of multiple surges
with high sediment loads, debris flows are considered one of the most hazardous gravity …

Subcritical and supercritical granular flow around an obstacle on a rough inclined plane

C Tregaskis, CG Johnson, X Cui, J Gray - Journal of Fluid Mechanics, 2022 - cambridge.org
A blunt obstacle in the path of a rapid granular avalanche generates a bow shock (a jump in
the avalanche thickness and velocity), a region of static grains upstream of the obstacle, and …

Effects of ellipsoidal shapes on sound velocity in particle systems: From spherical to elongated shapes

Y Zhu, L Bao, C Li, C Zhao - Powder Technology, 2025 - Elsevier
The study of acoustic properties within particle systems is of great significance for inverting
system structures, designing soundproofing, or sound-guiding materials. To investigate the …

Investigation on the erosion and deposition process of granular collapse flow on an erodible inclined plane

SH Chou, SJ Yang, SS Hsiau - Powder Technology, 2023 - Elsevier
The occurrence of slope disasters mainly depends on the terrain slope, size and amount of
soil and rock particles, and the presence of heavy rain. If particles erode and entrain soil and …

Revealing the physics of sediment ploughing by geophysical mass flows: Depth-averaged approach

CE Choi, M Nikooei - Computers and Geotechnics, 2023 - Elsevier
Ploughing is an erosion mechanism where the dam-like front of a geophysical flow shovels
sediments along its path to increase its runout. Ploughing is commonly reported in the field …

Towards depth-averaged modelling of the decay of granular flows by deposition

M Nikooei, CE Choi - Computers and Geotechnics, 2022 - Elsevier
Depth-averaged (DA) numerical models are often used to simulate the runout of flow-type
landslides because of their practicality and computational efficiency. However, existing DA …

On the shape and size of granular roll waves

G Kanellopoulos, D Razis… - Journal of Fluid …, 2022 - cambridge.org
This paper describes, from a theoretical point of view, the appearance and characteristics of
granular roll waves in chute flow, and the maximal size these waves can attain for a given …