Granular flow experiment using artificial gravity generator at International Space Station [PDF]
npj Microgravity, 2023 Studying the gravity-dependent characteristics of regolith, fine-grained granular media covering extra-terrestrial bodies is essential for the reliable design and analysis of landers and rovers for space exploration.
S. Ozaki +12 more
doaj +3 more sources
Effects of flow regimes on the interaction between granular flow and flexible barrier [PDF]
PLoS ONE, 2023 Flexible barriers are widely used to mitigate granular flows. In practice, flow regimes may keep changing along a flow path after the initiation of granular flows.
Siyou Xiao +5 more
doaj +2 more sources
Dynamic X-ray radiography reveals particle size and shape orientation fields during granular flow. [PDF]
Sci Rep, 2017 When granular materials flow, the constituent particles segregate by size and align by shape. The impacts of these changes in fabric on the flow itself are not well understood, and thus novel non-invasive means are needed to observe the interior of the ...
Guillard F, Marks B, Einav I.
europepmc +2 more sources
Well-posed continuum equations for granular flow with compressibility and μ(I)-rheology. [PDF]
Proc Math Phys Eng Sci, 2017 Continuum modelling of granular flow has been plagued with the issue of ill-posed dynamic equations for a long time. Equations for incompressible, two-dimensional flow based on the Coulomb friction law are ill-posed regardless of the deformation, whereas
Barker T +3 more
europepmc +3 more sources
Viscosity of cohesive granular flows [PDF]
Soft Matter, 2021 Cohesion affects the microstructural mechanisms of momentum transport in granular flows, yielding a phase diagram that unifies several flowing regimes.
Matthew Macaulay, Pierre Rognon
openaire +3 more sources
Three-dimensionsal granular flow continuum modeling via material point method with hyperelastic nonlocal granular fluidity [PDF]
Computer Methods in Applied Mechanics and Engineering, 2021 The accurate and efficient modeling of granular flows and their interactions with external bodies is an open research problem. Continuum methods can be used to capture complexities neglected by terramechanics models without the computational expense of ...
A. Haeri, K. Skonieczny
semanticscholar +1 more source
Effect of grain shape on the dynamics of granular materials in 2D rotating drum [PDF]
EPJ Web of Conferences, 2021 We experimentally investigate the effect of the grain shape on the flow of granular material. The grain shape is modified to highlight the effect of grain circularity on granular flow in a 2D rotating drum.
Preud’homme Nicolas +3 more
doaj +1 more source
Shuiwen dizhi gongcheng dizhi, 2021 The granular flow thickness and its evolution trend are key factors in analyses of the physical model experiments of avalanches. At present, the measurements of granular flow thickness mainly include sensor monitoring, mechanical measurement and manual ...
Yue WU +7 more
doaj +1 more source
An analysis of flow-like motion of avalanches based on physical modeling experiments
Shuiwen dizhi gongcheng dizhi, 2022 Flow-like motion is the main forms of rock avalanche emplacement, which is the foundation to reveal the dynamic mechanisms of rock avalanches. In this paper, a series of physical modeling experiments based on the Particle Image Velocimetry（PIV）analysis ...
Yanmei LONG +5 more
doaj +1 more source
Flow in an hourglass: particle friction and stiffness matter
New Journal of Physics, 2021 Granular flow out of a silo is studied experimentally and numerically. The time evolution of the discharge rate as well as the normal force (apparent weight) at the bottom of the container is monitored. We show that particle stiffness has a strong effect
Tivadar Pongó +7 more
doaj +1 more source